Rapco DB-1 Passive Direct Box 

The DB-1's simple design offers reliable input jacks as well as a loop-through 1/4 inch jack.  Plug any instrument level signal (and some line level) into the box, interface with a standard XLR mic cable into the Lo-Z output, and you're ready to plug the output "directly" into a mixing console.  A ground lift switch is provided for buzz-free operation in almost any environment.

• Approximate size: 3 3/4"(w) x 4 1/8"(h) x 1 7/8"(d)
• (1) XLRM    XLR male panel mount
• (2) 1/4     Stereo panel mount
• (1) DBT     Transformer
• (1) Switch    Panel mount ground lift switch