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SIGMA Mono

Sigma MONO MONAURAL AMPLIFIER

The Sigma MONO is the reference design for the proprietary Classé amplifier platform introduced in the Delta series CA-D200 and Sigma AMP2 and AMP5 models. With completely separate chassis for each channel, the monaural amplifier architecture eliminates the possibility of crosstalk between channels and allows speaker cable lengths to be held to a minimum to minimize losses. It efficiently delivers a prodigious 350W into 8Ω and 700W into 4Ω, suitable for the most difficult speaker loads and critical listening applications.

Sigma MONO MONAURAL AMPLIFIER

All tests un-weighted and 20Hz – 20kHz measurement bandwidth used.
Frequency response   10Hz – 20kHz, -1dB into 4Ω
Output power   350W rms into 8Ω 700W rms into 4Ω
Harmonic Distortion   <0.012% @ 1kHz driven to 1/8th power into 8Ω
Peak Output Voltage   151V peak to peak, 53.4V rms no load
151V peak to peak, 53.4V rms into 8Ω
Input Impedance   100kΩ Balanced / 50kΩ SE
Voltage gain   29 dB
Input level at clipping   1.8Vrms Balanced/SE
Intermodulation
Distortion
  >80 dB below fundamental into 8Ω Balanced
Signal to Noise Ratio   -109 dB at peak output into 8Ω (AES17)
Standby power consumption   .5W @ 230 V
Rated power
consumption
  130W @ 1/8th power into 4Ω
Mains voltage   90V - 264V, 50/60Hz
Overall Dimensions   Width: 17.00" (433mm)
Depth (excluding connectors): 14.57" (370mm)
Height: 3.75" (95mm)
Net weight   22.0 lb (10.00 kg)
Shipping weight   29.0 lb (13.18 kg)

Sigma MONO MONAURAL AMPLIFIER

Sigma MONO Amplifier - Owners Manual  -  English | Deutsch
Sigma MONO Amplifier - Info Sheet  -  English | Français
Sigma MONO Amplifier - 2D Drawing.pdf