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Classé Sigma AMP2 Stereo Power Amplifier

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€3,380.00 / each
SKU: Classé Sigma AMP2


Quick Overview:


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.

Frequency response


10Hz – 20kHz, -1dB into 4Ω

Output power


200W rms into 8Ω 400W rms into 4Ω

Harmonic Distortion


<0.018% @ 1kHz Balanced Input

Peak Output Voltage


113V peak to peak, 40V RMS no load 
113V peak to peak, 40V RMS into 8Ω

Input Impedance


100kΩ Balanced / 50kΩ SE

Voltage gain


29 dB 

Input level at clipping


1.4Vrms Balanced/SE



>80 dB below fundamental into 8Ω Balanced

Signal to Noise Ratio


-100 dB at peak output into 8Ω (AES17)

Rated power


177W @ 1/8th power into 4Ω

Mains voltage


100V - 240V, 50/60Hz

Overall Dimensions


Width:  (433mm)
Depth (excluding connectors): (370mm)
Height: (95mm)

Net weight


22.0 lb (9.97 kg)

Shipping weight


28.0 lb (12.70 kg)


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