Heathkit

W-4M

Amplifier, Power

Main Details
Maker Heathkit Brand Heath Company Company
Function
Additional Model ID Williamson Type Amplifier W-4
Channels/Tracks
  • 1 × Channel
Signal Path Analog Hardware
Made In United States
Date Produced 1954
Dimensions
(H × W × D)
Weight 28lbs
Power Source 105-125VAC, 50/60Hz 120W
Frequency Response 10Hz-100kHz ±1dB
Additional Specifications
Output Power 20W
THD (20Hz-20kHz, 5W) 0.5%
IMD (60Hz:3kHz, 5W) 0.5%
Impedance Load 4/8/16Ω
Output Tube 5881
Tube Complement 6SN7GT (x2), 5881 (x2), 5V4G
Output Transformer Chicago Transformer Company BO-13
MSRP (1954) $39.75

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