Heathkit

W-3AM

Amplifier, Power

Main Details
Maker Heathkit Brand Heath Company Company Daystrom, Incorporated Company
Function
Additional Model ID Williamson Type Amplifier W3-AM, W-3A
Channels/Tracks
  • 1 × Channel
Signal Path Analog Hardware
Made In United States
Date Produced 1957
Dimensions
(H × W × D)
  • Amplifier
  • Power Supply
Weight 29lbs (Shipped)
Power Source 105-125VAC, 50/60Hz 120W
Frequency Response 20Hz-80kHz ±1.5dB (1W), 20Hz-20kHz ±0.5dB (20W)
Additional Specifications
Output Power 20W
Peak Output 36W
THD (20W) 1%
IMD (20W) 1.2%
Impedance Load 4/8/16Ω
SNR (20W) 85.3dB
Feedback Factor 18dB
Damping Factor 14
Output Tube 5881
Tube Complement 6SN7GT (x2), 5881 (x2), 5V4G
Output Transformer Acrosound TO-300
MSRP (1957) $49.75

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