Check the listing for details. ART DPDB Dual Passive Direct Box. Condition: New. Listed at 65.99 USD. ART DPDB Dual Passive Direct Box Description The dPDB is a two-channel passive direct box for connecting unbalanced instrument, line, or speaker signals to balanced inputs. Each input signal is sent to a balanced, transformer-isolated XLR output and a parallel Thru jack, so it can simultaneously be connected to an amplifier on stage. Both channels feature ground lift switches to help eliminate hum, and up to 40 dB of attenuation. As a fully passive design, the dPDB doesn’t require an external power source. Passive DIs are often a great match for powered sources such as synthesizers or guitars and basses with active preamps. The dPDB provides a high-fidelity connection to a mixer, PA system, or audio interface, and offers two independent channels in a stage-proof steel enclosure. Features 2 Independent Channels1/4" TRS Inputs and Thru ConnectorsBalanced XLR OutputsSwitchable Attenuation (-20 dB, -40 dB) per ChannelSwitchable Ground Lift per ChannelPassive Design - No Power RequiredRugged Steel Case Technical Specifications Active/Passive: Passive# of Channels: 2Inputs: 4 x 1/4" TRS Balanced/UnbalancedOutputs: 2 x XLR 3-Pin BalanceddB Pad: -20 / -40 dBDimensions: 2" H x 5" W x 5.75" DFeatures: Ground Lift