Atma-Sphere manufactures or has manufactured the following equipment (click to expand models list):Dynamic Speakers
Atma Sphere web site (December 2003): We are the world's premiere OTL and triode amplifier manufacturer. Electronics for those who prefer music! All our amplifiers feature Balanced Differential Design. Balanced Differential Design is a total design philosophy. Our Circlotronic circuitry offers the simplest audio circuit path from the source to the loudspeaker. The year 2003 is our twenty-fifth year! We are the oldest manufacturer of Output TransformerLess (OTL) and triode amplifiers worldwide.
Atma-Sphere Owner's Group An independent organization, the site features a BBS, reviews, news, articles and more. To my knowledge the very first independant owner's group for a high end audio manufacturer in the world.
Ralph designed and patented the music producing circiut which makes our products the best in the world. Atma-Sphere's claims to fame are:
- the world's first reliable OTL!
- the world's first fully balanced OTL
- the first all triode fully differential zero feedback tube amplifier
- the first commercial tube amplifier with only one stage of gain
- and all in the same place at the same time.
We also make unique preamps:
- the world's first fully differential zero feedback all tube preamp
- the world's first all-tube preamp with a direct-coupled balanced output
- the world's only all-tube preamp to support the 600 Ohm balanced standard.