STEVE VAI SIGNATURE - DUAL CHANNEL ALL-TUBE SYNERGY MODULEThe Steve Vai tube preamp is the first Synergy signature module. The VAI module is the outcome of months of designing, testing, and tweaking until Synergy met Steves exacting standards. The blue channel (bottom) delivers everything from sparkling cleans to slightly broken up American tones. The FAT and BRIGHT switches let you fine tune your sound. The top red channel offers everything from the drop tuned rage of Bad Horsie to the opulent harmonic