McIntosh C46 makes distorting pops thru speakers


Just hooked up McIntosh C46 to a Parasound HCA-2200 Mark II via balanced cables. The C46 makes these very loud distorting popping sounds through the speakers when it is turned on or off. The popping sounds are more prolonged when the C46 is turned off. My normal sequence of turning on the system is power amp, preamp, and source. Turning off the system is just the reverse. However, the popping does not happen when the C46 is turned on before the power amp is turned on. Also the popping does not happen when the C46 is turned off last. Using unbalanced cables do not help.
sfaudiobuff
My C48 can operate either way in shutdown or turn-on and theres's no noise problem. However, I'm using a Mac amp. Balanced or unbalance doesn't seem to matter. I'd do whatever way suits you best, as that's all that matters anyway. Perhaps the Parasound amp's relays are allowing more decay time than they should.
Do not turn off you preamp before poweramp is completely off and do not turn on your amp untill preamp is completely on with any components you use.