Hmmm, appears to be much more to it...

The Roland CM-220 is a 3-channel system with a large selection of inputs to accommodate anything you might own. Each channel has its own volume and tone controls. Inputs include 1/4" TRS, 1/8" TRS, RCA phono, digital coax, and balanced XLR and 1/4" TRS inputs. There is also a headphone out for silent practicing late at night. Whatever gear you use the CM-220 is ready to go.
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Bill