ST-85 Stereo Amplifier Data Specifications
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Vacuum Tube Complement
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4 x EL34, 4 x 12AT7
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Output Power
20 Hz 25 kHz ± 0.1dB < 3% THD
(Stable to 2W)
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into 4W
Tetrode = 90 watts
into 8W
Tetrode = 80 watts
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Small signal frequency response
(< 0.2% THD @ 1W)
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1 - 75 kHz -3dB
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Class of output operation
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AB1
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Inputs / Outputs
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Single-ended RCA /
1 pair 5 way binding posts
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Input Sensitivity / Impedance
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0.7 V / 100KW
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Output Impedance
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1.55W
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Power Consumption
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Idle = 140W
Full Power = 500W
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Dimensions
W x D x H
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15.75 x 12.5 x 7 inches
40 x 31.75 x 17.75 cm
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Weight per unit
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45 lbs (20.5 Kg) fully packed
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