Krell amplifier with Hales speakers?

CAT JL2 much much better than Krell for this very very hard to drive speaker.

I used a Krell KAV 250a amp with Hales Concept 3's and found the sound a little too aggressive and bright. I had much better success using Balanced Audio Technology VK 200 with the Concept 3's. In fact, I still use the BAT with my Hales Transcendence 5's (similar sound to Revelations). If you decide to go with Krell I would avoid the KAV line and go with a FPB.

I guess that I wasn't aware that the Hales speakers are so hard to drive. THey do tend to sound on the bright side, but they are pretty good in the lower region. I have about 4000 dollars total for preamp and amplifier in my budget. I don't think that I will be able to find any fpb amplifiers at a price to leave enough for a good preamp.

These speakers are not inherently bright. Your electronics are not able to drive them properly and your speaker is telling you that very clearly.

I've got a Krell Ksa-250 driving Apogee Duetta Signatures, If you are thinking of the Ksa-150 then this is a better amp for a few hundred more. The Ksa-250's sound is a hair towards the softer side of neutral ( I've not listened to your speakers ) but do know that they drop below 4ohms at around 50hz-200hz region.

The Ksa-250 is a monster amp, this brings to the table a few problems for some people.

1. 145lb.
2. Needs 20amp circut
3. Class A to around 50 watts so runs on the warm side
4. you need one that has been serviced in the last few years, shipping on this amp is big $$$..I know because I had mine serviced about 1.5 years ago.

That said, this is a very good sounding amp and IMO sounds as good as the small FPB's..the main reason I still have mine. These can be found at around $2,200 with resent service if you take your time looking.

Dave