HiFi Tube Preamp Simple DIY Version
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=7UBhY-fVkc4
As promised, we are exploring more tube preamps! This is a project I am excited about as this is something a lot of folks have asked about: a simple easy to build tube pre-amp. • This simple circuit has gotten a lot of praise, I'm a fan of simple audio gear so I'm going to throw this together and compare it to the winner of our shoot out, stay tuned!","styleRuns":[{"startIndex":0,"length":352,"styleRunExtensions":{"styleRunColorMapExtension":{"colorMap":[{"key":"USER_INTERFACE_THEME_DARK","value":4294967295},{"key":"USER_INTERFACE_THEME_LIGHT","value":4279440147}]}},"fontFamilyName":"Roboto"}]},"headerRuns":[{"startIndex":0,"length":352,"headerMapping":"ATTRIBUTED_STRING_HEADER_MAPPING_UNSPECIFIED"}]}},{"itemSectionRenderer":{"contents":[{"continuationItemRenderer":{"trigger":"CONTINUATION_TRIGGER_ON_ITEM_SHOWN","continuationEndpoint":{"clickTrackingParams":"CMcBELsvGAIiEwjO1JCfgOeLAxURxEIFHQd4EQE=","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/next"}},"continuationCommand":{"token":"Eg0SCzdVQmhZLWZWa2M0GAYyJSIRIgs3VUJoWS1mVmtjNDAAeAJCEGNvbW1lbnRzLXNlY3Rpb24%3D","request":"CONTINUATION_REQUEST_TYPE_WATCH_NEXT"}}}}],"trackingParams":"CMcBELsvGAIiEwjO1JCfgOeLAxURxEIFHQd4EQE=","sectionIdentifier":"comment-item-section","targetId":"comments-section"}}],"trackingParams":"CMYBELovIhMIztSQn4DniwMVEcRCBR0HeBEB"}},"secondaryResults":{"secondaryResults":{"results":[{"compactVideoRenderer":{"videoId":"9LVVyzgnpmA","thumbnail":{"thumbnails":[{"url":"https://i.ytimg.com/vi/9LVVyzgnpmA/hqdefault.jpg?sqp=-oaymwE1CKgBEF5IVfKriqkDKAgBFQAAiEIYAXABwAEG8AEB-AHUBoAC4AOKAgwIABABGGUgWChGMA8= rs=AOn4CLDqh5UPSS6gqEI_H-M291GI-HWEog","width":168,"height":94},{"url":"https://i.ytimg.com/vi/9LVVyzgnpmA/hqdefault.jpg?sqp=-oaymwE2CNACELwBSFXyq4qpAygIARUAAIhCGAFwAcABBvABAfgB1AaAAuADigIMCAAQARhlIFgoRjAP rs=AOn4CLCQo_7dCmEwrgQmgqYCCn9dQXNSDA","width":336,"height":188}]},"title":{"accessibility":{"accessibilityData":{"label":"HiFi Tube Pre-amp: Final Three Shootout! by Skunkie Designs Electronics 57,653 views 3 years ago 39 minutes"}},"simpleText":"HiFi Tube Pre-amp: Final Three Shootout!"},"longBylineText":{"runs":[{"text":"Skunkie Designs Electronics","navigationEndpoint":{"clickTrackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@SkunkieDesignsElectronics","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC3tTF80zeW_HDmfsLt-u-8Q","canonicalBaseUrl":"/@SkunkieDesignsElectronics"}}}]},"publishedTimeText":{"simpleText":"3 years ago"},"viewCountText":{"simpleText":"57,653 views"},"lengthText":{"accessibility":{"accessibilityData":{"label":"39 minutes, 29 seconds"}},"simpleText":"39:29"},"navigationEndpoint":{"clickTrackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWRIzqPWvr6smKDtAZoBBQgBEPgd","commandMetadata":{"webCommandMetadata":{"url":"/watch?v=9LVVyzgnpmA","webPageType":"WEB_PAGE_TYPE_WATCH","rootVe":3832}},"watchEndpoint":{"videoId":"9LVVyzgnpmA","nofollow":true,"watchEndpointSupportedOnesieConfig":{"html5PlaybackOnesieConfig":{"commonConfig":{"url":"https://rr2---sn-nvm-cxb6.googlevideo.com/initplayback?source=youtube oeis=1 c=WEB oad=3200 ovd=3200 oaad=11000 oavd=11000 ocs=700 oewis=1 oputc=1 ofpcc=1 msp=1 odepv=1 id=f4b555cb3827a660 ip=2a02%3A27aa%3A0%3A0%3A0%3A0%3A0%3Ad49 initcwndbps=898750 mt=1740767109 oweuc= pxtags=Cg4KAnR4Egg1MTM5MzE2MQ rxtags=Cg4KAnR4Egg1MTM5MzE2MA%2CCg4KAnR4Egg1MTM5MzE2MQ%2CCg4KAnR4Egg1MTM5MzE2Mg%2CCg4KAnR4Egg1MTM5MzE2Mw%2CCg4KAnR4Egg1MTM5MzE2NA"}}}}},"shortBylineText":{"runs":[{"text":"Skunkie Designs