Rotel RC-03 Review (Preamplifier)

[NTTY]

Nice review.
Thanks

You didn't check headphones output ?
THD+N vs level (voltage or power) with the usual impedance loads and output impedance...

I did not because I’m not equipped as I’d like to be for these tests. That’s in my list for 2026

 

[Rja4000]

I’m not equipped

All you need is this:

Loading…

nl.aliexpress.com

Then solder 2 balanced cables to male XLR and you're done...

Oh, you may need a 1/4" TRS male to 1/8" TRS female adapter too.

Another example of Ivan's (@IVX ) genius idea.

 

[French Meloman]

A very interesting review of this preamplifier, which has a resolution approaching or exceeding 16 bits in most tests. Its performance is therefore sufficient for most use cases as long as you stick to RCA connections. I also like that it has a balance control, as recordings and/or listening setups may require adjustment in this area. I would advise those who own one to keep it carefully.

 

[JayGilb]

Great review, very detailed.
Thanks.

 

[RHO]

I owned one of these back in the day.
Loved it. Very reliable, nicely build for the price and great (no) sound.

 

[DSJR]

Great review - thanks!

We liked the previous 'black' models (separate box phono stage was the price of this preamp I seem to remember) but Rotel changed distribution (to B&W I think), went all silver and I don't remember ever using this generation of equipment.

The phono stage looks to be a plug-in card... I wonder if other options were available for it? I like the very simple circuitry as in reality, that's all a line stage needs. I've seen some modern preamps (a Cambridge 800 model especially lingers i n mind's eye) and it's frightening how complex it looked inside.

 

[audio_tony]

@NTTY I don't see any relays for input selection - does this use the TC9163 IC for input selection?

I had an RC-972 (which I think is close to being the predecessor for the RC-03) for a while. The RC-972 uses a TC9163 IC for switching between CD/Aux1/Aux2/Tuner/Video but has a separate (physical) switch for tape monitor.

Both my son and I noticed quite a sonic improvement when using the tape input for CD instead of the actual CD input via the TC9163, which despite measuring reasonably well, seemed to lose some clarity to the sound.

 

[lini]

We liked the previous 'black' models (separate box phono stage was the price of this preamp I seem to remember) but Rotel changed distribution (to B&W I think), went all silver and I don't remember ever using this generation of equipment.

Can't tell for Britain, but over here most models were available in both black and silver versions, also including the RC-03 and the matching RB-03.

Greetings from Munich!

Manfred / lini

P.S.: Personally I'm somewhat disappointed, that they discontinued the A10 (= pretty much the same thing as the RA-10, RA-04 and RA-01 before), as that was one of the last affordable integrated amps, that still sported a classic tape-loop with monitoring function.

 

[HalSF]

Excellent!

I would just add that I wish reviews of vintage gear (in this case a component first released more than two decades ago) would include prominent information about date of launch and if relevant, discontinuation — not all of us are deeply knowledgeable about the provenance of older gear!

 

[pieterv1]

does this use the TC9163 IC for input selection?

Yes it does! I've only been able to find service manuals of the RB-06 and the RA-06 (integrated amp), the latter shares a lot of the design with the separate preamp RC-06/RC-03.

It seems pretty cleverly done to me, but will this affect the signal in any way?

 

[DSJR]

Yes it does! I've only been able to find service manuals of the RB-06 and the RA-06 (integrated amp), the latter shares a lot of the design with the separate preamp RC-06/RC-03.

It seems pretty cleverly done to me, but will this affect the signal in any way?

I was going to say it shouldn't, but famous last words -

I have to say that I was never hugely fond of the Quad 34 preamp although it's beautifully made. A service engineer on eBay had one for service as it was misbehaving and in addition to the usual cap replacements (we had some s**t components available to us back then), he replaced the electronic switch ics and claimed that a previous sample he serviced this way, distortion and noise went down if I understood him right.

So, no personal objective vibes here at all sadly, but if this chip really does have a slightly negative effect, are there modern substitutes?

Rotel had a 'deluxe' preamp available back then in a ~2U height and a row of buttons under the rotary controls. I wonder how different it is/was?

