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S-400 Reference Stereo Amplifier

Detailed Information  |  Feature Summary

 

Vacuum Tube Complement (both channels) 2 x 12AT7, 2 x 6350, 12 x 6550C
Maximum Output @ Less than 3% distortion Into 4 ohms Tetrode 400W, Triode 200W

Into 8 ohms Tetrode 300W, Triode 150W

Small Signal frequency response +0 -3 dB (10Hz -125 KHz)
Inputs Balanced XLR (2), Single ended RCA (2)
Output 5-way Binding Post (2 pairs)
Class of output operation AB1
Optimal Load Setting 5 ohms
Input Sensitivity for Full Output 2.2 Volt
Input Impedance  57K ohms
Balanced Input Common Mode Rejection Ratio 60 dB
Power Consumption 480 Watts @ idle, 2500 Watts @ full power
Zero Signal Noise > 100 dB (all frequencies)
Secondary DC Volt Fuse
Ratings

Plate 2.5A Fast 600V

Screen 3/4A Fast 600V

AC Fuse ratings

Logic: 0.4 Amp Slo Blo 120V, 220V, 240V

B+: 120V 20 Amp Slo Blo, 240V 10 Amp Slo Blo

Input: 120V 2 Amp Slo Blo, 240V 1 Amp Slo Blo

Filament: 120V 2 Amp Slo Blo, 240V 1 Amp Slo Blo

Dimensions W x D x H 11.5 x 24 x 24 inches (29 x 61 x 61 cm)
Weight 

Shipping Weight

Net: 220 lbs/100 kg

330 lbs/159 Kg, packed in crate.

Crate Dimensions: 34 x 20 x 40 inches

 

Detailed Information S-400 Reference Stereo Amplifier

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