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 those who seek the ultimate in amplifier design the S-30 gives you the same precision and sound quality for which Atma-Sphere is known. Featuring automatic bias and a large VU meter, operation is elegantly simple.

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.

• 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

SPECIFICATIONS