Ditching Class A Amps due to Heat - Sort of a Poll


A discussion elsewhere about the future of Class A made me wonder how true one statement really is. So the questions are...

Have you done away with your Class A Amp due to Heat concerns?

Will you be moving away from Class A Amp due to Heat concerns?

Will you never buy a Class A Amp due to Heat concerns?

I only have a class A/B unit that does Class A up to 6 watts with almost no heat so really can't speak for those who have used in the past or currently own and run Class A Amps.

brianh61

I recent sold off my excellent Classe' Audio Omega Mono's that did Pure Class A to 30% rated power, at 200lbs per amp they were never more than warm no matter how i played them. They did take a few hours to fully warm. I decided to try Trinnov AMP 16 that allegedly is a perfect match for my Trinnov AL16. They were right, its glorious, stunning even. The dynamics and detail are amazing. NEVER did I think they were going to be this good. They are Class D, they do run hot, with bridging into my LR Wilson Sophia 1 at 4ohms have 1000 watts on hand. I do the same for my center channel. The AMP 16 as 2 120v plugs that need feeding. It was a win in every direction for me. Less power, better dynamics, excellent detail. 

I previously used Krell FPB 200 for awhile. The Krell was a tad bright, not good match with my speakers at the time either and yes then the heat. I went to tubes kept the heat lost the bright. For many years I used VTL amps and lived with the heat. Currently use a Jolida JD-1000A it does not get all that hot and I live in a cooler climate these days.

 

Have you done away with your Class A Amp due to Heat concerns?

no

Will you be moving away from Class A Amp due to Heat concerns?

no

Will you never buy a Class A Amp due to Heat concerns?

no

I currently own Krell class A (FPBc series) and McIntosh class A/B amplifiers. They rarely are moved so but when they are it’s not too big a job for myself and either my wife or a buddy (got to protect the back, but will also say they have not moved in probably four years so I would not base an amp decision on moving them). My experience within my listening space there is no substitute to the class A sound. Liquid, fast attack, articulate, responsive. Our listening room is in the basement so don’t really feel the heat issues others discuss. My wife will occasionally mention the heat during the summer so when she does I turn off the Krells and power up the McIntosh. I like the sound of both our A and A/B amps - but for our speakers and room it’s the class A that take the best prize.  All that to say I’m intrigued with the advent of class D offerings - and would like to hear one. But like others - I’ve got an investment in what I have now and they all perform spectacularly. 

Had the Rotel rb1090 for just over 2 years, one morning, woke up early on Sunday, went downstairs, pushed power button on, zzzzzzfffftyttttt bright white flash, inrush limiter fried, I was angry, one of the best stand alone SEPERATES I’ve had, 380w 8:ohm, 725w in 4 ohm, made my cv d9’s absolutely,slam.

miss that,amp, but I’ve definitely surpassed her with flotsam and jetsam (my monos) that was a great sounding,amp. 
 

Never had a class A amp,  I’m told the odysseys with every top tier parts which I have are a few watts in class A, it’s not the same as a full class A pedigree. 
 

before I bought my monos I have. NOw,, I was making a decision between what I went with and  some pass lab monos. I ended up with a great price from the lady who sold em to me, as she was going through a divorce, and I pretty much stole them, but she was vindictive, and I made out like a bandit. 
 

no regrets what so ever.  I had 2000W rms from the 2 carvin dcm amps I mono’d.

they didn’t last more than a year' before things went south, you get what you pay for.  One day, I,will snatch up some class A monos. 
 

cheers

I tan a Plinius class A amp for a while but it seemed to lack power. Switched to class A/B not because of heat but performance. I like the A/B much better.