Electronics","navigationEndpoint":{"clickTrackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@SkunkieDesignsElectronics","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC3tTF80zeW_HDmfsLt-u-8Q","canonicalBaseUrl":"/@SkunkieDesignsElectronics"}}}]},"channelThumbnail":{"thumbnails":[{"url":"https://yt3.ggpht.com/Wso9xRdYwXAov5BNvNcUvg3B7_mB-ysh9wCnIIgY2vW7m7swuVc71TVGC1W7-IA1_Wo1sEwryKY=s68-c-k-c0x00ffffff-no-rj","width":68,"height":68}]},"trackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQFA4MyewbO51dr0AQ==","shortViewCountText":{"accessibility":{"accessibilityData":{"label":"57K views"}},"simpleText":"57K views"},"menu":{"menuRenderer":{"items":[{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Add to queue"}]},"icon":{"iconType":"ADD_TO_QUEUE_TAIL"},"serviceEndpoint":{"clickTrackingParams":"CMQBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CMQBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"9LVVyzgnpmA","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CMQBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["9LVVyzgnpmA"],"params":"CAQ%3D"}},"videoIds":["9LVVyzgnpmA"]}},{"clickTrackingParams":"CMQBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","openPopupAction":{"popup":{"notificationActionRenderer":{"responseText":{"simpleText":"Added to queue"},"trackingParams":"CMUBELlqIhMIztSQn4DniwMVEcRCBR0HeBEB"}},"popupType":"TOAST"}}]}},"trackingParams":"CMQBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemDownloadRenderer":{"serviceEndpoint":{"clickTrackingParams":"CMMBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","offlineVideoEndpoint":{"videoId":"9LVVyzgnpmA","onAddCommand":{"clickTrackingParams":"CMMBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","getDownloadActionCommand":{"videoId":"9LVVyzgnpmA","params":"CAIQAA%3D%3D"}}}},"trackingParams":"CMMBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Share"}]},"icon":{"iconType":"SHARE"},"serviceEndpoint":{"clickTrackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQE=","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/share/get_share_panel"}},"shareEntityServiceEndpoint":{"serializedShareEntity":"Cgs5TFZWeXpnbnBtQQ%3D%3D","commands":[{"clickTrackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQE=","openPopupAction":{"popup":{"unifiedSharePanelRenderer":{"trackingParams":"CMIBEI5iIhMIztSQn4DniwMVEcRCBR0HeBEB","showLoadingSpinner":true}},"popupType":"DIALOG","beReused":true}}]}},"trackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQE=","hasSeparator":true}}],"trackingParams":"CL8BEKQwGAAiEwjO1JCfgOeLAxURxEIFHQd4EQE=","accessibility":{"accessibilityData":{"label":"Action menu"}},"targetId":"watch-related-menu-button"}},"thumbnailOverlays":[{"thumbnailOverlayTimeStatusRenderer":{"text":{"accessibility":{"accessibilityData":{"label":"39 minutes, 29 seconds"}},"simpleText":"39:29"},"style":"DEFAULT"}},{"thumbnailOverlayToggleButtonRenderer":{"isToggled":false,"untoggledIcon":{"iconType":"WATCH_LATER"},"toggledIcon":{"iconType":"CHECK"},"untoggledTooltip":"Watch later","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CMEBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"addedVideoId":"9LVVyzgnpmA","action":"ACTION_ADD_VIDEO"}]}},"toggledServiceEndpoint":{"clickTrackingParams":"CMEBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"action":"ACTION_REMOVE_VIDEO_BY_VIDEO_ID","removedVideoId":"9LVVyzgnpmA"}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Watch later"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CMEBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayToggleButtonRenderer":{"untoggledIcon":{"iconType":"ADD_TO_QUEUE_TAIL"},"toggledIcon":{"iconType":"PLAYLIST_ADD_CHECK"},"untoggledTooltip":"Add to queue","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CMABEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CMABEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"9LVVyzgnpmA","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CMABEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["9LVVyzgnpmA"],"params":"CAQ%3D"}},"videoIds":["9LVVyzgnpmA"]}}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Add to