GPSS-650: Can it handle outboard floor pedals such as chorus, phasor, compression/sustain? Certainly! Plug your guitar or bass into the pedals and then into the GPSS inputs. No problem! Product: GPSS-650 Related articles GPSS-650: Are there any onboard FX available? GSW-T1500PK: How long does it take to charge battery? GPSS-650: Can I play my mic or instrument through two linked speakers?