Radial J+4 vic-firth which in this case is

which in this case is designated as a direct box out to capture the live performance

with a powerful grip set on a broad base

The Radial SB-1 Acoustic is a high-performance active direct box made for players that are on the move

And unlike older racks that require soldering when modules are used in stereo

Radial J+4 vic-firth which in this case isStereo preamp boosts signals to +4dB balanced line level Increases gain for low output instruments & music players Transformer isolated to eliminate noise caused by ground loops Plenty of connector options Plug and play easy to use The Radial J+4 is a stereo interface designed to accept unbalanced low output level devices such as instruments, computers or CD players and boost the signal to a balanced +4dB level for easy manipulation in professional