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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 6550

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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