Heathkit

AA-91

Amplifier, Power

Main Details
Maker Heathkit Brand Heath Company Company Daystrom, Incorporated Company
Function
Channels/Tracks
  • 1 × Channel
Signal Path Analog Hardware
Made In United States
Date Produced 1960
Dimensions
(H × W × D)
Weight 26lbs (Shipped)
Power Source 117VAC, 50/60Hz, 90W 160W (Max)
Frequency Response 20Hz-20kHz ±1dB
Notes Updated W-7A
Additional Specifications
Output Power 55W
IHFM Music Power Output (0.7% THD, 1kHz) 67W
Impedance Load 4/8/16Ω/70.7V
Input Sensitivity 2V
THD (20Hz-20kHz, 55W) 2%
IMD (4:1, 60Hz:6kHz, 62W) 1%
SNR 80dB
Damping Factor Unity or 20 User Selectable
Output Tube EL34
Tube Complement EL34 (x2), 6AN8
MSRP (1961) $59.95

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