I admit I have never believed or understood the tubies. They rattle on about air, lushness, warmness, and other general terms that sound like hogwash. Tubes couldn't possibly be worth a damn I thought - old technology that is passe. The wait on the Outlaw allowed me to do a lot of reading, much of which reinforced my belief this tube stuff was nonsense. Fortunately, it also left me to browse want ads, ebay, pawn shops, etc. I picked up several sets of speakers and ended up short on amplification. A set of Klipsch Heresies sat unused and begging to be played. I had heard the maniacal ravings of folks on the Klipsch forum about this little integrated tube amp called an Eico HF-81 which was supposed to stomp steady state amps costing much more. I heard folks here talking about using tube preamps for two channel. I thought I need to get a tube amp and see if this is for real or these people are on crack. Started researching DIY. Kept thinking I don't want to spend this much on something I may hate. The Heresies kept begging. Dropped onto Ebay and won an auction on an Eico with very little info on its condition. Immediately thought "oh, shit" what did I just do. I paid $182 for something I know nothing about. I will get to the point. Received the Eico and it was in great condition. Opened it up, peered inside, and thought what the hell is all that. Discovered it had all "mullards" - supposed to be a big deal - so I thought ok, all is not lost; I can resell the damn thing. Hooked it up to my Heresies and connected a PS2 to play CD's. As I listened casually to the EICO, I kept hearing sounds that suddenly caused me to feel like I heard it in the room; now the sound was coming from the speakers in the room but this was the item making the sound seemed to materialize in the room. I listened and kept thinking that is neat. I decided to take a more active role in listening. I went through some Jewel, Neil Young, Dire Straits. I was hearing something but I couldn't lay my finger on it. During Neil Young (Goin Home), it came together. As I listened I became decidedly aware of the drums playing in the background - in fact, I 'knew' exactly where the hi-hat, tom-tom, crash cymbal, etc. where located. I could hear the variations of the metals used, I could hear whether the hi-hat was muted or not, I could hear the shimmering and fading away of the crash cymbal as it was played. I WATCHED a drummer's movement across a drum set. I needed to get a grip. I marched into the other room and queued the same track on my KSP400's through the Yamaha. I focused and listened. The sound was fantastic, very good, unbelievable, but...the shimmering of cymbals ended too abrubtly, the difference in sounds was not as pronounced, the instruments were not revealed in the same place. I heard the drums and they were great - but I no longer saw them. It is difficult to describe, but one music system disappears and instruments, singers, etc. take its place and you feel like you can reach out and touch the different voices you are hearing. You can 'feel' their presence. It is surreal. Sorry for the long post. My eyes were opened. Maybe this will arouse the curiosity of someone else. If you like two channel, you owe it to yourself to check out tubes and experience the effect a musical instrument can have on your soul. The Eico is incredible and can be found cheap; just use more prudence that I did in making your purchase.