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Sigma AMP5 FIVE-CHANNEL AMPLIFIER
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 4ΩOutput 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 8ΩPeak Output Voltage
116V peak to peak, 41V RMS no load
116V peak to peak, 41V RMS into 8ΩInput Impedance
100kΩ Balanced / 50kΩ SEVoltage gain
29 dBInput level at clipping
>80 dB below fundamental into 8Ω SESignal to Noise Ratio
-100 dB at peak output into 8Ω (AES17)Rated power
200W @ 1/8th power into 8ΩMains voltage
100V - 240V, 50/60HzOverall 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)*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.PRODUCT REVIEWS
Soundstage AMP5 March 2016Home Theater Review September 2015Home Theater Review September 2015 (Website Link)Secrets of Home Theater and Hifi August 2015StereoTimes Sigma SSP, AMP5 Review July 2015TEDMag - 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 2015Audioholics Review May 2015Stereophile SIGMA Reviews May 2015HemmaBio Review Sweden April 2015 (Swedish)HemmaBio Review Sweden April 2015 (English)Blu-ray Definition Review April 2015