queue"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CMABEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayNowPlayingRenderer":{"text":{"runs":[{"text":"Now playing"}]}}}],"accessibility":{"accessibilityData":{"label":"HiFi Tube Pre-amp: Final Three Shootout! - 39 minutes - Go to channel - Skunkie Designs Electronics - 57K views - 3 years ago - play video"}},"richThumbnail":{"movingThumbnailRenderer":{"movingThumbnailDetails":{"thumbnails":[{"url":"https://i.ytimg.com/an_webp/9LVVyzgnpmA/mqdefault_6s.webp?du=3000 sqp=CIDfh74G rs=AOn4CLAXcuOvomFepO1n8kDssWWlMXiM8Q","width":320,"height":180}],"logAsMovingThumbnail":true},"enableHoveredLogging":true,"enableOverlay":true}}}},{"compactVideoRenderer":{"videoId":"Myf9TkF8FX8","thumbnail":{"thumbnails":[{"url":"https://i.ytimg.com/vi/Myf9TkF8FX8/hqdefault.jpg?sqp=-oaymwE1CKgBEF5IVfKriqkDKAgBFQAAiEIYAXABwAEG8AEB-AH-CYAC0AWKAgwIABABGGUgVShLMA8= rs=AOn4CLAIvmN-hDu2rE_FscWv3SSoM1mayQ","width":168,"height":94},{"url":"https://i.ytimg.com/vi/Myf9TkF8FX8/hqdefault.jpg?sqp=-oaymwE2CNACELwBSFXyq4qpAygIARUAAIhCGAFwAcABBvABAfgB_gmAAtAFigIMCAAQARhlIFUoSzAP rs=AOn4CLACjw-0m_2k7Walerl4dD7Jqw9IPA","width":336,"height":188}]},"title":{"accessibility":{"accessibilityData":{"label":"HiFi Tube Pre-amp: Wiring the Power Supply by Skunkie Designs Electronics 10,977 views 3 years ago 11 minutes, 28 seconds"}},"simpleText":"HiFi Tube Pre-amp: Wiring the Power Supply"},"longBylineText":{"runs":[{"text":"Skunkie Designs Electronics","navigationEndpoint":{"clickTrackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@SkunkieDesignsElectronics","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC3tTF80zeW_HDmfsLt-u-8Q","canonicalBaseUrl":"/@SkunkieDesignsElectronics"}}}]},"publishedTimeText":{"simpleText":"3 years ago"},"viewCountText":{"simpleText":"10,977 views"},"lengthText":{"accessibility":{"accessibilityData":{"label":"11 minutes, 28 seconds"}},"simpleText":"11:28"},"navigationEndpoint":{"clickTrackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWRIzqPWvr6smKDtAZoBBQgBEPgd","commandMetadata":{"webCommandMetadata":{"url":"/watch?v=Myf9TkF8FX8","webPageType":"WEB_PAGE_TYPE_WATCH","rootVe":3832}},"watchEndpoint":{"videoId":"Myf9TkF8FX8","nofollow":true,"watchEndpointSupportedOnesieConfig":{"html5PlaybackOnesieConfig":{"commonConfig":{"url":"https://rr1---sn-uxaxiv0nxx5q-nv4l.googlevideo.com/initplayback?source=youtube oeis=1 c=WEB oad=3200 ovd=3200 oaad=11000 oavd=11000 ocs=700 oewis=1 oputc=1 ofpcc=1 msp=1 odepv=1 id=3327fd4e417c157f ip=2a02%3A27aa%3A0%3A0%3A0%3A0%3A0%3Ad49 initcwndbps=1247500 mt=1740767109 oweuc= pxtags=Cg4KAnR4Egg1MTM5MzE2MQ rxtags=Cg4KAnR4Egg1MTM5MzE2MA%2CCg4KAnR4Egg1MTM5MzE2MQ%2CCg4KAnR4Egg1MTM5MzE2Mg%2CCg4KAnR4Egg1MTM5MzE2Mw%2CCg4KAnR4Egg1MTM5MzE2NA"}}}}},"shortBylineText":{"runs":[{"text":"Skunkie Designs Electronics","navigationEndpoint":{"clickTrackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@SkunkieDesignsElectronics","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC3tTF80zeW_HDmfsLt-u-8Q","canonicalBaseUrl":"/@SkunkieDesignsElectronics"}}}]},"channelThumbnail":{"thumbnails":[{"url":"https://yt3.ggpht.com/Wso9xRdYwXAov5BNvNcUvg3B7_mB-ysh9wCnIIgY2vW7m7swuVc71TVGC1W7-IA1_Wo1sEwryKY=s68-c-k-c0x00ffffff-no-rj","width":68,"height":68}]},"trackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQFA_6rwi-Sp_5Mz","shortViewCountText":{"accessibility":{"accessibilityData":{"label":"10K views"}},"simpleText":"10K views"},"menu":{"menuRenderer":{"items":[{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Add to queue"}]},"icon":{"iconType":"ADD_TO_QUEUE_TAIL"},"serviceEndpoint":{"clickTrackingParams":"CL0BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CL0BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"Myf9TkF8FX8","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CL0BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["Myf9TkF8FX8"],"params":"CAQ%3D"}},"videoIds":["Myf9TkF8FX8"]}},{"clickTrackingParams":"CL0BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","openPopupAction":{"popup":{"notificationActionRenderer":{"responseText":{"simpleText":"Added