I have enjoyed this Preamp for about a year. Purchased new directly from Schiit July 2019. Can be used in passive mode or with the tube active in the circuit as a buffer. Sounds great either way, though it is slightly more transparent in passive mode. The tube seems to add a minimal amount of gain, and a bit more dimensionality to the sound. Comes with the stock 6N8S tube (<100 hours) and the optional Tung-Sol 6SN7GTB (never used). Original packaging, remote, manual, and stock power cord included. Price includes paypal and shipping to CONUS. No international shipping, please do not ask. Will consider trades, Asgard 3? PM me with questions.