Amp and Preamp for JM Lab Alto Utopias


I know this question has been asked before, but I haven't seen any recent answers. I'm strongly thinking about a change in my amps. I've had the Alto Utopias now for more than six years, and I still love them. I'd like a preamp and amp that pair well with the Altos and that can do well with the great variety of music I have in my collection: rock, jazz, soul, international, electroacoustic, blues, Afrobeat, dub, ambient, trip hop, breakbeat, etc. For the most part, I prefer a lush and warm sound for most acoustic recordings. But I prefer a bit more analytical detail on electroacoustic music, which requires closer attention. I sense a good, powerful solid state amp works best with the Altos for better control of the bass.
washline

Showing 10 responses by nvp


Accuphase pairs very very well with Focal Utopia Be speakers. You do not need to go to their separates to best your current Musical Fidelity integrated and you have quite a few choices (e.g. even the old E-406 and E-407 integrated are supperior to the Tri-Vista 300, while the newer iterations E-408, E-450 and E-460 even more so).

However, if funds permit, the Altos really deserve separates. My recommendation would be one of the Accuphase "mid-class" preamps (C-2400, C-2410, C-2800, C-2810) with an Accuphase class A power amp (e.g. A-50, A-45, A-46, A-60, A-65). The Accuphase class A amps do not get nowhere near as hot as similar designs from Pass Labs for example. However, if they still get too hot for you, Accuphase have very many A/B amps that sound very similar to their class A designs.

Having said all this, I should also say that your Trivista 300 integrated also pairs very well with the Altos. Thus, proceed with care and sell your MF integrated only after you are 100 percent sure you like the new-electronics-Alto combination better.

Good luck and keep us posted!

Paul
Congratulations for the new integrated Bill. I look forward to hear how does the Emitter compare to the Trivista 300 integrated.

Washline, the P-7100 and the A-65 are Accuphase top of the line power amplifiers. I did not compared them, but form what others have reported except for the fact that the P-7100 has better control over large woofers there is not significant difference between the two. Thus, P-7100 may be considered the better unit of the two (not only it has more power but it does not get hot either) but both amps are about as good as it gets.

Regarding the humid and hot summers in Korea, my guest is that Accuphase units should be fine for many years under those conditions. After all in Japan (where they are built) the summers are also hot and extremely humid. In the Netherlands we have also quite humid summers (not as bad as in Korea though) and there are people here that have 20 years old Accuphase units that still work fine and so far required no service. Thus, since you also have good prices in Korea for Accuphase I would advice you to arrange an audition to check whether you like the Accuphase-Focal combination. But be warn that these Accuphase boxes are very addictive, once u get one u will want to get more of them and they ain't cheep (and if eventually you will end up, say, with a P-7100/C-2810/DP-700 combo, then you will most likely want to get better speaker e.g. Nove or the Grande Utopias Be).

Finally, regarding the digital amps mentioned above, they are indeed very efficient but that does not mean they will run cold. In fact some of these amps get hotter than most of the class A/B amp (e.g. Lyngdorf). Also, why invest in a second amp and not in a good ventilation system than can regulate the humidity in your room?

Best wishes,
Paul

p.s. I am not an Accuphase dealer (just a scientist :) who is very found of Accuphase).

The weather may be bad in Korea but on the other hand they really know how to treat professors there (e.g. they bow). :)

I do not have any experience with the Emitter amplifiers and I should say that you do not see them that often in hi-fi shops and/or 2nd hands adds over here. I do not know why as they seem to get great reviews and I have also heard a few dealers saying good things about them. The battery option for the Emitter 2 is surely a very nice touch.

Personally, I believe the Accuphase top separates, e.g. P-7100 + C-2810 will easily outclass the Emitters (they should given that they are 2-3 time more expensive here). But, I am just speculating here since as mentioned I have never heard an Emitter amp plus I am very found of Accuphase. As usually one can never be sure ... If you get to compare the two brands please post your findings. I am very interested in the comparison.

Regards,
Paul
If a home audition is not possible maybe you can bring your speakers to the dealer and listen there to the combination for 1-2 days. If this is not possible either than I am sure you can find a better dealer in Seoul.

While I do not have any experience with Accustic Arts, big and good looking equipments which you can not listen but go for cheap does not sound right to me. German products are often very well engineered and the Accustic Arts products might be indeed very good, but there is still the issue of synergy with your Alto. Since Focal Utopia Be speakers are a bit on the cold side you need to make sure your electronics are not on the cold side too. (You can always get another of the Musical Fidelity limited edition amps which while not as impressive looking as the Accustic Arts is also cheap, probably cheaper, and works very well with the Altos.)

Regards,
Paul
Bill, I find the prices you have quoted extremely high. More than 10.5 k for a KW 750 power amp must be a joke. (Here in europe one will have a hard time selling it for 3-3.5k euros.) IMO the building quality of the MF products decreased over time, i.e. Nu-Vista was better build than the Tri-Vista which in turn was better build than the KWs. You already know that MF products will not survive too many summers. Thus, definitively not a good idea to buy it as your last amp. Moreover, it will be only a side move as your Alto do not really need the extra power (your current integrated has more than enough power for them).

