Altec

A-428A

Amplifier, Pre

Main Details
Maker Altec Brand Altec Lansing Corporation Company
Function
Form Factor Part
Signal Path Analog Hardware
Made In United States
Date Produced 1957
Dimensions
(H × W × D)
Power Source 6.3VAC 0.75A, 250VDC 12mA
Frequency Response 20Hz-20kHz ±1dB
Notes 250A Console plug-in module. Available separately for custom installations.
Additional Specifications
Gain 40dB
Gain (Special Connections) 34dB
Source Impedance 30/150/250/600Ω
Load Impedance 75/150/300/450/600Ω
Output Level +20dBm
THD (50Hz-15kHz) 0.5%
Noise Level -124dBm
Tube Complement 5879 (x2), 6AQ5

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