Sansui G-7700 Receiver Biasing @davismv
Sansui G-7700 Receiver Biasing  @davismv
Uploaded March 2024 | Updated September 2026, 1 week ago
1979-1980 Sansui G-7700, 120WPC. It’s truly an analog tuner inside with a circuit showing a digital representation of the station tuned.

Re-biased this tonight and it sounds great. Like a lot of newer receivers with less hours in my collection, the unit was running hotter than spec so I adjusted things down to factory settings.

What I find interesting is that there are two models higher than this, the G-8700 and G-9700. If my G-7700 is 120WPC, then the others are much higher and this really is the end of the line for consumer grade high watt units.
Sansui G-7700 Receiver BiasingHarmon/Kardon 150+ Receiver from 1971 power up, 70WPCTechnics SA-828 1981 Receiver 100WPCPioneer QX-747 Receiver, 40WPC in 2 Channel Mode, 1974Kenwood Nine G - Re-Biased - 80WPCTechnics SA-550 Receiver from 1984, TV Tuner SoundTechnics SA-626 Receiver From 1981 65WPC DebutMarantz Model 140 75WPC Boat Anchor Re-BiasedAmpex 1968 AG-440 Professional Reel to Reel Demo with Pioneer VSX-9900S Receiver.Teac 3300-10 Reel to Reel from 1974Optimus STA-300 15WPC Receiver from 1991Pioneer SX-1050 Receiver 120WPC 1976 - Power Supply, Protection Circuit, and Driver Board Recap.
Mark Davis |

Sansui G-7700 Receiver Biasing

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