I have a Fatboy 1x4, all Toshiba 2sc2879 transistors. Also have 16 feet of 4 gauge cable to go with and a T-SPEC, 1.5 farad capacitor. Works great. 900-1000 pep and 400-450 bird. Just took it out of the mobile. Never volted or over driven. Its likes about a 3 watt deadkey. Ran it with a General Lee. $400 obo or will trade for a beam antenna or a nice base station (RCI 2990, 2527 etc.) or maybe a big AC tube box that I can use with Connex 4600Turbo. Free shipping. Located in VA. Class "C" but can be bias for SSB.