What would you run before the clean channel of your AG500? I'm in love with Channel 2 (the dirty one). It nees no tone modification at all. However as of late, I've been wanting to modify the tone of the clean channel on the AG500 to give it a little more "tubeyness" and "girth" to the sound. I've been running the Avalon U5 with the Active Thru on into the AG500. It works wonders for the 2nd channel giving the overdrive circuit a beautiful warmth. However with the limited EQ capabilities on the Avalon, channel 1 feels like it lacks something at times (at least in comparison to channel 2). Shoudl I continue with the Avalon or try sticking in the DB680 in it's place to see if that changes things around. Avalon U5 Pro's: Sound Guys Love Them Light @ 8.5 lbs Has defeatable options of using the tone circuit/eq or not Sounds Good Front Mounted Unbalanced Out Avalon U5 Con's Relatively limited EQ May not be the tone I want for the clean channel DI isn't muted when tuning, so the audience can hear me. Aguilar DB680 Pro's: Has a great sound that I've always loved Parametric EQ Tubes & Therefore Tube Warmth Has multiple inputs on the front and back. Aguialr DB680 Con's: Weighs a little bit more @ 17lbs (minor) Has Tubes and Therefore can spring relatively more problems Rear mounted unbalanced outs (minor) Sound guys aren't as familiar or comfortable using the DB680 as a DI/Pre in the live setting. Not as convienent as the avalon to do an input thru They are both 2 spaces and won't take up much more room. Any thoughts?