Great amp in great shape, works perfectly and in good cosmetic condition.
"Features wise, the TTVJ Slim amp seems to have it all. It has a microprocessor controlled analog stepped attenuator, with 32 steps of 2dB increments and an impressive ±0.2dB channel matching tolerance. Power output is 3.3V RMS with 100mA maximum current. The amp can drive any headphones from 16 to 600 Ohms with fabulous fidelity (as quoted from the manual). The regulated power supply gives maximum power output even when battery gets low. And finally, a user selectable three positions gain switch for choosing the appropriate gain level (0 dB, 10dB, and 20dB)". - quote from Mike at Headfonia.