Join Date: Dec 2000
Location: Toronto, Ontario, Canada
When using the headphones, are you auditioning some different cab models to combine with your existing sounds? That's a big difference; making sound patches that are good through power amp/speakers will tend to sound rather shrill though the 'phones, even though the AIR comes on automatically with the 'phone jack engaged.
Try different cab models in that situation; if you haven't tried this, I suspect you'll be pleasantly surprised...