If I were you I with very seriously consider "local" brands, e.g. Luxman, hi-end Marantz and Accuphase. I should say that I found your dealers comments about Accuphase very strange. Compare to MF, Accuphas is really in a different league (the other two brands I have mentioned above are not far behind Accuphase, i.e. are much better than MF).

Regarding the old Utopia speakers (the models without Be tweeters), I have listen only the top of the line Grande Utopia. It was really a marvelous speaker (much better than the Altos). If this is the model for which you would consider to tread you Altos, and 1) you have the space to accommodate them, and 2) the speakers are in good shape, than by all means do it

Bill, in your post you have mentioned that the MF KW power amp was probably more expensive than the rest (ASR and Utopias which you mentioned were around $10.5k). Of course, when I said that the asking price was a joke I did not meant it as a reproach to you (It was what I would have told a dealer asking that prices). It seems that we are very fortunate here in the Netherlands when it comes to the services offer by the hi-end dealers. That is, when buying 10k components, any dealer will be willing to bring them to your home and install them into your system and will most likely also offer a 10% discount on top of that. I am sorry to hear the situation is much more different in Korea I certainly did not expected that.

I have a pair of Focal Micro Utopia Be speakers complemented with a REL Stentor 3 subwoofer and an Accuphase combo (E-550 amp and the DP-500 cd player). I am familiar with the Altos (I almost bought them twice but in the end I went for the MicroBes as I prefer monitors with a subwoofer since I find that
it is easier to integrate such a combination in ones room). About 2.5-3 years ago, before buying my current Accuphase combo, I have listen the following components driving my MicroBes:

1) Lyngdorf TDAI 2200 digital amp with room correction system. This can make a wonderful combination with the Focals (it also sounded superb with the new Focal Diablo speakers) but only if you have a very good room. It sounded beautifully in the dealer's (treated) room (where only 5-7% corrections were needed) but terrible in my home where around 30% corrections were needed. (Also note that Lyngdorf integrated amp, although a digital design, when much hotter than my Musical Fidelity A5 amp which was always only warm to the touch.)

2) An Ayre integrated and cd player combo (probably the series 7). It sounded very clean, quick and dynamic. But on some passages (e.g. some piano notes, or voice inflections) the treble could be a bit harsh and uncontrolled.

3) A Musical Fidelity A5 combo (integrated and cd player). This was my combo back then. It made a very good combination with the Focals. A very relaxed presentation with just the right amount of details and warms. I could listen to it for hours without any kind of fatigue plus it was suited for any type of music (though a bit on the polite side).

4) Various Accuphase combos (see my system page for details). Obviously, in the end I have preferred this combination the best.

Beside these electronics, over the years I have also heard good results when paring Focal Utopias with class A designs form Pass Labs and Graaf (but these will produce tons of heat), and also with Gryphon and Nagra (which might also produce too much heat) components. Mcintosh amps will also work fine.

Regards,
Paul
Bill, the MF Tri-Vista 300 is most certainly better than the A5 (so are the Nu-Vista and the KW-500/550 models). The A308 on the other hand is not. I have compared the A5 vs the A308 for a few good hours and I did not hear any difference between the two models (speakers where either the Altos or the Divas; as cd player we used the MF A5).

Jadis is also a good option for the utopias.

May I ask what did you not like about the Dynaudios compared to the Focals. Which Dynaudio models did you listen? I am asking because recently I have fallen in love with the C1s. There are very high chances these will replace my MicroBes soon.

Hi Bill, sorry for my late reply.

I heard the Micro Be with the Gryphon Tabu but it was very long time ago so I can not give you any details. While looking on the net for this Tabu integrated (I could not remember its name) I stumbled on a few sites saying that the Gryphon Tabu is identical with the NAD Silverline integrated which was sold at a fraction of the Gryphon price (2000 vs. 6000 euros) and which according to NAD was an improved version of the TABU. Gryphon on the other hand denied this. I find such stories very disturbing. (I also read here on audiogon that Focal uses 1.5$ caps in the crossover of the MicroBe.... and that one can significantly improve the MicroBes by changing those caps.)

Coming back to the Gryphon, I spent around 3-4 hours (by myself with my music) with an all Gryphon system (i.e. mirage pre, colosseum power amp, mikado cd player and Trident speakers). While the sound was not bad at all my impression was that the company strategy is to impress people with their exorbitant prices and strange looks rather than sound quality. But then this is not the first time when I had this impressions about extremely expensive systems which I can not afford.

Regards,
Paul
Hi Bill,

I am glad to read that everything worked out fine. So much for the MF being among the first 5 integrated at any price :).

Look forward to see some pics of your new system!

Best wishes,
Paul