Amplifier, Pre

Main Details
Maker Altec Brand Altec Lansing Corporation Company
Form Factor Part
Signal Path Analog Hardware
Made In United States
Date Produced 195?
(H × W × D)
Weight 4.5lbs
Power Source 6.3VAC 1.2A, 270VDC 70mA
Frequency Response 20Hz-20kHz ±1dB
Notes A-429B with minor component changes and changed model number to fit with revised nomenclature structure.

250A Console plug-in module. Available separately for custom installations.
Additional Specifications
Gain 50dB
Source Impedance 30/50Ω, 125/150Ω, 250/300Ω, 500/600Ω
Load Impedance 125/150Ω, 500/600Ω
Output Level (Line) +30dBm
Output Level (Monitor) +39dBm
Output Level (Monitor) 8W
THD (Line, +30dBm, 30Hz-15kHz) 0.5%
THD (Monitor, +39dBm, 50Hz-15kHz) 1%
Noise Level -60dBm
Tube Complement 12AY7, 6AQ5 (x2)


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