CLASSIC BIG SANSUI 7070 STEREO RECEIVER *SERVICED* Introduction
CLEANED,DEOXED AND LUBED, NEW LED LIGHTS INSTALLED, LAMP BOARD RESOLDERED, BIAS AND DC OFFSET ADJUSTED
A beauty, works great, sounds fantastic!
Never blown, all fuses and transistors are original.
When you see in description "problematic transistors replaced", that usually means there were (or are) serious issues with that stereo (blown, major repair, etc). That's how some Ottawa area sellers hide that fact. Not with this Sansui, it's a transistor virgin.
One of the finest vintage receivers; the sound quality is very very close to that of 9090 or 9090db.
With proper speakers the 7070 will bring live concert to you.
There's one thing to understand regarding Model 7070: while in pictures it looks "almost" like 5050, cute blue lights and all, in reality they are very different beasts. The 7070 is almost double the weight and double the size of something like Sansui 5050. It also sounds entirely different in terms of transparency, punch and dynamics. The 5050 is mid-fi at the best, while 7070 is pure high-end stereo, in modern terms. That's why the price difference.
The 7070 belongs right there with 9090, they are actually very similar in engineering and sound quality.
An audiophile who cannot afford a 9090 will still be entirely happy with 7070.
This Sansui will be tested for local Ottawa area buyer at the front door with CD player, FM radio, turntable and speakers.
Can be shipped in Canada, keep reading.
2.5-hrs maintenance service done 05/2022, details:
* Taken apart, cleaned and detailed in and out;
* All controls/pots/connectors deoxed/lubed/sealed using pro grade D100/F5/G5 ($126/3 cans) for noise-free performance;
* Lamps replaced with new LED;
* All lamp holder circuit board solder joints reflowed with fresh solder
(they are notorious on these 1976-1977 Sansui for becoming intermittent/cold, and all eventually go bad unless re-soldered: lights flickering or no lights at all);
* Bias voltages adjusted to factory specs, 20 mV L/R; the amp now runs lukewarm as it should, not hot, not cold;
* FM MPX adjusted for best reception in Stereo;
* This 7070 was fully tested, all functions work.
Sansui Description:
The Sansui 7070 is an advanced electronic design in the medium-power/medium-price range.
It has 65 watts, both channels driven into 8 ohms at 1000Hz, giving you adequate power to drive two sets of full-size speaker systems.
Features include a highly sensitive MOS FET FM front-end and a Dolby FM adaptor terminal.
* Production: JAPAN, 1976-1977
BUILD: Premium parts only:
* Sansui 4002452 in-house engineered fully shielded power transformer
* Main power filter caps: Nippon Chemi-con
* Signal path capacitors: Elna Audio and Nichicon
* Relay: Tairo
* Potentiometers/switches: Alps
* Power transistors: All-original all-discrete all-metal TO-3 Sanken (2SA746+2SC1115) x2 pairs;
all matched 6NR 6DR codes; great transistors if you ask me; Rolls-Royce of transistor world.
* Protection: 6 fuses + DC relay
* Unlike the vast majority of new millennium receivers this Sansui was built to last one's lifetime, with proper maintenance
* Rated power RMS: 60 + 60 Watts (into 8 Ohms Stereo 20-20kHz), one of the most underrated receivers I've seen
* Meters rated at: 200 Watts each, to show dynamic peak power
* Rear label: 330VA
* Frequency response: 20 - 30,000 Hz
* THD: 0.3% at full power, less than 0.08% at 1 Watt output (normal home listening level)
* Damping factor: 45
* Input sensitivity: 2.5mV (mic), 2.5mV (MM), 150mV (line)
* SNR: 70dB (MM), 80dB (line)
* Channel separation: 50dB (MM), 50dB (line)
* Output: 150mV (line), 30mV (DIN)
* Dimensions: 502 x 156 x 371 mm
* Net Weight: 16.6 KG, EXTREMELY HEAVY FOR THE RATED POWER
* Triple Tone Controls: Bass, Mid, Treble
* Speakers: A, B, A+B, Off 4~16 Ohms
* Headphones jack
* FM, AM, Phono1 MM, Phono2 MM, Aux1, Tape1/Aux2, Tape2/Aux3, Tape DIN, Dolby NR/4-CH Adaptor RCA jacks
* Mic Input (1/4 inch) with Variable level control
* Low Filter
* High Filter
* MPX Noise Filter
* Volume, Balance
* Stereo/Mono switch
* Loudness
* Muting: - 20 dB
* FM Muting Off
* Tape Control: Off, Deck1, Deck2, Copy 2-1, Copy 1-2
* Signal Strength, Tuning and Stereo indicators/lights
* Power output meters
* 2 extra power outlets, 1 switched, 1 unswitched
LINKS:
CAD $1012 + shipping:
https://www.ebay.ca/itm/234096506744
https://www.hifiengine.com/manual_library/sansui/7070.shtml
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Note regarding connectivity: What can you plug in?
- CD player, iPod, tape deck, computer, turntable .... Use mini-jack 3.5mm to RCA cable for iPod and computer
People use adapters/cables like these for phone:
https://www.amazon.ca/UGREEN-Headphone-Certified-Lightning-Connector/dp/B07Q49SVYR/
https://www.amazon.ca/UGREEN-Connector-Speakers-Smartphone-Devices/dp/B015PZ7QO2/
https://www.amazon.ca/Bluetooth-Streaming-Esinkin-Wireless-Receiver/dp/B016NUTG5K
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Local buyer much preferred (cash on pickup); e-transfer is possible, but unpredictable, takes from 2 min to 35 min waiting to go through.
I will ship in Canada if paid by Interac e-transfer, packed nicely with PP foam/styrofoam, insured and tracked.
Shipping costs: $73 ON/QC, $88 to Alberta, $97 to BC.
Pickup or shipping only, no deliveries.
Shipping outside of Canada is possible only if paid by instant money transfer service(MoneyGram/WU);
or US cash (at current Google exchange rate) sent by Priority/Xpress registered mail, preferably with signature; nothing else.
I got paid a few times like that before, no issues.
I've been collecting vintage stereos for a long time, so trades for old stereos in any condition will be considered. 70's and 80's heavy all-metal boxes preferred.
SERIOUS BUYER ONLY - SEND CELL PHONE NUMBER WHEN READY TO BUY
See my other ads - Thank you!
