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SOLD - FOR SALE: Atma-Sphere M 60 Mark 3.3 Mono Blocks

Item #649429290
Info: Atma-Sphere M 60 Mark 3.3 Mono Blocks

Asking Price:
USD $4999.00
Retail Price: USD $9000.00
Payment method: Paypal
Shipping weight: 100.00 (lbs) Calculate Shipping
Condition: 9 - Excellent (?)
Date Posted: Apr 11, 18 9:45am (PST)
Edited: May 19, 18 11:08am
About Seller: Big Bruno
South Rockwood, MI
United States
[other classified ads]
Product Brand: Atma-Sphere
Product Model: M-60's
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** This Ad is Marked as SOLD by seller and cannot be responded to. **

For sale is my M-60’s from Atma-Sphere, this is the latest version the Mark 3.3 which is currently selling at $7900. These amps bettered my Pass Labs X350.8.

Awesome sounding!

Add: 3% for PayPal

Balance of 2+ year warranty is still in effect and is transferable.

Additional Atma-Sphere installed upgrades: Optional Features
1. Meter Panel finish in hi polished brushed anodized silver.
2. V cap copper foil reference capacitors updated throughout.
3. Updated Power supply boost.
4. Updated Cardas dual speaker binding posts. (If bi-wiring desired).

The installed tubes are only one year old.
1. NOS input tubes.
2. The Russian output tubes were made for the Russian Military 1970 vintage.
3. PLUS I will throw in another complete brand new set (16 tubes) of Russian output tubes that were made in the 1970's for the Russian Military.

Please add $120 for shipping costs.

Below are a few reviews.
From the Absolute Sound.
“Other than being fascinated by the bass performance, I was impressed by many aspects of the M-60. In my experience, few tube amplifiers have the purity and neutrality of this one. Expansiveness of soundstage and extension on top has to rank with the best, too. The sound is smooth, but not syrupy smooth, with no excess fat needing to be trimmed. If you like bloat and coloration, you probably won’t like the Atma-Sphere.
Most important is the M-60’s ability to bring you closer to the music. A film or layer of grunge is removed that you didn’t even know existed before. It’s often described as the difference between being a spectator at a musical event and being part of it. When I first sat down to listen to the M-60 I couldn’t help thinking of that guy in the V-8 commercial slapping his forehead and saying, “I coulda had an OTL!”

From Dagogo (review is based on an earlier Mk 3 .1 model).
“The Atma-Sphere M-60 Mk 3.1 gives you great sound for the money. For many speakers, these amps will be about as good as it gets. Truth is, I found the sound on all three speakers I tried them with to only be bettered by amps that cost three and four times as much. Thus, you should consider them very highly recommended.”

From Soundstage
“Once connected the Atma-Spheres, they sounded open and fast, with good frequency extension at both ends of the audioband. My S-30 Mk.3 amplifier had led me to expect excellent deep bass, with good detail and tunefulness, and the M-60 Mk.3.1s didn’t disappoint. With Folia Rodrigo Martinez, performed by Jordi Savall and his band and ripped from their La Folia 1490-1701 (CD, Alia Vox AFA 9805), a large bass drum goes down to the middle of the 20-30Hz range. The M-60s reproduced the drum with plenty of impact and weight, but with more extension and detail than I sometimes hear even from solid-state amps.”

“A quote on Atma-Sphere’s home page says: “These OTL amps are arguably the most beautiful sounding amps in the world regardless of price.” You won’t hear any argument from me.”
From the Atma-Sphere Website description.
For years now the M-60 in its various forms has been the subject of the Soundstage!.com Hall of Fame Award, The Absolute Sound Golden Ear Award and Editor's Choice, with numerous accolades in the press and on the web.

The M-60 Mk. 3.3 continues that tradition with classic styling and its award-winning state-of-the-art performance. The amp operates class A and is unconditionally stable with reliability proven over many years. The power tubes are inexpensive, readily available and do not require any matching. Sporting a classic, open-chassis construction, the M-60 Mk. 3.3 sets the bar for hi-end amplifier performance.
• Balanced Differential Design®
• Class-A2 operation
• Patented Circlotronic® direct-coupled (OTL) output stage
• Automatic bias - no adjustment needed
• Built in VU meter for tube and output monitoring
• Easily mono strapped for greatly increased power
• Standby switch for long output tube life
• Uses only one gain stage for simplicity and clarity of sound
• Proprietary precision components used throughout
• Low-noise "star" grounding topology
• Fully hand-wired point-to-point electronics - no circuit boards!
• Stable with all input and load conditions
• Exclusively uses Octal-Triode based vacuum tubes For years now the M-60 in its various forms has been the subject of the Soundstage!.com Hall of Fame Award, The Absolute Sound Golden Ear Award and Editor's Choice, with numerous accolades in the press and on the web.


Original Boxes and Manual


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