to queue"},"trackingParams":"CL4BELlqIhMIztSQn4DniwMVEcRCBR0HeBEB"}},"popupType":"TOAST"}}]}},"trackingParams":"CL0BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemDownloadRenderer":{"serviceEndpoint":{"clickTrackingParams":"CLwBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","offlineVideoEndpoint":{"videoId":"Myf9TkF8FX8","onAddCommand":{"clickTrackingParams":"CLwBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","getDownloadActionCommand":{"videoId":"Myf9TkF8FX8","params":"CAIQAA%3D%3D"}}}},"trackingParams":"CLwBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Share"}]},"icon":{"iconType":"SHARE"},"serviceEndpoint":{"clickTrackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQE=","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/share/get_share_panel"}},"shareEntityServiceEndpoint":{"serializedShareEntity":"CgtNeWY5VGtGOEZYOA%3D%3D","commands":[{"clickTrackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQE=","openPopupAction":{"popup":{"unifiedSharePanelRenderer":{"trackingParams":"CLsBEI5iIhMIztSQn4DniwMVEcRCBR0HeBEB","showLoadingSpinner":true}},"popupType":"DIALOG","beReused":true}}]}},"trackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQE=","hasSeparator":true}}],"trackingParams":"CLgBEKQwGAEiEwjO1JCfgOeLAxURxEIFHQd4EQE=","accessibility":{"accessibilityData":{"label":"Action menu"}}}},"thumbnailOverlays":[{"thumbnailOverlayTimeStatusRenderer":{"text":{"accessibility":{"accessibilityData":{"label":"11 minutes, 28 seconds"}},"simpleText":"11:28"},"style":"DEFAULT"}},{"thumbnailOverlayToggleButtonRenderer":{"isToggled":false,"untoggledIcon":{"iconType":"WATCH_LATER"},"toggledIcon":{"iconType":"CHECK"},"untoggledTooltip":"Watch later","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CLoBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"addedVideoId":"Myf9TkF8FX8","action":"ACTION_ADD_VIDEO"}]}},"toggledServiceEndpoint":{"clickTrackingParams":"CLoBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"action":"ACTION_REMOVE_VIDEO_BY_VIDEO_ID","removedVideoId":"Myf9TkF8FX8"}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Watch later"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CLoBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayToggleButtonRenderer":{"untoggledIcon":{"iconType":"ADD_TO_QUEUE_TAIL"},"toggledIcon":{"iconType":"PLAYLIST_ADD_CHECK"},"untoggledTooltip":"Add to queue","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CLkBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CLkBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"Myf9TkF8FX8","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CLkBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["Myf9TkF8FX8"],"params":"CAQ%3D"}},"videoIds":["Myf9TkF8FX8"]}}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Add to queue"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CLkBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayNowPlayingRenderer":{"text":{"runs":[{"text":"Now playing"}]}}}],"accessibility":{"accessibilityData":{"label":"HiFi Tube Pre-amp: Wiring the Power Supply - 11 minutes, 28 seconds - Go to channel - Skunkie Designs Electronics - 10K views - 3 years ago - play video"}},"richThumbnail":{"movingThumbnailRenderer":{"movingThumbnailDetails":{"thumbnails":[{"url":"https://i.ytimg.com/an_webp/Myf9TkF8FX8/mqdefault_6s.webp?du=3000 sqp=CI7fh74G rs=AOn4CLDH49uPP3FLT2Zhu7REF0zJEggT5w","width":320,"height":180}],"logAsMovingThumbnail":true},"enableHoveredLogging":true,"enableOverlay":true}}}},{"compactVideoRenderer":{"videoId":"d0I0SGOYBM0","thumbnail":{"thumbnails":[{"url":"https://i.ytimg.com/vi/d0I0SGOYBM0/hqdefault.jpg?sqp=-oaymwEbCKgBEF5IVfKriqkDDggBFQAAiEIYAXABwAEG rs=AOn4CLAjic7u0t9Y7IGdS5qWqt5-fTt_5Q","width":168,"height":94},{"url":"https://i.ytimg.com/vi/d0I0SGOYBM0/hqdefault.jpg?sqp=-oaymwEcCNACELwBSFXyq4qpAw4IARUAAIhCGAFwAcABBg== rs=AOn4CLBLAAi-vu2nssG9S66BAvrHoUE8eA","width":336,"height":188}]},"title":{"accessibility":{"accessibilityData":{"label":"I built the Tiniest DIY Guitar Tube Amplifier! by Kris Slyka 78,255 views 3 years ago 12 minutes, 14 seconds"}},"simpleText":"I built the Tiniest DIY Guitar Tube Amplifier!"