hifi engine

Manual Library / Realistic

Realistic STA-120B

Solid State Stereo Receiver (1973)

add a review (1 review)

Realistic STA-120B


Tuning range: FM, MW

Power output: 40 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 25kHz

Total harmonic distortion: 0.8%

Input sensitivity: 2mV (MM)

Signal to noise ratio: 65dB (MM)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 19-3/8 x 15-3/8 x 5-3/8 inches

Weight: 36lbs

Year: 1973

Price: USD $299.95 (1973)



 Login or register to post reviews

Reviewed Sep 19th, 2017 by stlkcdc1

I found an almost mint condition unit at a local estate sale. Stored in original box and packaging. Great power, excellent tuner section. Solid, buttons and switches are sturdy. Been using in a larger bedroom listening to FM mainly. Plenty of power, at 3/10 almost too loud. Beautiful design. Big fan.



re: STA-120 (non-B model)

I'd really like to see a listing here with info, reviews, and schematics (ESPECIALLY SCHEMATICS!!) for the original STA-120 (non-B), which was built for Radio Shack by Hitachi, and sold from 1969-1971. I recently bought one on ebay. It sounds great, very clean with a wide sound stage, and much greater volume than the 60WPC IHF (30-40wpc rms) would lead you to believe. If you've ever heard one of the higher end vintage Hitachi receivers or amps, you'll recognize the sound immediately.

The only problem with mine is a hiss in the right channel, which gets louder as the receiver warms up, peaking after about 45 minutes. The left channel is amazingly clean, so, I know the hiss is indicative of a problem within the right channel, rather than a characteristic of this model. In the 2 months since I purchased the receiver, my vintage stereo tech has had it more than I have. It's now back in his shop for the 3rd time, trying to eradicate this hiss. The unique electronic architecture of the original STA-120 (very different from the 120B, which was built for RS later, by a different & unknown manufacturer, using plug-in PCBs, instead of the point-to-point wiring found in the Hitachi-built original), and lack of schematics makes this quite a challenge even for someone with his years of experience. He has used Deoxit on all the controls, replaced several capacitors & transistors, re-soldered connections and done other things which are well beyond my limited understanding of electronics. Every other aspect of this receiver sounds even more amazing every time I get it back from him, but, trying to find the source of this hiss is driving both of us insane. Once the hiss is fixed, my original STA-120 (non-B model) would easily stand up well to, and even surpass the performance of most any similar wattage Pioneer, Kenwood, Sony, or, dare I say, Sansui receiver of the same vintage.

For those interested in such things (and who isn't?), here is a link to the advertisement of the original STA-120, in the 1969 Radio Shack catalog (see page 14):

This website is not affiliated with or sponsored by Realistic. To purchase STA-120B spares or accessories, please contact the company via their website or visit an authorised retailer.