well, i ran into some serious health problems, and i'm still recovering. my left arm is paraliyzed and is a major source of pain. i am in terrible pain each day.. so, it's gonna a be quite some time before any upgrades happen, if they even happen. i did manage an in-home audition of a competing amp. it sounded great, but it ran too hot and caused me to have high electric bills. plus, the binding posts are crap. no provison for bananas or bare wire.
anyway, that's it for now...enjoy your systems in good health. because you never know what may happen. life's too short. take care.