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Item: Sansui A-7 Integrated Amplifier and T-7 Auto-search Tuner combination.
Location: Gembrook or Knoxfield, VIC
Item Condition: Quite good for their age. ID markings have been engraved on the top edges of the front panels as shown in the photos, but these are not really noticeable when installed.
Reason for selling: No longer required.
Payment Method: Pickup - Cash, Paypal, COD Only
Extra Info: I happily used this combo for a few years in a second system until the Tuner auto-search drive cord broke. By the time I got around to repairing it I'd already put a Rotel RA-970/Onkyo T-4700 combo into that system. The tuner has since been repaired, 5 new power supply caps have been fitted to the amp, pots and switches cleaned and both items are fully functional. (Photo of amp internals is before the caps were replaced.)
PDF files of Tuner User Manual and both Service Manuals can be provided.
Discrete class A/B amplification. Inputs for 5 sources including Phono Input. LED Output Power Level Meter. Speaker switching. Loudness control and High Filter switch. Front Panel ‘Tape 2’ input/output connections. Microphone input with input level control. AMP SPECS
Power/Distortion: 45W/Ch into 8 Ohms @<0.05%THD
Freq Resp: 5Hz – 60kHz +0.5/-2dB
Hum & Noise: PHONO 80DdB AUX/TUNER/TAPE 95dB
RIAA Curve deviation: +/-0.5dB (20Hz-15kHz)
Dimensions: 430 x 132 x 247
Motorized Auto-search feature. 5-step LED signal strength meter. 3-LED Dial Pointer Tuning Indication. Sensitive front-end and very good alternate channel selectivity. TUNER SPECS
FM Usable Sensitivity (Mono): 0.9uV
FM 50dB Quieting Sensitivity (Stereo): 19uV (37dBf)
FM Alternate Channel Selectivity: 60dB
FM S/N Ratio (Stereo): 72dB
FM Distortion (Stereo): <0.15%
AM Sensitivity: 300uV/m
Dimensions: 430 x 87 x 260
I recently was able to aquire an Early Sansui (most likely 1971 model) AU555a from Gumtree. I have previously helped a mate get his late fathers AU555a rebuilt and modded a few months back and really enjoyed the sound these things produced so jumped at the chance to get one for myself with intention of holding onto it for many years to come. Another overhaul was on the cards before it even was in the house.
Just recently I did learn to test for distortion measurements by reading this thread (mods please remove if you don't allow links to other forums but it is useful info). https://www.diyaudio.com/forums/solid-state/338511-howto-distortion-measurements-rew.html
Also these mods not done out of my own genius so I take no recognition for that. Other more knowledgable folk have done rebuilds on these before and I found a handy thread over here https://audiokarma.org/forums/index.php?threads/leestereos-restoration-upgrade-of-a-sansui-au-555a.816754/ .
Anyway this thread will be mainly photos and maybe some useful info so that other prospective diy incensed individuals want to have a go at something like this, it may help them.
As you can see the front face is in spectacular condition. No scratches for something nearly 50yrs is pretty good I must say.
Looks like it has been services a couple of times. Last time in 04.
Cover in excellent nick apart from a scratch.
Ends of cover have splits (delamination of ply). I ended up putting some super glue in the split and clamping them together.
Original inside before clean. This is for it's age a very clean amp with not much dust build up. It must have lived a good life. The only down side I can see is a bit of tarnishing on the gold metal base plate and tone control cover.
Amplifier board before touching.
Item: Sansui AU-α607MR Integrated Amplifier
Item Condition: very good. BIAS was recently checked and adjusted. All Power supply cups was checked; all meets requirements.
Reason for selling:
Payment Method: Pickup, COD
907MRX was the only amp awarded in Japan in 1995. 607DR is similar to 907DR. The sound is the same but bit less power.
Copper screws say a lot about the amp quality. It is built as a tank.
Sansui AU-α607MR was sold in Japan only. It is need 100V power supply.
Comes with a high quality isolated 500W small size step down transformer.
Power output: 90 watts per channel into 8Ω (stereo)
Frequency response: 0Hz to 300kHz
Total harmonic distortion: 0.003%
Damping factor: 150
Input sensitivity: 0.3mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 70dB (MC), 88dB (MM), 110dB (line)
Output: 150mV (line)
Speaker load impedance: 4Ω to 16Ω
Dimensions: 430 x 162 x 452mm
Photos: Advertisements without photos of the actual item will not be approved.
Item: Sansui 331 Receiver
Location: Elwood 3184
Item Condition: Very good for age.
Reason for selling: Clearance of anything not currently in use.
Payment Method: Pickup - Cash, Paypal, COD Only
The Receiver looks mint from the front and is also in very good condition save for a tiny tear in the timber look veneer?
All the functions, dials and knobs are smooth and quiet. Though the lamps on the front do not light up, also the rear of the amp has a little bit of surface rust which can be cleaned of and resprayed . It is rated at a thumping 12 watts/ch so I would imagine high efficiency speakers would be the order of the day with these.