plastic penguin:
matthewpiano:Thanks guys. I've put my mind at rest today by hearing the combination again and the Arcam drives the DB1i extremely well. In fact, as I originally thought, they sound better than any other speaker I've heard with the A18. I think the next step then would be to bi-amp with a P38 to get the next level of performance. I'm not sure where this idea comes from that the DB1i are difficult to drive. They are 8Ohms and 87dB sensitivity and, on listening, appear to be an easier load than the B&W 686s. I also notice that Hi-Fi Choice mag rates them as A+, their 'easiest' rating in terms of how difficult a speaker is to drive. I've also gone back to Chameleon SilverPlus interconnect today and it does work much much better than the CrimsonPlus with the Arcam gear.
Dopey suggestion - why not buy a power amp like a P85 for around £250-£300 mark? If that doesn't 'ring bells' then the Roksan Kandy LIII certainly should.
P85 is a good idea and will probably look to one in time.
As for the Roksan, I did think of some sort of Roksan amplifier but my dealer said both the LIII and the K2 would be a noticeable step backwards after the A18.