This unit was purchased in 1993. Made in the U.S.A. Multitude of positive reviews. Here's one from Stereophile published in 1991 and updated in 2014.https://www.stereophile.com/content/audio-alchemy-digital-decoding-engine-v10.
Comes with all the paperwork, power supply, and a multitude of cables.
CASH AND CARRY ONLY. If interested, please provide name and telephone number.