The ultimate in DI versatility. With the potential to work with both mono and stereo sound sources the Mackie MDB-1A Active DI Box lets you connect any instrument to a balanced destination with ease. A single 1/4 unbalanced input 1/4 Thru output and balanced XLR output form the basis of the box. Whilst a Merge switch lets you convert the Thru output into another input in seconds. The stereo signal is then summed to mono at the XLR output. Premium analog circuitry and high-performance components allow you to enjoy outstanding performance from a compact and easy-to-use device. A switchable -20dB pad lets you combat distortion when connecting higher level sound sources whilst being powered via 48V phantom power prevents the need for an external PSU. And with Mackies Built-Like-A-Tank construction you can enjoy premium sound for years to come.