Jm Lab Alto Utopia what kind of amplifier ?

Thank you Paul for your recommendations, I have tried Accuphase E560 and it was OK, but not really a good match. It actually sounded better with my Dali Helikon 300. I think that Utopia needs good tube amplification to shine.
By the way I just noticed that you have a new room and a very nice upgrade Accuphase separates! Congratulations, do you still have your Jm lab Micros?

I have a local dealer that carries both Rowland and the Utopia line. I have heard the Alto's with both the 302 and the battery supplied Model 10.

Zszwedo, OTL are just amplifiers. Like all amplifiers, they work with some speakers and not others, and some OTLs sound better than others.

People often talk about OTLs are like they are somehow something 'other'... but they compete quite nicely against traditional amplifier designs. If you like speed, transparency, neutrality and smoothness all in one place they can be a good option.

Tube amps in general need more attention than transistors. Some OTLs need a lot of attention. Ours tend to need very little- bias is automatic and the amps are quite stable- more so than most 'conventional' amps.

However in my last post I was not talking specifically about our amps, but they do work well on JM Labs. Our amps tend to run a little hotter, not (as most people think) because of the tubes, but because they are class A amplifiers.

Hi Zszwedo, I did not suggested you to pair the Altos with the E-560
integrated. You were talking about a pre/power combinations. :)

The Altos deserve/need a bit more power than the E-560 can provide (an
A45 or A46 power amp should be find though). The Helicons sounded better
with the E-560 because the amp was probably much more comfortable when
driving them. (I too have had the Helicons 300 and I have also listened the
Helicon 400 and the Euphonia 400 speakers. To my ears the Focal Utopia Be
speakers where much better than any Dali speaker.)

Try using a high end hybrid amp.
A good friend has an AltaVista NP100 Platinum build driving his Altos.
Does the beryllium tweeters justice and has enough current to deal with the flabby woofer.