Hey all, You all know what this is, but I'm happy to answer questions if you don't. This model has the gold chip and the switch and is a generally fantastic amp. I swore I'd never sell it, but I bought it a long time ago and have only gigged with it twice. It makes a fantastic practice amp sitting in my living room on top of my Acme B2 but I just haven't had need for a power amp with anything I'm doing (I am usually either recording or running direct into the PA). It remains one of the best bass heads I've ever owned and if I thought for a minute that I'd have a use for it anytime in the next five years, I'd be keeping it. It looks like new and is in great shape. Pics on request. It's lived in a rack since I got it and I think I have the feet somewhere if you want to de-rack it. $725 shipped takes it. I have a handful of things I'd do for a trade but I mostly want the space and the money so cash is king.