An annoying problem of Code 50 concerns the sound of low frequencies which are extremely "muddy"
using a Stratocaster's bridge single coils: absolutely no attack & non-existent twang!.
I really like this amplifier and I am sure that with a firmware update this problem can certainly be solved
My current firmware version is 1.44.
Sorry you seem to be having issues with this, could you please email firstname.lastname@example.org , with complete setup and we will look into this for you.