Listed is used could be used for parts I am unable to determine whether it's functioning or not I don't have the proper equipment to test it very likely that it is working

The Aphex Tubessence 2 Channel Thermionic Microphone Preamplifer Model 107 is a top-of-the-line gear for professionals in the music industry. This preamp boasts two channels and a thermionic design that provides a warm and natural sound to any recording.

With brand recognition from Aphex, this preamp guarantees high-quality audio performance. Ideal for studio recording, this unit is perfect for anyone in need of a top-level preamp.