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Just acquired a Radio Shack SA-155 integrated mini amp. Perfect for a small room but I have a question. In researching the amp, some people said the previous version, a Realistic SA-150, did not have the proper RIAA equalization for the magnetic phono input. I was wondering if the newer versions corrected this? Could not find the answer on the internet.
Follow Ups:
As a followup, after I cleaned all the switches and modified the speaker wire for the RCA inputs, I hooked up the the SA-155 to Minimus 7 speakers and my BIC 960 turntable. I must say with my 67 year old ears it sounded pretty good. For its size and very low power this is a spectacular amp. With a decent CD player, this will be my bedroom setup. The Minimus 7 speakers cost $4 and the SA-155 cost $6. Pretty good investment.
At 1.8 watt output with 1% distortion, you probably won't notice. I would not expect it to be very accurate. It doesn't need to be given the overall design.
Dave
Don't count it out without a good listenin'-to on decent quality, high-sensitivity loudspeakers. There are more than a few paradoxes in hifi audio, I'd opine.
I believe these R/S amps use discrete components; no we're not talking Nelson Pass/First Watt grade hardware, but I'd never recommend passing judgment without giving a listen.
As to the RIAA accuracy -- who knows?! I certainly wouldn't expect much of the on-board phono preamp section but 1) it's worth a try (no harm can be done) and 2) if the experiment implied above is tried (amp & decent loudspeakers) and the outcome is encouraging with a line-level source (e.g., a decent CD player), why the heck not try a decent, inexpensive outboard MM (or MC?!) phono preamp such as Jim Hagerman's Bugle 2. The Bugle 2 is a very fine sounding solid state phono preamp, I'd opine.
One might be surprised by the outcome(s).
Not an SA-155, but another, really cheap-jack R/S "integrated amp" that passed through the ole manse some years back. No MM phono pre in this one :-P
all the best,
mrh
The one he is talking about is newer, and I believe all it has is one chip and a power supply. I have a couple of the older ones which are discrete and look to be single-ended like many of Nelson Pass's amps. I bought them to practice on, but I don't think they will displace my Threshold amp. (There he is again!)
Dave
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