Soundcraftsmen Pro Control Four *Restored*

Soundcraftsmen Pro Control Four preamplifier

SERVICED:

*replaced all electrolytic capacitors with quality Nichicon audio caps

*added local decoupling capacitors to all opamp ICs

*lubed potentiometers

*painted cover

*replaced rubber feet

*cleaned

*tested THD and S/N

*played

This preamp uses all solid state CMOS switching to route the audio signal, and does so near the RCA connections so there is no additional noise picked up going to the front of the preamp. And it is one of the best S/N for a preamp. It has many inputs and signal loops for EQ and sound processors. Very versatile.

Frequency response = kHz +/-0.1dB

Input sensitivity for .5V output, phono = 1.75mV, high level = 120mV

S/N 2V output (A weighted, phono = 85dB, high level = 105dB

Maximum output = 8.5V

THD+N = <0.005%

Tone control, bass = +/-10dB @60hz, treble +/-10dB @10khz

Output impedance = 180 ohm

Crosstalk = 90dB