Quadraphonic, 4 channel Phase Linear 4000. All pots and switches have been cleaned. Board bases have been cleaned. No resoldering has been done.

Someone asked about the "sponge" material in the photo. That is standard and original for holding the plug-boards in place. So glad they did not use that foam material that crumbles.

This Phase Linear 4000 preamplifier is a vintage electronics gem that will surely enhance your audio experience. With its great cosmetic and functional condition, this preamp is perfect for any audiophile looking for a high-quality sound output. The brand, Phase Linear, is known for its durable and reliable products, making this preamp a great investment for any music lover.

The model, Phase Linear 4000, is a vintage audio & video classic that will surely impress any audiophile. Its unique features and high-quality sound output make it a great addition to any music setup. This preamp is perfect for those who are looking for a high-quality sound output without compromising on style.

Buy with confidence. Over 24 Years on ebay. Over a thousand, 100% positive feedbacks. Packed for smooth delivery after 4 foot drops (really!…check out what they say online: a typical package is subjected to) but do not recommend dropping it to test this out.

Returns accepted within 30 days if you ask questions before you buy. Something important to you may have been omitted from the description.

 

Returns are accepted within 30 days on broken items or not as described. No returns if it operates correctly but you do not like the way it sounds.