Paul's Mugshot
Paul Speltz's Tweaks

Of all my windsurfing, skiing & snow boarding equipment, and motorcycles and audio equipment, my favorite toys are my M-60 amps. I have had more fun with them in the past year than any of the other toys.

As time permits I plan to post some of the fun discoveries I've made about the M-60s (use the links below). Most of the discoveries I've made have lead me down the path of engineering a circuit change that I've implemented into my amps.

I'm one of those people who fixes things that are broken, and also fixes things that are working. So don't get me wrong, I think that the Atma-Sphere M-60s are one of the best, most unique pieces of audio gear available anywhere.

The M-60s are the perfect amp for me because stock they sound better than any amp I've heard, and their point to point wiring and chassis style enables me to easily make changes.

Paul's Workshop
Paul Speltz
Senior Engineer
paulspeltz@hotmail.com

The Zero
(Impedance Matching Autoformer)

Speltz's Discovery #1
(power-up relay)

Speltz's Discovery #2
(6336A/B mod)

Speltz's Discovery #3
(power supply mod)

Speltz's Discovery #4
SLCF
(Super Linear Cathode Follower)

Speltz's Discovery #5
output impedance

Speltz's Discovery #6
Zeners

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