Got this as a solid state back up for my tube amp. Just ordered a pf500 for that purpose. This 400rb is super clean, looks like it has been played in someones bedroom for 25 years.
It has the effect loop issue. You have to keep a patch cord in the loop or the amp will cut out on you. With the cord in, no problems.
Heres a link to the original add
FS: Gallien Krueger GK 400RB
$225 shipped
