Great preamplifier BUT really only with right tubes.
Infact it is really prone to noise, so only Siemens E188cc or RCA 7308 are the cure.
With these tubes it sounds really fantastic, with great detail, huge holographic stage and a little lack in bass extension.
For the money (in used market) it can't REALLY beat!

Larger-than-life sound, palpable, present midrange. "Musical"

Some could say very slightly "euphonic" or midrangy, but other like myself would characterize this distinct quality of the Sunfire Classic as simply "Real" sounding.

Bought this while I was selling hifi about 10 years ago...Received some special special pricing from Sunfire...

Initial impression were very favorable...sound nothing like solid state...Everything was just larger, sweeter, more "true to life" with a seductive midrange. But then over the years, the magic seemed to fade...And in recent months, I couldn't help but hear the preamp sounding rolled-off, congested and dry.

Well duh! I hadn't replaced the tubes...ever. So first I opened up the unit to pull out the original Sovtek 6922 - only to learn, upon researching tubes, that this is really a pretty mediocre tube (ok...it did sound pretty damn good when new, but it was really sounding lousy as it got used up).

So I found two pages that describe the sound character of the entire compatible tube family. See these links
http://home.att.net/~chimeraone/6dj8sound.html
http://www.google.com/search?hl=en&q=joes+tube+lore&aq=f&oq=

And then I found some Amperex 6DJ8/ECC88 on ebay (orange globe logo, made in holland, steel pins); and I replaced only the three tubes in the line section. WOW! Amazing difference in sound quality. Terrific transparency, detail, openness while preserving that huge soundstage and palpable midrange presence. I've owned and heard so much equipment over the years and although aural memory isn't very reliable, I have to say that I just can't recall being more impressed with the sound quality of a preamp that I am of this now ten year old unit with a decent set of tubes.

And the tubes I'm using are not even the very best. Some suggest that the Amperex PQ are even better or that the superspec 7308 tubes are the ultimate. Nonetheless, this preamp sounds fantastic.

A few notes not really relevent to sound quality. First What the heck is in this preamp that makes it so good? A look in the box reveals a lot more empty space than you would expect. And then there is the mirror box and gimmicky lights surrounding the tubes - it's almost as if Bob Carver thought his brilliant and seemingly simple preamp design wouldn't be enough so he threw in some visual embellishment to bolster the package.

Hard to figure, in the end, this is truly a unique product that is very musical and a joy to listen to.

Customer Service

Accessible, helpful.

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Does everything well, and looks good doing it.

It very big !!!

My first tube pre-amp. It took me 3 years to finally go tube's. Iv'e been a solid state man for 35 years. Man I should have done it sooner. The optional phone section will make you albums sing. This thing is sweet!!!

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Sound quality, remote, terrific tone controls, beauty, build quality.

Lack of removable power cord.

I bought this used a few years ago to augment an all Aerial Accoustics 7.1 surround sound system. I use the Sunfire pre for all two channel analog connections as a front end to my heavily modified Jolida JD1000, into the famous Aerial 10t speakers. I also run the front channel signals of my Lexicon DC-1 surround sound controller through the Sunfire to sweeten up the sound, making the Lex another analog 2 channnel source for all digital applications. In short, I love my Sunfire tube amp. This Pre can give you an enormous soundstage, particularlly vertically, and that magical illusion of reality, as opposed to the more common sound quality of high-end hi-fi. I've found that it will accept and improve the sound of everything from sattelite, to my Shanling cd/SACD player, and my Camelot Roundtable MKII CD/DVD unit. Upgrade tubes are a must, as others have stated. My amps are all integrated, so I can really speak for the difference the Sunfire makes in my system, and the quality addition it makes is just enormous. Several of my other components are much more expensive than the Sunfire, but I wouldn't exchange it for anything. The balance controls are particularly well executed, and take nothing away from the music, but give you ultimate control of the balance between bass and treble. The remote control for a tube preamp is a wonderful addition. It's also a gorgeous machine; the most beautiful piece of stereo equipment I've ever owned. I bought mine originally without the remote control, and sent it to Sunfire in 2002 for that addition. It was back to me in less than a week, and believe it or not they had upgreaded just about everything in the box to bring it up to thier latest engineering level. The entire power supply and circuitry had been replaced, along with a list of other electronic items too long to detail. This was a big surprise, and there was no charge for either the engineering changes or the shipment back to me! I called to thank them, and got through to the tech guy who actually did the work. He took plenty of time to explain how Bob Carver had voiced the preamp, and how proud he was of the way it integrates the best of both old and new technology, at a very low price point. If you are looking for an analog centerpiece for a very high quality musical system I'd highly reccomend the Sunfire Classic Tube Preamp. You can spend a whole lot more, and not even come close to the sound, build quality, feature set, and outright beauty of this preamp. It's also an item you can buy for a lifetime; it's built to that ultimate standard of quality, like a McIntosh, only more classy.

