Atma-Sphere Atma-Sphere MA-1

The best tube amplifier worldwide, 2 x 140 watts OTL monoblocs, Mk 3.3

Recipient of The Absolute Sound's prestigious "Golden Ear Award" in 2000, the MA-1 enjoys an enviable reputation. Now the Mk. 3.3 series builds on proven technology. An improved output section and enhanced driver circuit contribute to superior low-level detail, smoother sound, wider bandwidth and AC power immunity. The rugged, non-magnetic chassis features classic looks with superior layout. Setup of the amplifier is simple with it's automatic biasing system. The controls and switches are ergonomic without sacrificing performance. 

The MA-1 is extraordinary in every way. Not only is normal operation easy on the vacuum tubes, the effect of a tube failure on the unit is entirely inconsequential. Despite its extreme performance, the MA-1 is known for remarkable ease of setup, ease of operation, day-to-day consistency and of course extreme musicality. 

Featuring our new custom wire, V-Cap Teflon coupling caps, custom resistors, and all the other extras for which we are known, the MA-1 shines as an example of why our amplifiers are the best amplifiers worldwide, regardless of cost.

FEATURES

- Balanced Differential Design®
- Class-A operation- Patented Circlotronic® direct-coupled (OTL) output stage- Dual-mono chassis construction- Automatic bias - no adjustment needed- Built in VU meter for tube and output monitoring- Easily monostrapped for greatly increased power- Uses only one gain stage for supreme 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- Classic open chassis construction with Wrinkletex™ finish- Three-year general coverage warranty, - One year warranty on output tubes