5-channel power amplifier of the American company Parasound 5250

Specifications
THX Ultra2 certification
Fully discrete circuit with two toroidal transformers
RMS output power:
250 watts RMS per channel for five 8 ohm speakers
385 watts RMS per channel for five 4 ohm speakers
45 A peak current per channel
Input resistance: 33 kΩ
Damping factor: more than 150 at 20 Hz
Frequency characteristics:
Range: 20 Hz - 50 kHz, + 0 / -3 dB, 1 W
THD (harmonic distortion coefficient)
0.025% at the maximum level of the input signal
0.02% at medium volume level
Intermodulation distortion: 0.05%
Signal / noise ratio
114 dB, IHF A-weighted, 106 dB unweighted
93 dB at 2.828, IHF A-weighted, 84 dB at 2.828 unweighted
Input sensitivity:
1 v / 28.28 v, THX reference level
1.6 V at the maximum level of the input signal 500 mv-5

Features of operation and design

High-performance operation with a low degree of heating
DC servo drive and relay protection scheme
Automatic on / off with a 12 V trigger
Automatic switching on / off using an audio signal from
adjustable sensitivity
Gold-plated RCA connectors
Universal 24-karat gold-plated terminals for speaker systems
Ground loop break switch
Indicators of standby mode, channel status, high temperature
Dimensions (W x D x H): 438 mm x 483 mm x 194 mm
Feeding
110 – 120 V / 220 -240 V, 50 – 60 Hz
1 tu in standby mode; Power consumption 2500 W
Weight: 31.4 kg