SIB Varidrive tube overdrive. Made in the USA. This is a tube overdrive that was made in the early 2000's. Check them out online. Reverb has some for sale. The big difference from ones you may find for sale and this one is there are two volume controls on this one and two footswitches. One to go between volume 1 and volume 2 and the other to go straight thru the pedal. Pedal will accept any 12a tube's. I contacted Rick who was the owner of SIB and he told me that this is the only dual channel model of the varidrive he made. He completed it just as the economy tanked and they shut their doors. As a collector or a user this is a rare find. $320.