},"longBylineText":{"runs":[{"text":"Kris Slyka","navigationEndpoint":{"clickTrackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@KrisSlyka","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC-Uew4ye2u7H6wdxXlMe1rA","canonicalBaseUrl":"/@KrisSlyka"}}}]},"publishedTimeText":{"simpleText":"3 years ago"},"viewCountText":{"simpleText":"78,255 views"},"lengthText":{"accessibility":{"accessibilityData":{"label":"12 minutes, 14 seconds"}},"simpleText":"12:14"},"navigationEndpoint":{"clickTrackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWRIzqPWvr6smKDtAZoBBQgBEPgd","commandMetadata":{"webCommandMetadata":{"url":"/watch?v=d0I0SGOYBM0","webPageType":"WEB_PAGE_TYPE_WATCH","rootVe":3832}},"watchEndpoint":{"videoId":"d0I0SGOYBM0","nofollow":true,"watchEndpointSupportedOnesieConfig":{"html5PlaybackOnesieConfig":{"commonConfig":{"url":"https://rr3---sn-uxaxiv0nxx5q-nv4l.googlevideo.com/initplayback?source=youtube oeis=1 c=WEB oad=3200 ovd=3200 oaad=11000 oavd=11000 ocs=700 oewis=1 oputc=1 ofpcc=1 msp=1 odepv=1 id=77423448639804cd ip=2a02%3A27aa%3A0%3A0%3A0%3A0%3A0%3Ad49 initcwndbps=1247500 mt=1740767109 oweuc= pxtags=Cg4KAnR4Egg1MTM5MzE2MQ rxtags=Cg4KAnR4Egg1MTM5MzE2MA%2CCg4KAnR4Egg1MTM5MzE2MQ%2CCg4KAnR4Egg1MTM5MzE2Mg%2CCg4KAnR4Egg1MTM5MzE2Mw%2CCg4KAnR4Egg1MTM5MzE2NA"}}}}},"shortBylineText":{"runs":[{"text":"Kris Slyka","navigationEndpoint":{"clickTrackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@KrisSlyka","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC-Uew4ye2u7H6wdxXlMe1rA","canonicalBaseUrl":"/@KrisSlyka"}}}]},"channelThumbnail":{"thumbnails":[{"url":"https://yt3.ggpht.com/Y8gJxwsOI_xzxLHUXs0twXnYGSEhfHGupLTUfyzbdxDjaa4t7oJvqvyjwIk75PM3XWXPJG3YFw=s68-c-k-c0x00ffffff-no-rj","width":68,"height":68}]},"trackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQFAzYngnIaJjaF3","shortViewCountText":{"accessibility":{"accessibilityData":{"label":"78K views"}},"simpleText":"78K views"},"menu":{"menuRenderer":{"items":[{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Add to queue"}]},"icon":{"iconType":"ADD_TO_QUEUE_TAIL"},"serviceEndpoint":{"clickTrackingParams":"CLYBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CLYBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"d0I0SGOYBM0","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CLYBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["d0I0SGOYBM0"],"params":"CAQ%3D"}},"videoIds":["d0I0SGOYBM0"]}},{"clickTrackingParams":"CLYBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","openPopupAction":{"popup":{"notificationActionRenderer":{"responseText":{"simpleText":"Added to queue"},"trackingParams":"CLcBELlqIhMIztSQn4DniwMVEcRCBR0HeBEB"}},"popupType":"TOAST"}}]}},"trackingParams":"CLYBEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemDownloadRenderer":{"serviceEndpoint":{"clickTrackingParams":"CLUBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","offlineVideoEndpoint":{"videoId":"d0I0SGOYBM0","onAddCommand":{"clickTrackingParams":"CLUBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","getDownloadActionCommand":{"videoId":"d0I0SGOYBM0","params":"CAIQAA%3D%3D"}}}},"trackingParams":"CLUBENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Share"}]},"icon":{"iconType":"SHARE"},"serviceEndpoint":{"clickTrackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQE=","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/share/get_share_panel"}},"shareEntityServiceEndpoint":{"serializedShareEntity":"CgtkMEkwU0dPWUJNMA%3D%3D","commands":[{"clickTrackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQE=","openPopupAction":{"popup":{"unifiedSharePanelRenderer":{"trackingParams":"CLQBEI5iIhMIztSQn4DniwMVEcRCBR0HeBEB","showLoadingSpinner":true}},"popupType":"DIALOG","beReused":true}}]}},"trackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQE=","hasSeparator":true}}],"trackingParams":"CLEBEKQwGAIiEwjO1JCfgOeLAxURxEIFHQd4EQE=","accessibility":{"accessibilityData":{"label":"Action