I have just completed training on your IR range. What I would like to suggest is if it would be feasible to be able to control the modulator frequency. (A phase locked loop should be able to achieve this). This way your units should be able to control pieces of equipment such as the B&O equipment that do not use standard modulator frequencies. I have a vision of your 2-channel IR transmitter with each channel on a different modulator frequency. What could be even better would be to designate the frequency on the fly this way it will be possible to use a dual emitter lead from one channel to control to dissimilar pieces of equipment. Device ID - Channel ID - Mod Frequency - Output Code. While I am stretching the limits how about talking to PC's allowing PC's and Palms to control the system via IR. Colin Smith