Here's a link to the website: http://www.holmeseng.com/index_files/Page388.htm
I use an earlier model as a backup to whatever tube amp that I take to the gig. I also use it for sitting in situations where I'm not going to put an amp on stage. It always fools the crowd but the Four is supposed to emulate a tube amp "bite" a little better. Anxious to hear one. All the best, Jay
