Palmer PAL-PGA03 Y - Splitter For Guitars"When I run my guitar into two amps simultaneously, I always get a loud hum". This is a rather common problem, often discussed in the technology section of relevant industry magazines. The Palmer Y box is the solution. Converting the hi Z guitar signal, the FET input circuitry also drives a transformer which routes the ungrounded signal to the output to eliminate ground loop hum. 9V battery operation is recommended. The PGA03 Y box can also be used as