Tested this some more. Set everything to 0db in output mixer and fx loop. And than unplugged the Iphone and put it on an external mixer without changing the levels of the Axe and Iphone to see if it was the same or not. With the the Axe fx the Iphone was slightly softer compared the external mixer but not much. So indeed the Iphone has a low output.
My question on this: In my case is it better to boost the level 'knob' (by 20db) in the Fx loop block or the level 3 (in my case row 3 is the Iphone) of the the output mixer? I am confused by this and not sure what the difference is.
Does an Ipad have so much higher output volume than and Iphone? since you have to reduce by 10db for the Ipad and I have to boost by 20db. Thought the output levels of these would be somewhat the same, not a 30db difference....don't own an Ipad to test this.
Row 3 level control turns up all of row 3. Fx Loop level turns up only the Fx Loop input. I'd go with the Fx Loop level, in case you out anything else in row 3.
He was saying he turns his GUITAR down 10 dB to mix with the iPad signal. I believe you think he said he turns down the iPad, which isn't right. Turning up the iPad/iPhone is the better way to go.