A.If you want to connect two (or more) CUBE-60 units, connect the TUNER OUT jack of the first CUBE-60 to the INPUT jack of the second CUBE-60. You can connect as many CUBE-60 amps as you like in this manner. (The TUNER OUT jack outputs the dry (unprocessed) guitar signal.)
In general, if you use two (or more) guitar amps, the radiated sound from the speakers will be combined, resulting in a fuller, more spacious sound. Additionally, you can create an even richer sound by varying the settings on the different amps.
(2005/08/11)