Altec Lansing

A-340A (Rev. 2)

Amplifier, Power

Main Details
Maker Altec Lansing Brand Altec Brand Altec Lansing Corporation Company
  • 1 × Channel
Signal Path Analog Hardware
Made In United States
Date Produced 1955-1957
(H × W × D)
Weight 35lbs (Shipped)
Power Source 117VAC, 60Hz 160W
Frequency Response 5Hz-100kHz ±1dB (1W), 30Hz-20kHz ±0.25dB (40W)
Notes Updates to transformers
Additional Specifications
Power Output 40W
Gain 66.5dB
Input Sensitivity 1.4V
Input Impedance 200kΩ
THD 0.5%
IMD (40Hz, 2kHz, 4:1) 1%
SNR 95dB
Load Impedance 8/16Ω
Output Impedance (16Ω) 0.52Ω
Damping Factor (8Ω) -4.0 to +4.5 Continuously Adjustable
Output Tube 6550
Tube Complement 12AY7, 12AU7, 6550 (x2), 5U4GB, OA3/VR75
MSRP (1955) $159


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