WakeOnTelnet is a simple App to remotely control your Pioneer VSX-921 receiver. It should also work with different receivers from Pioneer - as far as I know, they all use the same network protocol.
However, currently I've hardcoded the IP of the receiver, so you'd need to change that for your own receiver.
- mute / unmute
- power on / off
- volume control
- switch between input sources
- schedule sleep timers
- schedule alarms - use your receiver as personal alarm clock