Colleagues: I've had the Helix a month and it's fantastic and I'm definitely keeping it. The versatility (especially using IRs) is amazing. But my experience is a bit similar to "joseroys" who started a thread 2-14-17 with a title like I used here. I have a high-frequency "fizz" that spans the spectrum when using a flat global eq (turned off). Rather than take up any time now with what I'm using , etc., if a couple folks could simply recommend factory presets that they find have a clean sound no ovedrive) with global eq off, I will take a listen and be sure my unit is OK. I want to be sure I'm hearing what you're hearing. I've been a guitar player for nearly 50 years and have played in the modeling/digital realm since I bought my first POD a long time ago and I can be hyper sensitive to certain sounds. I can get the tone I want using global eq with a couple eq's in the signal chain, but I need to do significant adjusting when going between my ultra strat and PRS custom 24. I have been reading the forum on this and other topics for a couple weeks and that really helped me get control of the Helix sound. Thanks in advance for your replies! Doug