CLASSE Sigma Amp5 1000-watt 5-channel balanced Amp


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  • $2,499.99

  • $5,000.00

CLASSE Sigma Amp5 1000-watt 5-channel balanced Amp


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: 17.00" (433mm)
Depth (excluding connectors): 14.57" (370mm)
Height: 3.75" (95mm)

Net weight

23.1 lb (10.48 kg)

Shipping weight

30.0 lb (13.61 kg)