Professional quality, passive direct box for connection of unbalanced musical instruments, line level sources and guitar amplifier outputs to Low-Z balanced microphone input for PA or recording. 1/4" (6.35mm) input (with parallel 1/4" (6.35mm) output); switches for speaker/line-level attenuation; high cut filter and ground lift; male XLR type balanced output. Uses DBT-1 transformer (20K/150 Ohms).