Atma-Sphere MA-1 Mk.3.1 Vs. Atma-Sph. MA-2 Mk.3.1

Mechans. With all due respect: re powering the Avalons with Atmasphere amps.
No doubt in my mind the MA-1 would be the better choice over the MA-60. The MA-60 hasn't a chance comparatively speaking here.
For that matter, even the MA-1's would be considered marginal at best when driving the Avalon. The only Atmasphere amplifier capable of getting the best from Avalons are the MA-2's.
For the record, my MA-2 mk2's were sold to an Avalon owner.
To be candid here: Even though your Focals are quite sensitive at 92 db, I wouldn't even consider Atmasphere amplification due to their lowish impedance load on the amplifier. Most all OTL topologies are not comfortable with impedances much under 6 ohms. As the impedance of the speaker drops, so does the wattage of the amplifier.

The Tannoy DC's impedance is very benign, nominally 8 ohms, typically around 9 ohms and never dips below 6.6 ohms. The perfect load for a Atma-sphere amplification.
In Donfibres room... Even with an extra 15db of headroom for the dynamic range over and above the power required I sincerely doubt more than 25 watts would ever be tapped.

Rushton. A great analogy and well said.

I was mistaken when I said the MA-1 was what I had heard several times. It was in fact Rushtons Avalons that were being driven by the MA-2. Forgive me for my error.
The speakers that the M-60s were driving have a very benign impedance they were Coincidents which I recall being rated at worst 11 Ohms. In any event I did acknowledge that the Tannoys were not known for dropping their impedance. Thus it was clearly up to the OP whether he would need the extra power.
I still stand by my remark however that the MA-2 on the Avalons sounded better but quite different than the M-60 on the Coincidents which have their own outstanding attributes. My amps have 4 Ohm taps so maybe that is why they can tolerate the more demanding load but they are paralell PP, not OTLs.

While I have never heard the 11 ohm Coincidents, I would imagine they would make for a very good match with any model Atma regardless of power.

This is great! Thanks for all your inputs...I have to talk to Ralph soon about this, but your comments are bringing me closer to the MA-1's...Other comments are very welcome and I will keep you informed of my decision and my experiences...