menu"}}}},"thumbnailOverlays":[{"thumbnailOverlayTimeStatusRenderer":{"text":{"accessibility":{"accessibilityData":{"label":"12 minutes, 14 seconds"}},"simpleText":"12:14"},"style":"DEFAULT"}},{"thumbnailOverlayToggleButtonRenderer":{"isToggled":false,"untoggledIcon":{"iconType":"WATCH_LATER"},"toggledIcon":{"iconType":"CHECK"},"untoggledTooltip":"Watch later","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CLMBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"addedVideoId":"d0I0SGOYBM0","action":"ACTION_ADD_VIDEO"}]}},"toggledServiceEndpoint":{"clickTrackingParams":"CLMBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"action":"ACTION_REMOVE_VIDEO_BY_VIDEO_ID","removedVideoId":"d0I0SGOYBM0"}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Watch later"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CLMBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayToggleButtonRenderer":{"untoggledIcon":{"iconType":"ADD_TO_QUEUE_TAIL"},"toggledIcon":{"iconType":"PLAYLIST_ADD_CHECK"},"untoggledTooltip":"Add to queue","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CLIBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CLIBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"d0I0SGOYBM0","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CLIBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["d0I0SGOYBM0"],"params":"CAQ%3D"}},"videoIds":["d0I0SGOYBM0"]}}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Add to queue"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CLIBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayNowPlayingRenderer":{"text":{"runs":[{"text":"Now playing"}]}}}],"accessibility":{"accessibilityData":{"label":"I built the Tiniest DIY Guitar Tube Amplifier! - 12 minutes, 14 seconds - Go to channel - Kris Slyka - 78K views - 3 years ago - play video"}},"richThumbnail":{"movingThumbnailRenderer":{"movingThumbnailDetails":{"thumbnails":[{"url":"https://i.ytimg.com/an_webp/d0I0SGOYBM0/mqdefault_6s.webp?du=3000 sqp=CIH_h74G rs=AOn4CLC5ypODF7G9ltzCEifYYvnml7gEqw","width":320,"height":180}],"logAsMovingThumbnail":true},"enableHoveredLogging":true,"enableOverlay":true}}}},{"compactVideoRenderer":{"videoId":"Hqoxa1XjlJw","thumbnail":{"thumbnails":[{"url":"https://i.ytimg.com/vi/Hqoxa1XjlJw/hqdefault.jpg?sqp=-oaymwE1CKgBEF5IVfKriqkDKAgBFQAAiEIYAXABwAEG8AEB-AHUBoAC4AOKAgwIABABGGUgUyhGMA8= rs=AOn4CLB2g1ocaleZ3_KoV9gVbVCIleGUbQ","width":168,"height":94},{"url":"https://i.ytimg.com/vi/Hqoxa1XjlJw/hqdefault.jpg?sqp=-oaymwE2CNACELwBSFXyq4qpAygIARUAAIhCGAFwAcABBvABAfgB1AaAAuADigIMCAAQARhlIFMoRjAP rs=AOn4CLA7DXUfyzOx_yIYyiR6mHCbuOZMVw","width":336,"height":188}]},"title":{"accessibility":{"accessibilityData":{"label":"Tube Lab #20b How to Read a Tube Preamp Schematic for Beginners by Tube Lab 8,070 views 4 years ago 19 minutes"}},"simpleText":"Tube Lab #20b How to Read a Tube Preamp Schematic for Beginners"},"longBylineText":{"runs":[{"text":"Tube Lab","navigationEndpoint":{"clickTrackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@tubelab194","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC8oqw6k6yTYTDTlu1qfTFSg","canonicalBaseUrl":"/@tubelab194"}}}]},"publishedTimeText":{"simpleText":"4 years ago"},"viewCountText":{"simpleText":"8,070 views"},"lengthText":{"accessibility":{"accessibilityData":{"label":"19 