Update 30th July 2018. Summer got too hot to sit in the office and practice guitar hooked up to the keyboard. I moved downstairs and started using a Yamaha THR10 Guitar Amp. I think it makes a pretty good, portable practice amp.
Although I really like what you can do with the Yamaha PSR-S970 Arranger Workstation Keyboard, I was never that impressed by the actual physical keys of the system.
