Hi Tim & Gurminder,
First of all let me tell you, HK675 is quite a decent amp.
Comming back to comments posted by Gurminder, as far as his cousins observation, I think its pretty misleading.
First of all why do you need a Toslink in an amp, I havent yet heard of an amp having a toslink, its basically meant for CD player as one of means of digital out if you are using an outboard DAC, that too it isnt a preffered means since its known to create a lot of jitter problems.
Secondly, an Amp has nothing to do with biwirable, all amps can be biwired depending if the speaker allows that facility.
Comming back to HK675, HK amps are pretty renowned in its price field for its power rating and high currant design, so like if youre worried if can drive the arcams, you dont need to because it surely will drive them and very handsomely, to put it shortly the amp has termendeous gutso, though it might lack some detail in compared to Rotels or Arcam, I can assure you the amp is very fast, it does not sacrifice any frequency to higlight another (unlike many other jap designs at the same price range) but then if you can afford an extra 100 bucks, you should look at Rotels or Arcams which would give you the finnesse that might be missing in HK675..
All said and done, HK675 on its own is a very decent and capable integrated amp.
I havent heard the arcam speakers you a talking about so like I wouldnt be able to tell you how it would sound together, thats upto you to listen, in any case I suggest you dont buy before you audition yourself.
All I am trying to say is that in its price range its worth looking into HK675.
Although there is one disadvantage with the HK675 and that is it does not have a pre-out, which means if you later decide to use it only as a power amp and hook up a good pre-amp, you wouldnt be able to do so.
Hope this helps.
Sandeep.
oops I just saw the date Tim posted this, guess I am pretty late.. but then I hope it helps Gurminder.