Atmasphere Class D monoblocks, 2 x 100 Watts
Notice of price increase: Due to an increase in parts costs as of January 2024 the MSRP will increase to $6,120 per pair.
The Atma-Sphere Class D project has been in the works since 2017. The goal was to expand on the positive attributes of the existing line of OTL amplifiers, which have been getting great reviews and awards in the high end press for the last 30 years. The result is a solid state amp that has all the smoothness in the mids and highs that you expect from an excellent tube amp but with considerably lower distortion, output impedance and obviously higher efficiency. Like the OTL amps, this one has a very nice first watt!
The Class D is a monoblock design based on GaNFET output devices and accepts both single-ended and balanced inputs. The circuit is designed and manufactured by Atma-Sphere - it does not use anyone else's modules. The power supply employs a toroidal power transformer and has over-current protection to keep the amplifier safe in case of a short at the speaker terminals.
This offer is for a pair of monoblock amplifiers, new in box, with full manufacturer warranty.
THERE IS NO TRIAL PERIOD AVAILABLE WITH THIS OFFER.
Features
Single-ended and True Balanced input
GaNFET output transistors
Rugged chassis
Monoblock
No adjustments needed
Exclusive Atma-Sphere class D module
Precision components used throughout
Low-noise even on horn speakers
Over-current protected
Stable with all input and load conditions
Specifications
Output power
100 watts per channel into 8 Ω
200 watts per channel into 4 Ω
Input Impedance
100 KΩ balanced/single-ended
Output Impedance:
~0.010 Ω
Input
2.15 Vrms for full output
Gain
22dB
Power Bandwidth
1Hz-20KHz
Distortion
Total Harmonic Distortion less than 0.1% at full power.
IM distortion less than .04% at full power.
Feedback
35 dB
Power consumption
5 watts at idle (per channel)
Dimensions & Weight
13" deep x 11" wide x 3" high (33 x 28 x 8 cm) per chassis
14 lbs (6.35 kg), per chassis
Warranty
Three year general coverage