Atma-Sphere S-30 Mk. 3.3
$5,100.00
Full Disclosure: As found on AI Search
OTL (Output Transformer-Less) amplifiers are considered dangerous primarily due to risks to your loudspeakers if a failure occurrs the loudspeakers will be damaged. Also potential for severe electrical shock, as they lack the protective output transformer, allowing catastrophic failures (like high DC voltage) to directly fry speakers or electrocute users if internal wiring or mains polarity is faulty.
0% – 3 Year Financing Available!!
Demo Available
Atma-Sphere S-30 Mk. 3.3 Amplifier
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.
Description
Full Disclosure: As found on AI Search
OTL (Output Transformer-Less) amplifiers are considered dangerous primarily due to risks to your loudspeakers if a failure occurrs the loudspeakers will be damaged. Also potential for severe electrical shock, as they lack the protective output transformer, allowing catastrophic failures (like high DC voltage) to directly fry speakers or electrocute users if internal wiring or mains polarity is faulty.
0% – 3 Year Financing Available!!
Demo Available
Atma-Sphere S-30 Mk. 3.3 Amplifier
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
Output power
30 watts per channel into 8 Ω load
45 watts per channel into 16 Ω load
Impedance
Input Impedance: 100 KΩ single-ended, 200 KΩ balanced
Output Impedance: 7 Ω
Input
3 V sensitivity
RCA and XLR true balanced input
Tube complement
10 x 6AS7G output tube
6 x 6SN7 driver tube
Gain
23dB ( for 8 Ω )
Power Bandwidth
2Hz-75KHz within ½ dB
Frequency response
( 1 watt, open loop ) 20 Hz squarewave Tilt; unmeasureable
1Hz-200KHz within 3 dB
Hum and noise
Less than -75db below 1 watt, -95db below full power (30 watts)
Distortion
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
600 V/µs
Feedback
2 dB
Power consumption
400 watts
Dimensions
13″ deep x 17″ wide x 8″ tall ( 33 x 43 x 20 cm )
Weight
( without tubes ) 24 lbs ( 10.9 kg )
Warranty
Three year general coverage
One year for output tubes
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