Just got an Cambridge Audio M1+ and I am well chuffed with it. It's way way better than a Kameleon and nearly half the RRP. Anyway, I have noticed that it has a 'trans' button, but there is no mention of it in the manual. What does it do? Cheers. EDIT: Oh, yeah. The question was that for some reason it won't do the power on/off properly on my CA 640 AMP. It will only either turn it on or off, not both. The original remote would turn the power on and off. For example, at the moment it will turn the AMP off but never on. If I re-learn then sometimes it will start doing on rather then off (but the i have no way of turning it off, but can use the input to turn it on). Still usuable, just strange because surely the same IR signal sent from the orginal remote for on and off.