Alto TS312 Mainboard – for Preamp board – Amplifier not working
Tested item and found that when running a 1kHz sine wave, signal is good up to the amplifier module. Can sweep the sine wave full frequency spectrum with no distortion with both channels. Amplifier might be able to be repaired but its no longer supported by Alto, this unit is good for input jacks, knobs, and the power jack. The amplifier module is dead except for providing power to the preamplifier/jack board. Comes with 12 mounting screws.