Pioneer SA-7100 Stereo Amplifier.

Fully restored in January 2026. We use ONLY hiqh quality audio grade parts, ordered at Mouser/DigiKey. No corner cutting to save a few bucks.

What was done:

Both filter capacitors have been replaced/upgraded with the same diameter to keep the original design. 

Power output transistors were replaced with matched together for hFE (DC gain) Onsemi MJ21195G/MJ21196G

ALL electrolytic capacitors have been replaced with audio grade Nichicon UPW, UKL, WIMA and Kemet film caps.

Power supply capacitors were upgraded to higher-voltage units to improve reliability. 

All tired resistors and diodes have been replaced with Onsemi, Fairchild.

Many noisy and tired transistors were replaced.

Bias and DC Offset adjusted to specs.

Exterior conditions:

Faceplate and knobs: Very good condition. 

Wooden case: Very good. Reconditioned with a walnut finish.

Top black grill: has imperfections. See the photos.

Every restored unit has a full burning day at medium volume.

Will be double boxed for shipment. 

Local pickup is welcome.

All removed parts are not included; the photo is provided for information only.

Cross-listed, free shipping without local taxes, hifirestoration_com