so I was biking around yesterday and found a Spectro-Acoustics EQ in pristine condition...noted model number and went home to read about it...
the web said : " Spectro Acoustics was one of the three companies started up by engineers who left Phase Linear. Spectro Acoustics was started by Robin Gudgel. The two other companies were Tapco and Carver, started by Bob Gedgel and Bob Carver, respectively."
and
210r 10-band,
" To those of you familiar with Spectro Acoustics gear You are aware of the quality of build. This mid/late 70's high end manufacturer produced some well built, good sounding equipment. This piece is over built, all the parts were military spec at the time as I remember......sliders are silicone lubed and should not have a cleaner used on them or they will loose their characteristic "feel".......the weight is 12lbs, with total immunity to external magnetic fields, distortion figures are IMD....0.0075% at any output up to10 volts composite, THD........less than 0.05% at 1 volt rms output......S/N is better than 90 db below one volt........dynamic range noise floor is over 105 db below full output...... The functional versatility of the Model 210 is unsurpassed by any product of its kind. The model 210 was far ahead of its competition in terms of maximum signal-handling ability, or so called headroom. Its integrated circuit servo op amp output stage can directly drive as many as ten super power amplifiers in parallel without problems. The controls/switches have a solid expensive feel. The sliders are not illuminated. There are10 band centers per channel with unity gain adjustments for each channel providing 30db total adjustment(+15db/-15db). The Model 210 is pristine black /gold brushed aluminum, 1/4 in. faceplate and comes with a hard wood cabinet extra. I found the unit quiet in operation, utilitarian/rugged in appearance and use. This is not a cosmetically flashy piece, it looks more like an expensive professional studio piece of gear. Very well made."
so I went back last night and bought it..since one is listed for $169 at classicaudio.com
QUESTION:
there are "unity gain" adjustments for both right & left channels....my understanding of this is not rock solid..tried the web, but most hits were about UG on amps....
can someone here clarify me on the UG function as it works on EQ's ????