More from the Estate of an Audiophile. Musical Fidelity TriVista 21 tube DAC. When new this DAC retailed for $2500.00 When the TriVista DAC was released it was quickly rated a Stereophile Magazine Class A DAC. This DAC uses two power supplies 2 transformers and two chokes (one each for digital and one for analog). It’s a heavy DAC (over 30 pounds) not your typical 6-9 pound DAC that many are used to. The Trivista DAC is very musical. New Tubes were installed last year. Should not need replacement for quite a few years. For inputs this DAC has Coax (SPDIFF) and optical inputs). No USB input. If you file player, streamer, or source component has a SPIDIFF output this DAC should work. Analog outputs are RCA. The DAC will convert digital data from CD or CD transports to analog sound. The DAC will oversample up to 24/192. Cosmetically its pretty clean. One rub mark on upper left hand corner of faceplate. Not very noticeable but wanted to point it out. DAC will be well packed. Lower 48 states shipping only. Local pick up also fine.