Tubes to solid state for amplifier path...

Soundlock,

you must not live in Florida. I have 2 AC units for my 2 story house, and during the summer months, even with both units running, my audio room during the daytime is very warm. If I turn on my 845 based mono tube amps, within 45 minutes, I am down to my shorts. I think heat is a very valid concern.

I've never owned a tube amp, although I'll likely make the plunge eventually. However, I've owned a Plinius SA 102 amp (140 WPC in class A) for approx. 14 months, and have never had any problems with it heating up my 15' x 20' x 7' room. Yes, the amp runs hot to the touch, and I give it plenty of room to breath, but I'd be surprised if my room temperature even goes up 1/2 degree when I'm running it in class A.

Although Class A power amps are known for their great sound, they are very inefficient and will use a lot of power even when idling. It will be hot!! You may want to consider a Class A/B power amp which switches from Class A to Class B when full current is not being demanded of the power amp, which is probably 95% of the time.

Pinkus: I own land in Leesburg, Fl, but I never lived there. However, I did live in Tehran, Iran for 2 years in l965, l966, l966 where the temperature hit 110 degrees and my all tube system didn't bother me at all. I also have 2 Ac units in my current home in Tennessee (3500 sq ft) and I ran a Krell FPB200 which is a hot box, no trouble at all. I guess some people can't take the heat as well as others. I can sympathize with you. Enjoy the music.

Well I live in the SanFernando Valley of LA. It do get hot here in Chatsworth; no doubt about it. I ran CJ monos for years. Those be the Premiere 5's and 8's (28 tubes) I also had two dif. 845 SET monos and I never worried about my toaster going on the fritz.
I now have the CJ 350 ss. Mine runs cool to warm depending on how hard you push it.I can also say it is just a better amp than the 5/8's. I also had the Belles 350a ref. and it runs as cool as the CJ 350ss. Neither of these amps ever had me wanting me to go back to tubes. The cost of operation is soooo much nicer,too,w/ no tubes to replace.