Mesa Class A VS Class AB EL84

Red Planet

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So I was looking back at a post and it made me think just which are what.

What Mesa EL84 amps are Class A and which are Class AB?

I know the Lone Star Special is billed as Class A and the Maverick to me sounds like Class A while the Mini Rectifier (just by playing it) is clearly Class AB.

I got some rather rude post for some reason when I posted about it so lets keep this thread to if you dont have anything nice to say don't post.
 

Timbre Wolf

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The Lonestar Special is the only amp of those that I have personal experience with. It is only truly Class A in its single-ended 5-watt power mode. The other modes are called "class A" by Mesa, but not by other experts in the tube amplifier field.

I wouldn't worry too much about the whole Class-A thing anyway. Other circuit characteristics matter much more: preamp type, fixed- vs. cathode-bias, negative feedback, phase-inverter type...

- Thom
 

Red Planet

Member
Messages
4,347
The Lonestar Special is the only amp of those that I have personal experience with. It is only truly Class A in its single-ended 5-watt power mode. The other modes are called "class A" by Mesa, but not by other experts in the tube amplifier field.

I wouldn't worry too much about the whole Class-A thing anyway. Other circuit characteristics matter much more: preamp type, fixed- vs. cathode-bias, negative feedback, phase-inverter type...

- Thom
Not really worried just want to know which are.
 

redchapterjubilee

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I have a 5:25 and the manual claims it is Class A in 5w mode. I dunno enough about it to know if it's legit or not.
 

Timbre Wolf

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Not really worried just want to know which are.
Worry isn't the right word, then. What I mean is that the whole Class A mystique is not significant in deciding about the sonic qualities of an amp. Other circuit design parameters are much more telling (preamp & tone stack type, fixed- vs. cathode-bias, negative feedback, phase-inverter type, rectifier type...).

- Thom
 




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