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Pure Class A amps above 100 Watts?

What are the best options in Pure Class A amps above at least 100 watts in 8 ohms? The ones I know of are:

1) Pass Labs XA100.5
2) Pass Labs XA100.8 (and above)
3) Accuphase A-200
4) Soulution 530

Any others? Im trying to keep it under $10K, which the first two options can be had for used.


jozurr
cat345
19 posts
 
The Mark Levinson ML-2 was a 25 watts class A mono amplifier that weighted 65 lbs. What would be the weight of a non fan cooled 100 w. pure class A stereo amplifier?
n80
2,116 posts
 
@cat345 I have a Proceed HPA2 Dual Monaural (a cheap Mark Levinson). It weighs about 100 pounds and delivers 250 watts. Most of the back half of the unit is heat sink.

Don't know whether that helps or not....since I don't know what class amp it is......

Would love to know.
mitch2
3,888 posts
 
300 wpc Class A Clayton - 90 lbs+/-
georgehifi's avatar
georgehifi
10,312 posts
 
Not with the way those heatsinks are arranged, and they don’t say 300w Class-A. They say 300w into 8ohms which will be a/b with a few watts of Class-A bias.

Again power consumption is rated at 300w, big difference to how much Class-A bias is on them.
M300 - 300 watt monoblocks


Cheers George
mitch2
3,888 posts
 
They actually do say 300wpc in Class A George. The amps also have a bias switch and the manufacturer states they provide 200 wpc in Class A when the switch is in the low bias position.
The Clayton Audio M-300’s are high current differential True BalancedTM amplifiers using class A design in both the driver and output stage. All gain transistors are operated in their linear region for the smoothest, purest sound reproduction.

There are two levels of bias --- high and low --- for maximum user convenience. The low bias setting can be used when operating the unit in standby or for non-critical listening. Indeed, since the low bias setting still provides class A operation up to 200 watts, you should hear little difference between the settings most of the time. For the absolute highest quality reproduction of dynamic material and the most critical listening, the amplifiers should be set to the high bias level for full class A operation.

Rated power output:
300 Watts continuous rms into 8 ohms in Class A
600 Watts continuous rms into 4 ohms in Class A
They run very hot.


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