2. amps-preamps
  3. 128359-41

Amps Atma-Sphere M-60 Mono blocks OTL design

I just purchased a used OTL Atma-Sphere M-60 mono blocks that I have sent to Atma-Sphere to be upgraded to the current model 3.3 and I also added the option of a higher quality power supply and V caps.

I have sold my old trusted Eggleston Andra 2’s speakers and have built some monitors using Aurum Cantus ribbons (102db) and Aurum Cantus midwoofers (90db) that are both rated as 8 ohm nominal. I have a DEQX Premate and will be crossing over to (2) JL Audio F-113 subs at 80hz.

Currently I am using a solid state high power stereo amp (Pass Labs) that I used with the Andra 2’s.

The Atma-Sphere M-60 is rated at 60 watts class A and is said to work better with higher impedance loads.

It will probably be a few weeks until I get the M-60 and was hoping someone could provide opinions of what to expect.

I listen to late 60 early 70’s classic rock music mostly. Sometimes loud.

ozzy

128x128ozzy
ozzy's avatar
ozzy OP
7,542 posts
 
realdeal, dragon_vibe,

I still can’t believe how great the sound quality is with my updated M-60’s.
I am using dual Zero’s with my DIY bi-wire speakers and will not turn back. With the Zero’s I noticed no degradation in sound quality but they sure did allow my DIY speakers to really open up. Especially in tone.

Now, I have such a soothing sound but detailed and with a wide open soundstage. I never came close to achieving this sound with solid state amps.

ozzy

tzh21y
1,654 posts
 
great amps.  listened to them many times.  very nice
tzh21y
1,654 posts
 
you should try their pre amp. phenomenal.
tzh21y
1,654 posts
 
in fact, I bet Old Merlin VSMs would sound amazing with the sixties.
ozzy's avatar
ozzy OP
7,542 posts
 
tzh21y,

Thanks,
I would like to try the Atmasphere Preamp someday.

ozzy

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