The server was too busy to perform a search & I dont know squat about either of these 2 amps. Neither had spec sheets on them. The GBE 400 head was'nt mated with any cabs so I didnt try it out. I didnt try the Intro 90 either. . Id like to know more about the GBE 400 head. Im assuming its 400 watts. Id like to know its specs/features. It for the time being if purchased would be mated with a 600 watt 8 ohm Carvin RL4x10. I didnt play the Intro 90 because I didnt have my bass with me and I dont see any sense of playing it with a bass thats not mine. I dont think Id get an accurate representation of my gear through the various Peaveys, Hamers, Squires, Spectors, they have. All I know is that its 1x15 90 watt combo. The price on the GBE 400 was Retail $699, but going for $489. and I believe the price on the Intro 90 was around $500 as well. Since I have no experience with Genz Benz other than some stuff Ive read about here, Id like to know if these are good deals? Im not too worried about the tone of the Intro 90, because I can always bring my bass in again and try it out. But the GBE 400 Id have to lug my cab in as well. So any advice is greatly appriciated on these.