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Fisher 400

FM Vacuum Tube Stereo Receiver (1963-65)

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Fisher 400


The new Fisher 400 incorporates on a single chassis a highly sensitive FM multiplex tuner, a master audio control with a full complement of controls and features, and a dual channel, 60 watt power amplifier with ample reserve power for full room volume with any pair of loudspeakers.

Many new advances in the technology of music reproduction have been included in the 400 design.

The front end for example is of the new Fisher Golden Synchrode design, employing a specially developed RF amplifier tube combined with three tuned circuits for maximum selectivity, sensitivity and rejection of unwanted signals.

Three wideband IF stages are used, followed by a radio detector that is linear over an extremely wide range.

The multiplex converter is the superior time-division type, utilising two balanced diode bridges and a synchronous oscillator acting together as electronic switches.

The circuit reduces noise and distortion to the theoretical minimum and achieves the greatest possible stereo separation.

The famous Stereo Beam indicator signals instantly whenever a station transmits a multiplex stereo program.


Tuning range: FM

Power output: 25 watts per channel into 8Ω (stereo)

Frequency response: 25Hz to 25kHz

Total harmonic distortion: 0.8%

Input sensitivity: 4.4mV (MM), 440mV (DIN), 280mV (line)

Signal to noise ratio: 80dB (line)

Channel separation: 50dB (line)

Year: 1964

Price: USD $329.50 (1963)


20000- service manual   English -

instruction/owners manual   English -

10001-19999 service manual   English -

48001- service manual   English -

20001-29999 service manual   English - discoroboto

30000 - service manual   English - discoroboto

48001- schematic   English -

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re: 400 manual discrepancies and work around.

FISHER started serial numbers on new TUBE units from the TA-600 and newer with the number 10001. NOT 1, 10, 100, 1000. 10001 is the LOWEST NUMBERED 400 that was produced.

The 30001 and up manual is incorrect. I have a thread on AK doing a survey of serial numbered 400's to determine how many RF/IF tubes, and which suffix output's are on the unit. The demarkation between early version (5 total RF/IF tubes; suffix "A" output transformers) and later version (6 total RF/IF tubes; and AX suffix output transformers) is 48001. It has been determined that the 30001 manual is actually a misprint of the 48001 and up manual. The 30001 to 47999 serialed units are early version units.

Serial 10001-19999 use the same serialed manual

Serial 20000 to 29999 use either 20000 and up or the 20001-29999 manual DISREGARD THE SCHEMATIC at THE END OF THE 20000 and UP MANUAL. IT's for the 48001 and up.

Serial 30001-47999 use the 20001-29999 manual for now until we can locate (if possible) a correctly indicated manual for that series.

Serial 48001 and up, use the same serialed manual.


re: 400

Has anyone tried connecting a powered subwoofer to the Fisher 400 center channel output? Seems like it should work.

Fisher 203

Does anyone have a Owner Manual for a Fisher 203 Receiver?

Fisher 400 Manual

Does anyone have a Service Manual for a Fisher 400 (chassis serial number 40,000 - 49,999)?

goldorak's picture

Fisher 400 manual

I have one that says «chassis serial numbers beginning 48001»

Fisher 400 manual

I need a copy of the earlier manual, the one for SNs 1 through 19999. Anyone have one?

YES! I have been looking

YES! I have been looking everywhere for this!

WOOT!! thx for making this


thx for making this available, I have a 400 I need to get working again


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