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Atma-Sphere
http://atma-sphere.com/en/index.html
Atma-Sphere music systems, Inc. is a small company in Saint Paul, MN that has been making world-class vacuum tube music amplifiers since 1976. We are known for our unique approach to circuit design, resulting in multiple patents and the creation of the first, truly reliable Output TransformerLess (OTL) amplifiers.
Atma Sphere – USA Tube Audio
https://www.usatubeaudio.com/brand/atma-sphere/
Atma Sphere. Atma-Sphere music systems, Inc. is a small company in Saint Paul, MN that has been making world-class vacuum tube music amplifiers since 1976. We are known for our unique approach to circuit design, resulting in multiple patents and the creation of the first, truly reliable Output TransformerLess (OTL) amplifiers.
www.thetubestore.com - Atma-Sphere Amps
https://www.thetubestore.com/shop-by-amp/home-audio-tube-packages/atma-sphere-amps
Atma-Sphere Amps. Using our knowledge and experience, we've selected vacuum tubes to create Upgrade, Premium, and Ultimate tube kits/packages that will work great in your amplifier. Re-tubing your Atma-Sphere amp has never been easier…. More Details. Atma-Sphere M-60 Amp. Atma-Sphere MA-1 Amp. Atma-Sphere MA-2 Amp. Atma-Sphere MA-3 Amp.
Atma-Sphere Novacron
http://www.atma-sphere.com/en/novacron.html
Just over twenty years later, Atma-Sphere is pleased to announce the return of the Novacron, now updated to Mk 3.3. In 1991, not only was the amplifier on the cutting edge of high-fidelity sound reproduction, it was an outstanding example of aesthetic industrial design. Today, the new Novacron combines the characteristics of the 6C33C triode ...
Atma-Sphere Tube Amplifier Forum | What's Best Audio and ...
https://www.whatsbestforum.com/forums/atma-sphere-tube-amplifier-forum.341/
Learn from Ralph Karsten the Atma-Sphere founder/designer and discuss with fellow owners. ... This is THE place where audiophiles and audio companies discuss vintage, contemporary and new audio products, music servers, music streamers, computer audio, digital-to-analog converters, turntables, phono stages, cartridges, reel-to-reel tape machines ...
ATMA-SPHERE M-60 MK. 3.3 OTL MONOBLOCK AMPLIFIERS - Hi …
https://hifiplus.com/articles/atma-sphere-m-60-mk-3-3-otl-monoblock-amplifiers/
A great feature for owners of Atma-Sphere amplifiers. I had a chance to catch up with Ralph at the last US pre-COVID-19 audio show in Tampa in February 2020 and I asked him if he would be interested in a review of one of his amp designs. The room was featuring his Novacron amplifiers featuring the 6C33C Triode power tubes. A favourite amp of mine.
Atma-Sphere “UltraViolet” UV-1 Preamplifier - The …
https://www.theabsolutesound.com/articles/atma-sphere-ultraviolet-uv-1-preamplifier
Jan 21st, 2016. A. A. A. Designer Ralph Karsten recounts that the UV-1 preamp is based on a circuit that has been percolating at Atma-Sphere for many years but has never before been commercialized. Bowing to feedback from friends and associates who felt it was something special, Ralph finally put the UV-1 into production in 2014.
Atma-Sphere | Shop & Research
https://www.audiogon.com/brands/atma-sphere
Shop and research Atma-Sphere on the largest hi-fi marketplace: listings for sale, forum discussions, and systems featuring Atma-Sphere
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