You are currently viewing Stunning Rotel RA-1412 Amplifier Cleaned, Serviced & for Sale!

Stunning Rotel RA-1412 Amplifier Cleaned, Serviced & for Sale!

I’ve just cleaned, repaired and serviced this stunning Rotel RA-1412 integrated amplifier and she’s now available for purchase.

This incredible Rotel RA-1412 integrated amplifier is now available to buy, from my friend Pierre @ Revolution Turntable. Pierre runs Revolution Turntable, one of the last proper hi-fi stores in Western Australia. It’s well worth a visit if you haven’t checked them out, get in touch with Pierre if you are interested in this beast.

In preparing this 22kg monster amplifier for sale, I had to get through a layer of dust and grime, the likes of which I’ve rarely seen. It was mostly superficial, but the differences visible in the before and after shots really are night and day.

Specifications, Courtesy of HiFi Engine

Power output: 110 watts per channel into 8Ω (stereo)
Frequency response: 3Hz to 50kHz
Total harmonic distortion: 0.08%
Damping factor: 80
Input sensitivity: 2.5mV (mic), 150mV (MC), 2mV (MM)
Signal to noise ratio: 75dB (mic), 75dB (MM), 95dB (line)
Output: 350mV (line), 120mV (DIN)
Speaker load impedance: 4Ω to 16Ω
Semiconductors: 62 x transistors, 1 x IC, 28 x diodes
Dimensions: 540 x 180 x 430mm
Weight: 22kg

Read even more about the RA-1412 at The Vintage Knob!

Clean & Service

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The old RA-1412 looks a little forlorn in this image…
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She clearly needs some love

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I’d say she’s given many hours of pleasure over the years and just needs some TLC. Handles are a nice touch.
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Many ‘twiddles of the knob’ have taken place I think.
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And flicks of the switches…

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Let’s give her a birthday she deserves.

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Knobs need a bath…

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Clean knobs!
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Time for the faceplate

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Yuck!

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Now we are talking!

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And now a clean faceplate. Wow!

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I know, this was really crusty before…
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Just in case you forgot how crusty.
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What a difference a thorough clean makes.
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Time to take care of her output devices. Here, I’ve matched a set of her original output devices ready for reinstallation.
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I’ve mounted them on silpads for long-term reliability.
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Her beautiful meters are dead, time to repair them.
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Much better, they now work, and I’ve repaired the meter illumination for good measure.

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With fascia, knobs and controls back on, I think it’s time for a musical test…

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Wow, just look at her, unrecognisable compared to how she presented initially.

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And yes, she sounds fantastic, rich, warm and dynamic, as you would expect.

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How Does She Sound?

As you would imagine, this Rotel RA-1412 sounds warm, punchy, and just fantastic. Don’t forget, you can view and potentially purchase this beast at Revolution Turntable, in Osborne Park, Western Australia.

Liquid Mike

As a kid, I cherished my Tandy 200-in-1 electronics project lab, Dick Smith electronics kits, my Dad's hi-fi and my own first proper system. Later, I created Liquid Audio to help keep classic hi-fi gear alive and well. Our mission: to deliver TLC for classic Japanese, American and European hi-fi stereo equipment.

This Post Has 6 Comments

  1. plb0202

    Love watching these old bits of get get a new life. Amazing what you can do and the before and after condition never ceases to amaze me with the restorations.

    1. Mike

      Hi Paul, thank you and I’m really pleased to know that you enjoy these articles. Lots more coming!

  2. Craig

    Hi, Great article. And amazing pics! Thank you for posting. I just bought a RA-1412 and can’t wait to put it in use, but it also needs cleaning…badly. Did I see you washed the inside?? How? Doesn’t getting water inside harm it? I get the rest of the process, but that one has me stumped.

    1. Liquid Mike

      Hi Craig, thanks, that’s very kind of you. I use industrial/laboratory electronic equipment cleaning techniques that many don’t seem to know about or understand. In a nutshell, washing equipment is perfectly safe when done correctly, but there’s quite a bit to it. More importantly though and this is a big warning, most people definitely should not be doing what I do. Keep in mind I’ve been doing this a long time and I understand the processes, chemicals and equipment involved. For most people, mixing water and/or other solvents and electronics in an uncontrolled environment is a very bad idea, could be fatal and could damage the gear. I hope this clarifies some of what you were asking about? Feel free to hit me up with any follow-up questions.

  3. Craig

    Thanks Mike. I appreciate the clarification! I sure was wondering, never seen that before!! To be certain, I wasn’t going to attempt any interior work at all, the amp is going in to a specialty shop for testing and reconditioning. Besides a little static in the L/R,L+R knob, the unit functions perfectly. But the faceplate, knobs and switches are browned from smoke. From what I have seen on your blog, and read on other sites, I should be able to take off the faceplate safely, and using just soap and water, soak it overnight, then clean. Or are you using special solvents for that as well? Craig.

    1. Liquid Mike

      Hi Craig, that’s no problem. I don’t recommend soaking overnight as aluminium can become dulled by alkaline detergents and ink loosened to the point where you can lose printing, markings etc. Soaking knobs for an hour or so in a mild detergent and water solution is OK though and works well, combined with a toothbrush. I use specialty cleaners for fascias as these preserve ink and give the best results. Smoke, unfortunately, does generally create the need for a complete chassis wash to remove the tar-based residue from everything, so I hope they do that for you. The residue plays havoc with switches and controls and has to be removed wherever possible.

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