Question for First Sound Owners


I currently have a first sound deluxe mkII. I'm thinking of replacing my Jadis DA-8 amp. I recently tried a conrad johnson amp and they did not match. The sound was congested and lifeless. I have heard the CJ amp sounding good so I guess this is more of a matching issue. In this regard, i'd like to know what amps you guys are using so i can avoid purchasing something that will not match the FS. TIA.
eps
I've tried my FS with Jadis and Hurricanes and they worked quite well. Although it didn't do well with the CJ 11A, suprisingly different results with Drubin.

I always check that the tubes are working properly. Also, i make sure that polarities are reversed.

Thanks for all your inputs.

Cheers.
It would help to at least know your speaker and the sensitivity/ Impedance.... That being said, I am getting excellent results with a First Sound pres del 2 and VAC 220 Sig amps driving the Vandy 5a. There is a synergy between these 2 components in combo with the rest of my system.
I am using the H2o Signature Monoblocks with the First Sound Presence Deluxe Mk II and am very pleased with the synergy. There is a review of the amps on http://www.6moons.com if the amp is of interest to you...
I'm using the First Sound with a Music Reference RM-200 tube amplifier with excellent results. I feared the low input impedance of the RM-200 (15kOhm) would be a problem, but it sounds great to me driving Hot Rod Shearwaters.