The Sansui G-5700 is one of those ‘in between’ receivers that was made during the transition from analog to digital readouts. It has both a traditional analog dial as well as a digital tuner display. Built from 1979 until 1980 it produces 75 watts per channel into 8 ohms and total harmonic distortion of 0.03%.
The G-5700 has the characteristic Sansui large Volume and Tuning knobs set symmetrically in the center of the face plate. It also utilizes the square buttons used on earlier Sansui models. The dual analog/Digital displays make it a little strange looking but the backlit logo and model number at the left of the receiver is a nice touch.
The G-5700 has plenty of power for most speakers and a great tuner section as well. Overall, the sound from Sansui’s Pure Power DC stereos is very good. The volume control is aggressive. Just a minor turn of the knob and volume will increase dramatically. I’ve found this to be an issue with other Sansui models as well.
Some other features of Sansui’s G-5700 are:
- Quartz Locked Tuning
- Pure Power DC Amp Section
- LED Peak Power-level Display
- Defeat Bass/Treble Controls
- Two Tape Monitors
- FM Muting
- Two Sets of Speaker Outputs
- Power Protection Circuit
- 3 Gang Tuning Capacitor
- Phono and Tape/Aux inputs
- Dolby FM De-emphasis Selector
- Aux input for phone or MP3 player input
Look at that huge transformer. Pretty big for a 75 watt reciever.
There are some issues to be aware of with the G-5700. The MSM5540 display driver chip for the digital tuner tends to fail resulting in no display or a partial display of the station selected. The chip can be replaced but it has 40 pins so the original is not easy to get off the circuit board. If you do replace it be sure to utilize a DIP40 socket for the new chip which will make it easier to replace in the future if need be. When looking to buy a G-5700 be sure to power it on and wait to see if the green protection light comes on. Then check to make sure that the digital display works properly. You can also check to see if the analog and digital displays are matched. This goes for other Sansui G-X700 models as well.
Also, the venting system is not designed very well which leads to the unit running hotter than normal. So, be careful if you’re stacking it with other components.
Overall, the Sansui G-5700 is a great receiver when everything is working properly. Especially if you don’t mind the analog/digital mix of displays. Personally I think it’s kind of cool and serves as an interesting historical marker for when things began to move toward the digital age.
The G-5700 sells for about $400 to $600 depending upon condition.