Futterman H-3A power amplifier Specifications

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Description: All-tube output-transformer-less stereo power amplifier. Output: 90Wpc with 16-ohm load. Frequency response: 5Hz–90kHz, +0, –0.5dB; –3dB at 200kHz. IM distortion: 0.05% at 90W (continuous sinewave) into 16 ohms. Damping factor: 200. Stability: Unconditionally stable with any kind of load. S/N ratio: better than 93 dB below 90 watts. Sensitivity: 2.0V in for 90W out. Input impedance: 270l ohms.
Dimensions: 17" W by 1O.25" D by 7.5" H. Weight: 29 lb. (Relatively light weight due to absence of output transformers.)
Price: $288, including cage (1967); no longer available (2019).
Manufacturer: Harvard Electronics Co., New York, NY 10025 (1967). Company no longer in existence (2019).

Harvard Electronics Co.
New York, NY 10025 (1967)
Company no longer in existence (2019)
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