400 Tube

About the 400 Tube

The Fisher 400 is a vintage tube stereo receiver produced from 1964 to 1968 by Fisher Radio Corporation. It combines a sensitive FM multiplex tuner with a dual-channel 60 watt power amplifier (25 watts per channel into 8 ohms). The receiver features the Fisher Golden Synchrode design with multiple tuned circuits for excellent selectivity and sensitivity, a time-division multiplex converter for minimal noise and distortion, and a magic eye tube for signal strength indication. Controls include tuning, power/volume, balance, treble, bass, and function selector for tape, aux, FM mono/stereo, and phono inputs. It uses four 7868 Novar type tubes in a push-pull configuration for audio output, delivering rich, warm, and clear sound. The unit includes slider switches for tape monitor, speaker on/off, high-frequency filter, and loudness contour, plus a headphone jack. The receiver is housed in a walnut veneer cabinet with a gold metal grille for ventilation. It supports speaker impedance selection (4, 8, or 16 ohms) and has multiple input/output jacks for tape, phono, and auxiliary devices. The Fisher 400 is regarded as a simplified but sonically superior alternative to the Fisher 500 and 800 models, prized for its vintage charm and tube audio quality.