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Sigma AMP2 TWO-CHANNEL AMPLIFIER
The Sigma series AMP2 is a 200W/Ch stereo amplifier utilizing switching technologies for both power supply and amplification stages. A Classé-designed switch mode power supply with Power Factor Correction makes over 1,000W of clean and stable power available while being both compact and efficient. A new class D amplifier topology provides wide dynamic range, smooth and extended frequency response and rich harmonic detail to yield stunning sonic performance. The efficiency of class D adds efficiency, low heat dissipation and relatively small size to the list of the AMP2’s attributes.
All tests un-weighted and 20Hz – 20kHz measurement bandwidth used.
10Hz – 20kHz, -1dB into 4Ω
200W rms into 8Ω 400W rms into 4Ω
<0.018% @ 1kHz Balanced Input
Peak Output Voltage
116V peak to peak, 41V RMS no load
116V peak to peak, 41V RMS into 8Ω
100kΩ Balanced / 50kΩ SE
Input level at clipping
>80 dB below fundamental into 8Ω Balanced
Signal to Noise Ratio
-100 dB at peak output into 8Ω (AES17)
177W @ 1/8th power into 4Ω
100V - 240V, 50/60Hz
Width: 17.00" (433mm)
Depth (excluding connectors): 14.57" (370mm)
Height: 3.75" (95mm)
22.0 lb (9.97 kg)
28.0 lb (12.70 kg)
Secrets of Home Theater and Hifi August 2015
StereoTimes Sigma SSP, AMP5 Review July 2015
TEDMag - Audiophile Home Theater Sigma SSP, AMP2 & AMP5 Review June - July 2015 (French)
TEDMag - Audiophile Home Theater Sigma SSP, AMP2 & AMP5 Review June - July 2015 (English)
Audio Esoterica Australia May 2015
Stereophile SIGMA Reviews May 2015
TEDMag Sigma Review April & May 2015 (French)
TEDMag Sigma Review April & May 2015 (English)
HemmaBio Review Sweden April 2015 (Swedish)
HemmaBio Review Sweden April 2015 (English)