Best Class A amp with SLAM

Mapman...from the website product page:

"We included a very easy to use built-in tube tester (which can be used at any time the amp is on), allowing one to test the output tubes 'on-the-fly' in a matter of seconds. Bias and DC offset functions are automated, using an Atma-Sphere-patented method, with meters to monitor the tubes, output power, line voltage and other features."

Tube tester included...nice!

Auto-bias...that should help a lot.

I recall VAC features that on some of their best amps and touts how hard it is to pull off properly.

Now I just need the black Friday sale.....

Since we're talking CLass A here, I won't worry about the power bills, that's probably a given for any Class A amp that can realistically lay claim to having the best slam.

The BEST anything never comes cheap.

Chocolate maybe. Having tried many, Hersheys may still be the best.

Nice features on that amp.

Atma MA2 are on the way to me, But I will always keep Clayton as My Secondary SS amp and soon as the Atma Arrive. The Clayton will power up my Theatre System.

Dragon, when you get your MA2s run in, I would be interested in hearing how they compare with the M300s (that I also own a pair of). Do your M300s have Wilson's latest power supply upgrade?
A year or so ago, I tried to like a more "energy friendly" pair of high powered class A/B monoblocks and it was pretty much game over before it got started. The A/B amps had good bass but the Claytons ran all over them with respect to depth, texture and connectivity to the music. I have yet to hear a class A/B amp capture the body, dimensionality, and relationship between attack, sustain and decay, as well as the Claytons, or the Lamm M1.2 hybrids for that matter (that also operate fully in Class A).
The Lamm M1.2 Ref amps indeed have slam in the form of a very powerful and full sounding bass, up to their rated power, compared to some amps that start to become hard as they approach their power limit. The Lamms just lay it all out there until there is no more to give. They deliver the most powerful 100wpc I have heard, sort of like a classic big block V8 where you can just feel the power reserves without having to hear it wound up.