Sansui 8080 DB

Sansui 8080 DB Front

 

The Sansui 8080 DB came to market at around 1975 and lasted until around 1978.  It was price at about $650.00 and was a popular model for Sansui. It has the classic styling of a mid 1970's receiver with a black and brushed aluminum face plate and dark dial meter with blue and white meters. The DB version of the 8080 of course had built in Dolby noise reduction.

 

Sansui 8080 DB Meter

 

The Sansui 8080 DB is essentially the same stereo as the 9090DB but with 85 watts output per channel instead of 110. It's a really well built receiver. You'll hear some talk about which one sounds better but they are almost identical inside.

 

Sansui 8080 DB Knob

 

Here is what one user said about the two receivers:

"The 8080DB uses exactly the same driver board as the 9090DB so the only difference in the amplifier section is a little less power and 4 output transistors. The amp sections should have no discernible difference in sound. They also both use exactly the same pre-amp section except for the crossover/defeat switches in the tone controls. The circuitry is identical otherwise. Since you can't defeat the tone controls on the 8080DB, there may always be a little coloration to the sound because there will be some variation to where the 0 point is on the tone controls. As a result you may always be adding or subtracting a little tone."

 

 

 

Sansui 8080 DB Lamps

 

The 8080 DB is heavy and weighs in at around 46 pounds.

Here are some of its other features:

  • Built-in Dolby Processor
  • Triple Tone Controls
  • Four Accurate Meters
  • Frequency response: 10 Hz to 30 kHz
  • Total harmonic distortion: 0.1%
  • Damping factor: 30
  • Input sensitivity: 4mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line)
  • Signal-to-noise ratio: 70 dB (MM), 80 dB (DIN), 80 dB (line)
  • Channel separation: 50 dB (MM), 50 dB (line)
  • Output: 150mV (line), 30mV (DIN), 0.775V (Pre Out)

 

Sansui 8080 DB Inside

 

There are some issues known to this receiver. The driver board, RF power supply board and Dolby board all have common problems. The driver board has problematic resistors while the RF board runs very hot which can cause problems and the Dolby board tends to get cracks in the solder traces. The DB board cannot be bypassed and all signals run through it so if it has problems then your receiver will not work properly.

 

Sansui 8080 DB Inputs

 

Vintage Sansui receivers have always been popular and, therefore, somewhat pricey. The Sansui 9090DB can sell for over $1300. If you don't want to spend that much but want performance that is just about as good then you should consider the 8080DB. It sells for around $500 in very good working condition.

 

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Sansui G-4700

Sansui G-4700

 

This Sansui G-4700 is from their line of Pure Power DC receivers from the late 1970's. It was at the bottom of their G-X700 line but still produced a respectable 50 watts per channel. Sansui had other budget oriented receivers at the time such as the G-301 and G-401 so the G-4700 was really in the middle of their performance lineup. It retailed for about $430.

 

Sansui G-4700 Left

 

The G-X700 line all featured a symmetrical layout with two big knobs a the center bottom of the face plate that control volume and tuning. It also has push buttons for FM Mode, Subsonic Filter, Loudness and Tape Monitor

 

Sansui G-4700 Right

 

The Sansui G-4700 looks alright when it's powered off but hit the power switch and dim the lights and you're in for a treat. It is one of the better looking receivers from the late 1970's when lit up. Interestingly it has both digital and analog tuning displays. FM tuning is digitally quartz locked to prevent drift. The left and right peak power meters are also digital.

 

Sansui G-4700 Lamps

 

Inside, the G-4700 is laid out well. The design features Sansui's exclusive DC technology in the power amplifier section. Phase distortion and other related amp problems are eliminated due to the fact that Sansui uses no capacitors in the amplifier circuit. The sound that goes into the amp circuit comes back out nice and clean and distortion free.

 

Sansui G-4700 Inside

 

If you're thinking of buying a G-4700 there are a couple things you should keep in mind. First, they don't particularly like to power speakers at less than 8 ohms or even two pair of 8 ohm speakers for that matter. There is a particular transistor that tends to heat rapidly when the receiver is under too heavy a load. Of course, many receivers will overheat if worked too hard so it's not just a Sansui problem. Second, the digital display can fail. It is controlled with either one or two IC chips and they aren't really replaceable without a donor parts unit. So, if the digital display is dead on the unit you're considering you may want to pass.

 

Sansui G-4700 Ad

 

Overall, the Sansui G-4700 is a great sounding receiver with it's tuning section being its strongest feature. Many G-4700 owners rave about the clean pure sound of this receiver. At 55 WPC it produces plenty of power for a moderately sized room and it has all the features you'll most likely need.

 

Sansui G-4700 Back

 

Vintage Sansui receivers are highly sought after but fortunately quite a few were manufactured as well so most aren't considered rare. A really nice G-4700 can be purchased for around $200 with average condition units costing half that. If you're looking for a mid range receiver with higher end performance then the G-4700 is certainly worth considering.

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