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  1. honglong

    I have modded an B-Tech BT928 Headphone Amp

    Hi, I modded this amp yesterday: B-Tech BT928 Headphone thanks to Rockgrotto http://www.rock-grotto.co.uk/B-tech.htm The upgrades: 1. upgraded the resisters with the metal film type 2. upgraded the capacitors to Panasonic FC and ELNA capacitors 3. Upgraded the Op Amp to a OPA2134PA and...
  2. honglong

    B-Tech BT928 - Can anyone Mod this?

    Hi, I have obtained one of these headphone amps, B-Tech BT928 and would like to get it modded. I may try myself, but before i do, does anyone on here mod these? Obviously i would pay for this. Could you give me a price and more info about the mod. Thanks in advance!
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