The Radial JX-42 is an unbalanced instrument switcher designed to work best when working employing signal levels between -30dBu and 0dBu. Looking at the specifications and associated graphs, the JX-42 demonstrates a linear frequency response and minimal phase shift across the intended range which indicates that it will perform admirably well with both guitars and basses. The low noise floor, minimal crosstalk, adjustable level controls and optical switching will assure quiet performance and low switching noise even when used with high-gain guitar amps.