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Sansui AU-101

Solid State Stereo Amplifier

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Sansui AU-101

Description

The Sansui AU-101 incorporates many of the state of the art features of the more powerful AU-555A, including an all silicon solid state design, professional arrangement of controls and a satin black control panel.

Like all other AU series amplifiers, the AU-101's tonal quality has been perfected and proved not only by precision electronic measuring instruments, but also by repeated listening tests in a wide variety of environments.

Specifications

Power output: 15 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 60kHz

Total harmonic distortion: 0.8%

Input sensitivity: 4mV (mic), 3mV (MM), 200mV (DIN), 200mV (line)

Signal to noise ratio: 65dB (MM), 75dB (line)

Channel separation: 45dB (MM), 45dB (line)

Output: 200mV (line), 30mV (DIN)

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 18 x transistors, 4 x diodes

Dimensions: 407 x 115 x 278mm

Weight: 5.9kg

Downloads

operating and service manual  English - caffrox

schematic  English - chrisbarry

operating and service manual (imp scan)  English - bibob

brochure  English - rob.miniero

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

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Comments

re: AU-101

Thanks, From Batam Island Indonesia..

re: AU-101

Re the AU101 during the 70's I must have repaired ~100 of these, the biggest problem is with the output transistors type 2SC1061 (also used in a Rotel amplifier). After driving the amplifier hard for about 10 minutes they would suffer a large increase in distortion if allowed to cool down the amplifier would recover.
It was our normal practice to replace the 2SC1061 transistors in both channels regardless of the fault reported by the customer.
Our preferred replacement was the TIP 41C (a bit over rated for the job but they never let us down) then adjust the quiescent current in the output devices to 20~25ma.

re: AU-101

Thank you both for the contribution :)

re: AU-101

Bought the AU-101 when it first came out! Retrieved from storage - need to restore - lost manual - yours should greatly assist - many thanks.

re: AU-101

Thanks a lot for the schematic: a little help for our planet.
I wish to add a little contribute: in my amplifier (s/n 821032220) the bias circuit is made by 1 double diode and 82 ohm resistor in series.
I made the following replacement:
VAS = BC140
drives = BC302 + BC303
Output BJT = TIP31A
Finally, I read:
Iddle current = 10mA

Best wishes

re: AU-101

Thanks a lot for the schematic: a little help for our planet.
I wish to add a little contribute: in my amplifier (s/n 821032220) the bias circuit is made by 1 double diode and 82 ohm resistor in series.
I made the following replacement:
VAS = BC140
drives = BC302 + BC303
Output BJT = TIP31A
Finally, I read:
Iddle current = 10mA

Best wishes

Sansui AU 101

Thank you very much for the service manual. A friend gave me a very beat up, however pristine working example that I had gave a thorough cleaning, replaced the wood sides with custom and taking it tomorrow to tech for thorough cleaning/servicing. A very warm sounding little vintage gem here..
Regards...

Manual for Sansui AU101

Thank you for the manual.

Thank you...

Best regard from indonesia..

Thanks! My AU-101 has been

Thanks! My AU-101 has been gathering dust and its time to get her fixed up :)

you guys rock!

you guys rock!

Thank you

Just dusted off the ol'amp and want to clean it up. Nice to have the specs on hand as I lost the original many moons ago. I have had this since new and it always seems to blow away the new ones I buy(which only last a few years nowadays). Mine has the all black back and the wood sides. It's has driven many many eight tracks, cassettes and record players over the years.

Reb

Thanks a lot !

From France !

bobbysdad's picture

Sansui AU-101 manual

Thank you very much for this one.
The main schematics can be a bit difficult to read in places, but very helpful nonetheless.

Cheers.

Thanks for the service

Thanks for the service manual.
Great contribution!

Sansui AU-101 manual

Thank you for the manual.

Sansui AU-101 Manual

Many thanks for the download

Great service.... the manual

Great service.... the manual downloaded:-)

This website is not affiliated with or sponsored by Sansui. To purchase AU-101 spares or accessories, please contact the company via their website or visit an authorised retailer.