Hi! This is my more detailed sound test of quilter 101 mini head - with or without effects pedals, different mics, different knobs placement on the head. What I found important that it started to feedback with master on 2 and gain on 3. So I used volume pad from my di box (you can use Lonewolf mojo pad or volume control on your mic instead). After it I've found it very harp friendly and I like it a lot :)