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 Class -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 AMP5s attributes.
All tests un-weighted and 20Hz 20kHz measurement bandwidth used.
10Hz 20kHz, -1dB into 4OHMS
200W rms into 8OHMS All channels driven
400W rms into 4OHMS Any two channels driven*
0.018% @ 1kHz All channels driven to 1/8th power into 8OHMS
Peak Output Voltage
113V peak to peak, 40V RMS no load
113V peak to peak, 40V RMS into 8OHMS
100kOHMS Balanced / 50kOHMS SE
Input level at clipping
>80 dB below fundamental into 8OHMS SE
Signal to Noise Ratio
-100 dB at peak output into 8OHMS (AES17)
Rated power consumption
200W @ 1/8th power into 8OHMS
100V - 240V, 50/60Hz
Depth excluding connectors: 370mm
*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.