I have only tested it in at home (my player isn't mounted in my car at the moment). I have been aware of the problem for a few weeks now, I had to downgrade to 1.03 when I demo'd my Mk2a to a potetial new empeg owner to other day. Downgrading fixed the problems, going back to 2.0b3 and now 2.0b7 brought them back.

I need to check that my Mk1 has the same problems, it definitely has distortion problems, but I'm not sure if they go away with 1.03