minutes, 59 seconds"}},"simpleText":"19:59"},"navigationEndpoint":{"clickTrackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWRIzqPWvr6smKDtAZoBBQgBEPgd","commandMetadata":{"webCommandMetadata":{"url":"/watch?v=Hqoxa1XjlJw","webPageType":"WEB_PAGE_TYPE_WATCH","rootVe":3832}},"watchEndpoint":{"videoId":"Hqoxa1XjlJw","nofollow":true,"watchEndpointSupportedOnesieConfig":{"html5PlaybackOnesieConfig":{"commonConfig":{"url":"https://rr1---sn-uxaxiv0nxx5q-nv4l.googlevideo.com/initplayback?source=youtube oeis=1 c=WEB oad=3200 ovd=3200 oaad=11000 oavd=11000 ocs=700 oewis=1 oputc=1 ofpcc=1 msp=1 odepv=1 id=1eaa316b55e3949c ip=2a02%3A27aa%3A0%3A0%3A0%3A0%3A0%3Ad49 initcwndbps=1247500 mt=1740767109 oweuc= pxtags=Cg4KAnR4Egg1MTM5MzE2MQ rxtags=Cg4KAnR4Egg1MTM5MzE2MA%2CCg4KAnR4Egg1MTM5MzE2MQ%2CCg4KAnR4Egg1MTM5MzE2Mg%2CCg4KAnR4Egg1MTM5MzE2Mw%2CCg4KAnR4Egg1MTM5MzE2NA"}}}}},"shortBylineText":{"runs":[{"text":"Tube Lab","navigationEndpoint":{"clickTrackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQEyB3JlbGF0ZWQ=","commandMetadata":{"webCommandMetadata":{"url":"/@tubelab194","webPageType":"WEB_PAGE_TYPE_CHANNEL","rootVe":3611,"apiUrl":"/youtubei/v1/browse"}},"browseEndpoint":{"browseId":"UC8oqw6k6yTYTDTlu1qfTFSg","canonicalBaseUrl":"/@tubelab194"}}}]},"channelThumbnail":{"thumbnails":[{"url":"https://yt3.ggpht.com/ytc/AIdro_mU9gTrVXUhkqNLxxFT7sIOzOVCye3OJu-0CEUlAa3EQQ=s68-c-k-c0x00ffffff-no-rj","width":68,"height":68}]},"trackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQFAnKmOr7WtjNUe","shortViewCountText":{"accessibility":{"accessibilityData":{"label":"8K views"}},"simpleText":"8K views"},"menu":{"menuRenderer":{"items":[{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Add to queue"}]},"icon":{"iconType":"ADD_TO_QUEUE_TAIL"},"serviceEndpoint":{"clickTrackingParams":"CK8BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CK8BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"Hqoxa1XjlJw","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CK8BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["Hqoxa1XjlJw"],"params":"CAQ%3D"}},"videoIds":["Hqoxa1XjlJw"]}},{"clickTrackingParams":"CK8BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB","openPopupAction":{"popup":{"notificationActionRenderer":{"responseText":{"simpleText":"Added to queue"},"trackingParams":"CLABELlqIhMIztSQn4DniwMVEcRCBR0HeBEB"}},"popupType":"TOAST"}}]}},"trackingParams":"CK8BEP6YBBgGIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemDownloadRenderer":{"serviceEndpoint":{"clickTrackingParams":"CK4BENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","offlineVideoEndpoint":{"videoId":"Hqoxa1XjlJw","onAddCommand":{"clickTrackingParams":"CK4BENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB","getDownloadActionCommand":{"videoId":"Hqoxa1XjlJw","params":"CAIQAA%3D%3D"}}}},"trackingParams":"CK4BENGqBRgHIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"menuServiceItemRenderer":{"text":{"runs":[{"text":"Share"}]},"icon":{"iconType":"SHARE"},"serviceEndpoint":{"clickTrackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQE=","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/share/get_share_panel"}},"shareEntityServiceEndpoint":{"serializedShareEntity":"CgtIcW94YTFYamxKdw%3D%3D","commands":[{"clickTrackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQE=","openPopupAction":{"popup":{"unifiedSharePanelRenderer":{"trackingParams":"CK0BEI5iIhMIztSQn4DniwMVEcRCBR0HeBEB","showLoadingSpinner":true}},"popupType":"DIALOG","beReused":true}}]}},"trackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQE=","hasSeparator":true}}],"trackingParams":"CKoBEKQwGAMiEwjO1JCfgOeLAxURxEIFHQd4EQE=","accessibility":{"accessibilityData":{"label":"Action menu"}}}},"thumbnailOverlays":[{"thumbnailOverlayTimeStatusRenderer":{"text":{"accessibility":{"accessibilityData":{"label":"19 minutes, 59 