You could invesigate if Harmony can be programmed for this device but it will probaly cost you close to what the Anthem remote does.
Anthem AVM20 remote control buzzing
I've got an older AVM20 preamp (still sounds great) and the remote control just started making a constant annoying buzzing sound that won't shut off and is loud enough to hear during music. Is there a way to fix this or am I left searching for a replacement? Anthem says the factory one is $129 but would like to spend a lot less; only need basic functions. I like direct access buttons like the one that came with the preamp versus screen/menu types like Pronto. Thanks...