I have just aquired a Line 6 amp direct from the factory that is signed by Riggs. The Signature has Riggs autograph, and has "Scum of the Earth" and "Best obscene wishes" written on it. This is THE amp used to create the 4 Riggs presets that are found on the Line 6 Spider 3 amps. This is a "prototype" for the spider 3, it is a 1x12 75 watt spider 2 that has a tag covering the model number that says #13, to designate the fact that it is a prototype. Also the 4 presets that are found in the spider 3 are still stored in this amp when Riggs himself created them. If anyone has a serious interest in purchasing this amp, just post a message and I will check back soon.