Realistic SA-101 LoFi mini-amplifier

 

General:

Around 1980 Tandy 'Radio Shack' company came with its Realistic SA-101 amplifier.

 

The SA-101 was made in Japan has discrete output transistors made by Hitachi
and has output power of 2,5 Watts RMS per channel.
 

detail front

detail front

 

Owners manual:

click here to download the user manual of the SA-101

Power amp section ^

 

special futures:

Specifications:

Distortion (THD 20Hz - 20kHz) < 0.1%
at continuous output per channel: 2,5W RMS, 5 Watts peak.
Speaker impedance: 4~16ohms
Signal/noise ratio: 85dB power amp. section
3 x RCA input, rec. output in back, phono input switchable for magnetic and ceramic cartridge.
Very light and small footprint amp.
Size: 3.5" x 9.25" x 6 7/8" (HWD)

 

interior 2 ^

 

Schematic:

schematics Realistic SA-101: click here

Well built small amplifier.

 

PCB (modified) ^

 

Modifications:

You may replace some capacitors and resistors in the power supply and power rail.

This amp has the same setup as in the SA-102 version 1 and can be modified to a 2x 5 Watts RMS amp,

 

different version inside ^

 

Sound:

The sound is good.

 

© Hans Hilberink - PE1MMK ® 2003 - Last update: 20-09-2016.