On list is a very musical headphone amplifier board, being the gain section with reference to Grado RA-1. This board is the same as our another item "Headphone amplifier assembled nice housing Grado RA-1" except this one has no housing and no power adapter included in the shipment. This board is good for those who want to install the board into their own housing. The board requires a 12Vx1 AC input.

Board dimension : 115mm x 70mm

We provide schematic to buyers by EMAIL.

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