Rotel RC-1572 Stereo Preamplifier - Audiophile Components - Silver | eBay UK

Rotel RC1572 Pre Amplifier I’m selling due to it not producing any sound it turns on all the functions work you can hear the relays switching when you change source like going from AUX to USB but no sound. Could be a simple fix like a fuse I haven’t had it looked at due to not knowing where to...

www.ebay.co.uk

 

[NTTY]

All you need is this:
View attachment 498576

Loading…

nl.aliexpress.com

Then solder 2 balanced cables to male XLR and you're done...

Oh, you may need a 1/4" TRS male to 1/8" TRS female adapter too.

Another example of Ivan's (@IVX ) genius idea.

Ordered

 

[NTTY]

I was going to say it shouldn't, but famous last words -

I have to say that I was never hugely fond of the Quad 34 preamp although it's beautifully made. A service engineer on eBay had one for service as it was misbehaving and in addition to the usual cap replacements (we had some s**t components available to us back then), he replaced the electronic switch ics and claimed that a previous sample he serviced this way, distortion and noise went down if I understood him right.

So, no personal objective vibes here at all sadly, but if this chip really does have a slightly negative effect, are there modern substitutes?

Rotel had a 'deluxe' preamp available back then in a ~2U height and a row of buttons under the rotary controls. I wonder how different it is/was?

Rotel RC-1572 Stereo Preamplifier - Audiophile Components - Silver | eBay UK

Rotel RC1572 Pre Amplifier I’m selling due to it not producing any sound it turns on all the functions work you can hear the relays switching when you change source like going from AUX to USB but no sound. Could be a simple fix like a fuse I haven’t had it looked at due to not knowing where to...

www.ebay.co.uk

I have this one:

Interested by a review of it?

Considering all inputs/outputs, it would keep me busy for quite some time

 

[NTTY]

Thanks for the review.
Always a Rotel fan.

Same here, I’ve been a long term fan and customer.

Once upon a time, I was running two RB-1070, that Amir reviewed, in mono mode. I pushed them unreasonably hard, to shut down several times, and they never failed me, almost seemed to like that.

 

[lordhumungous]

I love Rotel amps. Mine have been dead silent and loaded with power reserves.

 

[totti1965]

Anyways, I've been writing this review with the Rotel driving my too big Accuphase amplifier, feeding two very hungry B&W speakers.

Supertramp - Crime of the century was the album of choice to accompany this write up, a portal to a distant time. I’m back in that smoke-filled living room, my parents laughing with friends as a grey haze of cigarette smoke lazily drifts mid-air. I’m a child again, hidden under the dining table, lost in a world of toys, while that masterpiece spins its magic...

What does that mean? Straight wire with gain, transparency, and time travel This is what music is about, and that preamp knows how to sing.

I hope you enjoyed this review and I wish you a happy weekend!

Flo

Gilad, the son of Ivor Tiefenbrun (Linn) told similar stories about his Dad and the Music of Queen and Supertramp which accompanied his childhood when he was 3 or 4 years old and under the table, ha ha ha…
Crime of the Century was my reference LP to fiddling the Linkwitz Dipole subwoofers to perfection - just by ear.

 

[MC_RME]

Regarding clipping at 160 mV: that might depend on the volume control position. Did you try different settings of that one?

 

[Linnie]

My impression of Rotel is somewhat of an unspectacular yet good quality and reliable brand. I think your informative review confirms that.
I like your nice product images!

 

[NTTY]

By the way, if anyone of you would like to receive the RC-03 for free, please write here or in a private message.

I’ll ask you to finance shipping costs, though, which will be stupidly high being from Switzerland. You can get to know the cost of shipping to your country using this link.

Please note that I don’t have the remote control and that two feet are missing the little rubber underneath. And it is a 230V unit, so that limits from what your country you’re from.

 

[NTTY]

Regarding clipping at 160 mV: that might depend on the volume control position. Did you try different settings of that one?

Indeed, I suspected I was potentially clipping my input interface (10Vrms max), so I tried with much lower gain (volume knob way lower) and it was the same.
So, I don’t have an explanation for that difference.