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Nearly transparent, beautiful looks, ample versitility.

Really, I can't complain.

The job of a preamplifier is to direct a musical signal from source to amplifier without getting in the way or adding/subtracting from the source signal. The Sunfire does just that. Its nearly transparent, and by that I mean it adds a warmness to the music that is not unpleasing or undesirable. I like to think of it as a gentle giant. It will, without prejudice reveal imperfections in any source. To that I say Bravo! Connected to its partner; a Sunfire Amplifier, its a complete musical masterpiece.

Build quality, features, price, value. Nice sound (but not ultimate).

Not the ultimate preamp in terms of sound for me personally

I've got the tube preamp delivered at home by an official dealer for compare with other products. I was interested in the product because of price, features and the fact, it is a tube component and has remote (for this test I had the predecessor without remote - yes I know, there are some subtle differences). There are very few tube preamps with remote available here in Europe and far less in Austria. Until now, I used the built in volume control and (rather limited) input selector of my VAIC 300BSE integrated (in fact it's more a power amp with volume and input control). I liked to get some additional input terminals and at least one additional output terminal. The Sunfire had everything I wanted and even some features more, and also was built superbly, so I now was rather curious, how well the preamp will sound to my ears. So the "passive pre" would now have been exchanged for a complete additional tube stage. Therefore I expected either a complete change of the sound I was used to, or simply some loss in purity and dynamics. To make things short, it was the latter. The VAIC itself clearly offered the more transparent and dynamic sound by far, and also was a bit more beautiful in general for me personlly. But I have to mention, that the Sunfire classic tube preamp is a good sounding amplifier, a bit on the warm and more gentle side (while still details and wide soundstage were maintained), it just does not offer the absolute detail and transparency a very good 300B design can deliver, which I just cannot miss, once used to. Nevertheless, even my wife liked the Sunfire a lot because of the looks. If interested, I finally voted for an Audio Synthesis Passion PASSIVE preamplifier at a whopping 1K (for a tiny passive box), which did even outperform the already passive ALPS poti and gold plated relais switches of the VAIC by far (the VAIC has also one direct input for use as power amp only, which is used now for signals coming from the Passion). I finally have to mention, that all electrical parameters of source, cables and power amp must meet for best results when using any kind of passive, which was true with my kind of components. Also, I have to mention that I'm now without remote, but as the gain in sound has become such a step forward, I'm now using my legs more often (and finally, there would be the new Passion Ultimate with remote at 2K). Hope, this was of some help.

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there are NOT many similar tube preamps with remote; otherwise I've tried a lot of preamps etc. in the past, too many to mention

up front sound stage with stong vocals

hit of graininess,noisy tubes,front to back not as deep as it could be

The sound is full of "chocolate". Although its not the biggest sound stage I have heard, it is certainly one of the most revealing. Intstuments that are at the forefront of the recording are truly right before you and vocals are in your face, clean and without harshness. If sunfire could improve the front to back imaging, this pre would almost be impossible to beat. At its price, hard to beat.

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honest sound, simple reliable construction.
endless versatility and easy to operate.
stunning appearance.

no detachable power cord. sub par moving
magnet tubes.

Overall a great preamp. line section very
similar to my pas4. I ordered the optional
phono section and was most impressed. I have
a moving coil cartridge with a 47k load so
I had to change the factory setting from 470
to 47k.(simple procedure done internally).
I personally like sovtek tubes and was glad
6922's were used in the line and moving coil
sections; however I would upgrade the moving
magnet tubes to a sovtek lps 12ax7 if I had
a magnet cartridge. Don't be sold on any one
brand of tube. I have jan phillips 6922's in
my pas-4 and I am sure they might be great in this as well. Certain tubes work better in certain equipment. I am leaving the sovteks in. If Bob Carver didn't care he would have put unmatched unlabeled junk in.
Bugle Boys,Teslas,Sovteks,phillips just be
happy and enjoy great valve sound with all.

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Price, ease to tinker with, open sound stage, RIAA for digital.

gets grainy at high vol, cheap tubes

Great sound for the money if you dump a few bucks into replacement tubes. I used amperex bugal boys in the phono stage and RCA for the line stage. Huge improvement. Cheap ass Sovteks tested bad NEW. If you like the sound tubes give you you will get a bargain here. if you can afford a little more go for the Tube Research.

Refined sounding, tonal balance, imaging

Hissing sound when using contour setting

It is the best value for money. It can never be better sounding than using this preamp to couple with the 300B SE amplifier to drive my LS 3/5a. The best combination for below US$5000/- that gives you the kind of enjoyment that cost many times more.

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