Classic Quad 33  Preamplifier. 

This is Quad 33 in working condition,  comes with power cable. The marks could most likely be cleaned off if your careful enough.

Product Identifiers

Brand
Quad

Model
33

Type
Pre-Amp/

MPN
Does Not Apply

Key Features

Amplifier Type
DIN

Number of Channels
2

Performance

Signal to Noise Ratio
80 dB

THD at Rated RMS Power
0.02 %

Input Sensitivity
250 mV