Hi Guys, Hoping Jim or someone can help me out. I love my HD 500 and I've been using it for months through my Studio monitors. Love the tones that I can get! Last week, I purchased a Jet City 20 watt JCA22h Head. I went exactly to the tee of Jim's tutorial & various You tube videos. I can get the 4CM to work, BUT there are 2 MAJOR issue's for me: 1. Its a 2 channel amp. When in the 4cm mode, I cannot engage the jet city foot switch. Its dead. I can not change over from crunch channel to overdrive. The footswitch becomes dead. 2. My 2 volume controls on my amp become dead when I'm connected. My Pod takes over for the volume control...odd? Input 1 Guitar, Input 2 Variax My signal layout is Noisegate - distortion- wah - studio eq - fx loop - delay - reverb - mixer. Mixer is set path a center -1.5db, path b mute. I'm really hoping someone can shed some light on this for me. I really wanted to use the hd 500 with my head. Thanks.. Patrick PS I just tried using my peavey ultra plus head as well, and I must be doing something wrong... The foot switch does not work when I use the hd 500. Meaning I cant switch between channels..