Im sorry to say I dont know unclepuncle.

I'd fire off an email to Canary Audio if I were you. I'm sure they will tell you.

Incidentally, are you aware that Definitive Audio used to tinker with them and release the amp in three guises?

1. basic

2. with replaced caps etc

3. with replaced caps and a border patrol power supply.

I have a copy of hifi + somewhere that talks about the three models. If you haven't read it, it would be worth buying a back copy of the magazine (I dont mind giving you it if I can find it, but Im not an organised person and I wouldnt count on it!)

Im sure you could perform the tinkering yourself as a cheaper option if you wanted?