Sorry to hear that Moondance is going out of business. I've purchased a fair amount of equipment from them over the years. (I relocated to the New Orleans area earlier this year.) In addtion to Audio Unlimited, you can try Denver Audio Designs, (Krell, VTL, Thiel, PSB, Arcam); Cherry Creeek Audio (Audio Research, Krell, Revel, Magnepan, Vandersteen). There is also a shop on Belleview in the Denver Tech center whose name escapes me, but they carry BAT, Jeff Rowland, Vienna Acoustics. Another option is Listen Up. They are mainly geared to HT, but they do have B&W, Sonus Faber, Musical Fidelity, Rotel, Classe. Finally, I'd schedule a visit to see Jim at Sounds Real Audio. If I'm not mistaken, I think he sells only tubes. Last visit there, he had DeHavilland, Sophia Electric, FJ Loudspeakers, Wilson Benesch, Cain &Cain. There are also great stores in Fort Collins and Colorado Springs if you have time to get there. FWIW, I've lived in 6 different metroplitan areas, and I think Denver is hard to beat for Hi-end audio. Hope this helps. Good luck!