Fostex HPA4 Unboxing
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Video Source: www.youtube.com/watch?v=n825rGu7RhM
http://www.headphone.com/headphone-am... The Fostex HP-A4 is an extremely versatile unit. For starters it's a very clean and powerful headphone amp that can handle nearly all cans with a high/low gain switch adjustment. It can also be used as a pre-amp for active (powered) speakers using the RCA outputs.
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