While some Rogue amps can be a bit suspect this one gets some good reviews. For $149 it sounds like a great deal to stop your guitar player plugging into your K4. And a stereo chorus amp will work fine for jazz guitar so I think you made a sound purchase.

Owning a Traynor K4 myself I can understand why he liked plugging into that lol. The K4 is a great all round combo amp.

You made a wise decision to jump on this Chas.