Just received from GK: this 500 watt combo amp with twin 12" neo drivers and a Piezo tweeter. 37lb package. Greatest and most powerful amp for easy mobility out there. Bought for my keyboards and sold the keyboard before this arrived. Absolutely mint and never used. Will ship in original GK box. Provide your zip and I will give you the Fed Ex insured ground delivery rate. $580 for the amp alone, which is an absolute steal!