Schiit Valhalla 2 with upgraded tubes sourced from Jim McShane (the best if you are not familiar with him). Input tubes are Genelex 6922 which I paid $60 for the pair. Driver tubes are Russian 6n6p which I paid $40 for. I will also include the stock Schiit tubes as well. I also have installed socket savers for all 4 tube positions that I will include. I purchased these mostly for aesthetics to lift the tubes up a bit higher so they are more visible but this also leads to the unit running a bit more cool. Stock power cord as well as OBM. I see no flaws with this unit.

I ran this amp with Sennheiser 650 HDs and it was more than I could have asked for. Had zero itch to upgrade to anything else. I moved to a new home last year which has more room for a proper two-channel system so I have hardly used it in the last 14 months. $20 for flat rate CONUS shipping from Miami, FL.