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Classé Sigma AMP5 Five Channel Power Amplifier

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€3,380.00 / each
SKU: Classé Sigma AMP5


Quick Overview:


The Sigma series AMP5 is a 200W/Ch five-channel amplifier derived from the AMP2, but with necessary part and layout changes to accommodate its five-channel architecture. Like the AMP2, it utilizes 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 AMP5’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 All channels driven
400W rms into 4Ω Any two channels driven* 

Harmonic Distortion


0.018% @ 1kHz All channelsdriven 
to 1/8th power into 8Ω

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 SE

Signal to Noise Ratio


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

Rated power


200W @ 1/8th power into 8Ω 

Mains voltage


100V - 240V, 50/60Hz

Overall Dimensions


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

Net weight


23.1 lb (10.48 kg)

Shipping weight


30.0 lb (13.61 kg)

*each channel supports 400W output into 4 ohms but the AC Mains/power 
supply cannot support all channels driven simultaneously at this level, which 
would require over 2,500W and only occur under a special test condition. 
Every channel easily drives lower impedance loads.


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