PPI 2120 Amplifier
$175 shipped in the U.S. It's a little scratched on the cover.Here's the spec's on the PPI website:
A 2-channel amplifier 2Ó30w at 4 ohm, bridgeable - 120w. Has a switched-off built-in HP/LP crossover, finely adjustable in 20HZ-5KHZ range, attenuation rate - 12db/octave. A built-in QBASS filter works in LP mode, boost - 12db at 40HZ. High-level input is linkable directly to a head unit amplifier with no linear outputs. T.H.D. in working frequencies range < 0.05%. Signal/noise correlation - no less than 105db.

A 2-channel amplifier 2Ó30w at 4 ohm, bridgeable - 120w. Has a switched-off built-in HP/LP crossover, finely adjustable in 20HZ-5KHZ range, attenuation rate - 12db/octave. A built-in QBASS filter works in LP mode, boost - 12db at 40HZ. High-level input is linkable directly to a head unit amplifier with no linear outputs. T.H.D. in working frequencies range < 0.05%. Signal/noise correlation - no less than 105db.



