AU-9900 - Maybe The Best Ever! Sansui Integrated Amplifier Vintage Stereo Repair Audio Restoration

Sansui AU-9900 stereo integrated amplifier video showing the repair and restoration of this vintage classic audio equipment that was produced from 1975-1977. It has the reputation of being one of the best sounding vintage integrated amplifiers ever produced. I detail the complete restoration and repair process from the power amplifier section to the faceplate and knobs. I then show the procedure to check the bias current of the output transistors as well checking the DC offset. I then bench test this Sansui AU-9900 for maximum power output and total harmonic distortion(THD). I use a vintage Sound Technology ST3200A audio analyzer for measurements.

I am a hobbyist that repairs and collects vintage stereo gear. Every piece of equipment that you see in my video's is mine. I don't repair other people's equipment and then send them back to their owners. I repair, restore, and bench test every unit. I then install each unit into my own stereo system and do what they were meant to do. Play Music!

Other Classic Stereo Equipment Video's -

Sansui AU-9900 Part 1 - https://youtu.be/2CWCaYc5VaI
Sansui AU-9900 Part 2 - https://youtu.be/BuNjCmR5YIw
Sansui AU-9900 Part 3 - https://youtu.be/bDDacpdS0ww
Sansui AU-9900 Part 4 - https://youtu.be/-AEwZdGKW3I

Pioneer SPEC-1 - https://youtu.be/Ap3CpD3XuHA
Pioneer SPEC-2 - https://youtu.be/5Qydq5OI0Js
Nakamichi Digital - https://youtu.be/6sQjnIPDCr8
Pioneer SX-1250 - https://youtu.be/Fco83u2kRmU
Pioneer A-27 - https://youtu.be/_5rypYHiPvs
Pioneer SX-1980 - https://youtu.be/xtHutsQRgxk
Sansui G-9000DB - https://youtu.be/Isd-T_Hmi-s
Pioneer Rack System - https://youtu.be/uGQaHpf2ua0
Yamaha - CA-2010 - https://youtu.be/20D4R7zQzhU
Sansui Eight - https://youtu.be/2QejkD9k4cU
Sony EL-7 - https://youtu.be/uO6ojtdsFHk
Luxman M-300 - https://youtu.be/TVQoLh3vHOo
Scott 340B - https://youtu.be/rWzGxm9WGHU
Marantz 2270 - https://youtu.be/qcxn9gtyaK8
McIntosh 752 - https://youtu.be/hlJvuFoRcvw
Marantz 23 - https://youtu.be/6O6dZyhLbyo
Marantz 2385 - https://youtu.be/XiO1kod_w7o
SAE 2400 - https://youtu.be/JyHrB8FR8sg
Nikko 440 - https://youtu.be/rYorrEC5VJE
Sansui CA-2000 - https://youtu.be/9cJtyVHiZW8
Nakamichi LX-5 - https://youtu.be/4YYooF0X8Gs
Kenwood Eleven III - https://youtu.be/S81fnhXHFZk
Pioneer SX-1050 - https://youtu.be/eOOnx3SVFi0
Yamaha CA-2010 - https://youtu.be/amyuIAUndYQ
Sony TA-F6B - https://youtu.be/qvYFdtPDdlY
Nakamichi Dragon - https://youtu.be/TP0Y7E67TTg
McIntosh MC2205 - https://youtu.be/zMOb5qnIde8
McIntosh MC2505 - https://youtu.be/oOmn1APLS-Q
Sony EL-7 - https://youtu.be/9icrg8GCl3c
Sansui BA-5000 - https://youtu.be/246oH230w0o
Pioneer SX-1980 - https://youtu.be/PIpf7j_gBi4
Nakamichi 1000 DAT - https://youtu.be/c42fDOrfesk
Akai GX-220D - https://youtu.be/7vwwO_1Ercc
Kenwwod Eleven III - https://youtu.be/YJ7rGNwnYSs

Troubleshooting Failures In Vintage Audio Equipment -

Vintage Stereo Repair - https://youtu.be/N3e9C4mUui0
Phono Repair And Troublesome Transistors - https://youtu.be/lkcP1z-KcPA
Hakko 808 Desoldering Tool A Must Have - https://youtu.be/NtSn_HPT-sE
Hazards Of Reel To Reel Tape Deck Repair - https://youtu.be/KvXwN5igzDg
No Audio In Vintage Equipment - https://youtu.be/pKqxlT9sgZY
Troubleshooting In Vintage Equipment - https://youtu.be/xk5gjq5ehK0
Reforming Speakers - https://youtu.be/ttbgeDagRus
Checking DC Offset On Vintage Amplifiers - https://youtu.be/ZvBoxhpa-v8
Replace Old Electrolytic Capacitors - https://youtu.be/RaWrYJ6amcA

Help For the Vintage Audio Fan -

Buying Vintage Audio? - https://youtu.be/l3RdJH9mSs0
Finding A Technician - https://youtu.be/MRh0AbDToyA
Buy Vintage Or New Stereo Gear? - https://youtu.be/IYou7PbAjnY
Beware Of Vintage Stereo Ad's - https://youtu.be/Stkiz5aaIo0

Видео AU-9900 - Maybe The Best Ever! Sansui Integrated Amplifier Vintage Stereo Repair Audio Restoration канала Vintage Audio Addict