Pro Co DB-4 4-Channel Passive Direct Box

Pro Co DB-4 4-Channel Passive Direct Box

The DB-4A from Pro-Co Sound provides four independent "direct-box" channels, housed in a single space, rack-mount chassis. The unit is ideal for the electronic keyboardist and equally well suited to any application requiring the interfacing of unbalanced high-impedance equipment with balanced low-impedance mixer inputs.

The design of the DB-4A allows easy integration with any audio system. Three unbalanced, parallel-connected input/output jacks make "patching in" at virtually any stage of the signal path, a simple task. Signals may be taken straight from the instruments or from sub-mixer outputs.

The unit is housed in a durable chassis constructed from 16-gauge steel and aluminum, utilizing a "uni-box" enclosure. Internally, the specially designed transformers combine superb audio quality with generous noise rejection.

• Four channel passive direct box for electric/bass guitars
• Floating transformer-balanced XLR output for maximum isolation
• Four independent channels for four keyboard, drum machine outputs, etc.
• Three In/Out jacks per channel for convenient loop-through
• Line mode handles signal levels to +34dBv
• Ground lift switch eliminates hum and buzz
• Rugged "uni-box" construction for super strength and shielding
• Passive design requires no batteries or phantom power

Pro Co Sound DB4A Specs

• Type
• Passive
• Input Connections
• 12 x 1/4" TS phone 
• Output Connectors
• 4 x XLR
• As per input
• Input Level
• +26dBv (instrument mode)
• +46dBv (line mode) @ 50Hz
• Output Level
• Not specified by manufacturer
• Controls
• Ground lift per channel
• Instrument/line selection switch per channel
• Frequency Response
• 20Hz to 20kHz, +/-0.5dB @ -15dBv output
• Noise
• Not specified by manufacturer
• Power
• Passive
• Dimensions
• 19 x 4-3/4 x 1-3/4" (483 x 121 x 45 mm)
• Weight
• 4.4 lbs (1.6 kg)
• Specialties
• Custom-built impedance-matching transformer optimized for use with high-impedance sources such as electric guitars and basses. It is also very applicable to other unbalanced sources such as keyboard instruments