I recently purchased the Integra DTC-9.4. I like the unit and I'll hopefully get around to writing my thoughts for the board. However, it does have one 'flaw.' The Zone 2 output is a fixed volume signal (instead of variable). Consequently, I need a way to control the volume for the second zone. Any thoughts? Perhaps a clean but cheap preamp? BTW, is it me or does this sort of implementation make little sense?