I have a Vintage Phase Linear 4000 Restored Autocorrelation Pre-Amplifier with Wood Case in very good condition. It was recently refurbished. All electrolytic capacitors were replaced 102 total. Cold Solder joints were also repaired. All controls and switches were cleaned with deoxit. All RCA jacks were also cleaned. It works and sounds great. All inputs and outputs work perfectly. This is a very nice audiophile quality preamp. Please do your research. The wood case looks homemade but built very well. There are 4 small holes in the wood on the top. It measures 20.5 W x14.25D x 8.75H. The only issue which all these Phase Linear preamps have is that at zero volume you can still hear a low output. Not a big deal but it is worth mentioning. Price is $350.00. Please email or call Todd at 717-691-78zero6. No calls after 9pm please. See my other listings for more electronics, collectibles and stereo equipment. Search "7806" on Craigslist. IF YOU SEE THIS LISTING IT IS STILL AVAILABLE. I DELETE ALL MY LISTING AS SOON AS THEY ARE SOLD.
Specifications
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.25%
Gain: 65dB (MM), 15dB (line)
Signal to noise ratio: 72dB (MM), 83dB (line)
Semiconductors: 45 x transistors, 9 x IC, 57 x diodes, 2 x zener regulators, 2 x LED