seconds"}},"simpleText":"19:59"},"style":"DEFAULT"}},{"thumbnailOverlayToggleButtonRenderer":{"isToggled":false,"untoggledIcon":{"iconType":"WATCH_LATER"},"toggledIcon":{"iconType":"CHECK"},"untoggledTooltip":"Watch later","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CKwBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"addedVideoId":"Hqoxa1XjlJw","action":"ACTION_ADD_VIDEO"}]}},"toggledServiceEndpoint":{"clickTrackingParams":"CKwBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/browse/edit_playlist"}},"playlistEditEndpoint":{"playlistId":"WL","actions":[{"action":"ACTION_REMOVE_VIDEO_BY_VIDEO_ID","removedVideoId":"Hqoxa1XjlJw"}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Watch later"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CKwBEPnnAxgBIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayToggleButtonRenderer":{"untoggledIcon":{"iconType":"ADD_TO_QUEUE_TAIL"},"toggledIcon":{"iconType":"PLAYLIST_ADD_CHECK"},"untoggledTooltip":"Add to queue","toggledTooltip":"Added","untoggledServiceEndpoint":{"clickTrackingParams":"CKsBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true}},"signalServiceEndpoint":{"signal":"CLIENT_SIGNAL","actions":[{"clickTrackingParams":"CKsBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","addToPlaylistCommand":{"openMiniplayer":false,"openListPanel":true,"videoId":"Hqoxa1XjlJw","listType":"PLAYLIST_EDIT_LIST_TYPE_QUEUE","onCreateListCommand":{"clickTrackingParams":"CKsBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB","commandMetadata":{"webCommandMetadata":{"sendPost":true,"apiUrl":"/youtubei/v1/playlist/create"}},"createPlaylistServiceEndpoint":{"videoIds":["Hqoxa1XjlJw"],"params":"CAQ%3D"}},"videoIds":["Hqoxa1XjlJw"]}}]}},"untoggledAccessibility":{"accessibilityData":{"label":"Add to queue"}},"toggledAccessibility":{"accessibilityData":{"label":"Added"}},"trackingParams":"CKsBEMfsBBgCIhMIztSQn4DniwMVEcRCBR0HeBEB"}},{"thumbnailOverlayNowPlayingRenderer":{"text":{"runs":[{"text":"Now playing"}]}}}],"accessibility":{"accessibilityData":{"label":"Tube Lab #20b How to Read a Tube Preamp Schematic for Beginners - 19 minutes - Go to channel - Tube Lab - 8K views - 4 years ago - play video"}},"richThumbnail":{"movingThumbnailRenderer":{"movingThumbnailDetails":{"thumbnails":[{"url":"https://i.ytimg.com/an_webp/Hqoxa1XjlJw/mqdefault_6s.webp?du=3000 sqp=CMzNh74G rs=AOn4CLDem4B1eac2GboSuaRKcCBmxGuMag","width":320,"height":180}],"logAsMovingThumbnail":true},"enableHoveredLogging":true,"enableOverlay":true}}}},{"lockupViewModel":{"contentImage":{"collectionThumbnailViewModel":{"primaryThumbnail":{"thumbnailViewModel":{"image":{"sources":[{"url":"https://i.ytimg.com/vi/JKoEprk4eaU/hqdefault.jpg?sqp=-oaymwEWCKgBEF5IWvKriqkDCQgBFQAAiEIYAQ== rs=AOn4CLBsZQTeXn9LEq4fkY7DffQO-PeUgw","width":168,"height":94},{"url":"https://i.ytimg.com/vi/JKoEprk4eaU/hqdefault.jpg?sqp=-oaymwEXCNACELwBSFryq4qpAwkIARUAAIhCGAE= rs=AOn4CLDFuyXRdtuhXUrV13uxfD2tcFcxxA","width":336,"height":188}]},"overlays":[{"thumbnailOverlayBadgeViewModel":{"thumbnailBadges":[{"thumbnailBadgeViewModel":{"icon":{"sources":[{"clientResource":{"imageName":"PLAYLISTS"}}]},"text":"25 videos","badgeStyle":"THUMBNAIL_OVERLAY_BADGE_STYLE_DEFAULT","backgroundColor":{"lightTheme":2631199,"darkTheme":2631199}}}],"position":"THUMBNAIL_OVERLAY_BADGE_POSITION_BOTTOM_END"}},{"thumbnailHoverOverlayViewModel":{"icon":{"sources":[{"clientResource":{"imageName":"PLAY_ALL"}}]},"text":{"content":"Play all","styleRuns":[{"startIndex":0,"length":8}]},"style":"THUMBNAIL_HOVER_OVERLAY_STYLE_COVER"}}],"backgroundColor":{"lightTheme":4144177,"darkTheme":4144177}}},"stackColor":{"lightTheme":12563859,"darkTheme":9209200}}},"metadata":{"lockupMetadataViewModel":{"title":{"content":"Building and Fixing Tube Amps"},"metadata":{"contentMetadataViewModel":{"metadataRows":[{"metadataParts":[{"text":{"content":"Mike Freda
#############################
