The C27 is a classic McIntosh preamp. This one is in stellar condition, with excellent glass. There is a bit of wear on the knobs and the trim near the power button, to be expected from a piece over 40 years old. Electronically, this piece is right as rain.

 

SPECS

Type   Solid-state stereo preamplifier

Frequency Response   20Hz to 20kHz

Total Harmonic Distortion   0.05%

Gain   62dB (MM), 20dB (line)

Input Sensitivity   2mV (MM), 250mV (line)

Signal-to-Noise Ratio   85dB (MM), 90dB (line)

Output   250mV (line), 2.5V (Pre out), 10V (Pre out Max)

Dimensions   16"W x 5.44"H x 13"D

Weight   18.08 lbs.

LINER NOTES

McIntosh model C 27 preamplifier features: You Choose From Seven Different Program Sources. The input switch selects from five different sources or you can choose to listen to either of two tape recorders at the push of a button. You Always Get The Ideal Stereo Image. The McIntosh seven position mode selector has facilities to permit the proper balancing of a stereo system to maximize stereo imaging. It assists in easily restoring proper stereo perspective should you play an improperly made recording. Tape Recording and Playback Made Easy. Tape input, tape output and switching facilities are provided for two three-head tape recorders. Simply push a button to listen to either one - or record from any selected source on either or both - or - copy from one tape recorder to another while listening to an entirely different program. You can instantaneously monitor either tape recorder. Listen To Your Quiet records, Quietly. Any unwanted noise (hiss, rumble, fry, etc.) can be reduced with the four position filter switch. It alows the removal of low frequency noise, high frequency noise or both yet retaining as much of the wanted program as possible.