Palmer PGA 03 Y-Box Guitar Splitter, Y-Box Guitar Splitter@+PALMER Y-Box, splitbox for guitar signals. ""When I am connecting the inputs of my two amplifiers, there is a strong hum."" A frequent query in the technical section of relevant specialist magazines. The solution to this problem is the Palmer Y-Box. An FET input circuit converts the high-impedance guitar signal and, at the same time, forms the driver circuit for a transformer that directs the signal to the output ground-free. The hum loop is avoided. Operation with 9 V battery recommended. @+@+The box can also be used as cable driver for large cable length. In addition, it is possible for the output AMP2 to phase-shift the signal. This is often necessary when two (pre)amplifiers are connected in parallel., Clinking input with 1 Mohm input impedance, Output AMP1 as parallel circuit, Output AMP2 is electronically converted with a subsequent transformer stage, Operation with 9V battery recommended, 5 years manufacturing guarantee