ATMA-SPHERE S-30MK 3.3 - THE FINEST TRIODE, PURE CLASS A, STEREO VACUUM TUBE AMPLIFIER AT ANY PRICE!
A fast tight bass, warm fluid mids, super smooth highs. Very three dimensional, holographic. Very Musical.
The S-30 is the unchallenged state-of-the-art in low power vacuum tube amplifiers. With its simplicity of operation, small footprint, and all the features of our larger amps, the S-30 represents the high-water mark of compact OTL design.
For audiophiles who seek the ultimate in amplifier design and are realistic about their budget, the S-30 gives you the same precision and sound quality that Atma-Sphere is known and recognized for. Featuring automatic bias and a large VU meter, operation is elegantly simple.
And because it utilises decades-proven patented handwired circuitry, it is stable with any load and both performs and sounds better than any single-ended amplifier ever produced, let alone conventional push-pull designs. Its fully-balanced design and proven class-A triode operation make the S-30 the ideal choice for the discriminating audiophile.
Less than -75db below 1 watt, -95db below full power (30 watts)
Total Harmonic Distortion ( THD ) typically 1% at full power
Intermodulation ( IM ) distortion typically under .04% at full power
Phase shift less than 1° @ 20KHz
Output section risetime
Three year general coverage
One year for output tubes
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
Re: Atma -Sphere S-30 MK 3.3 Stereo Amplifier
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