The Whirlwind DIR Studio or PA Direct Box converts an unbalanced line, instrument or speaker level signal to low impedance balanced microphone level, which is then suitable for imputing to a console or microphone preamp. The unit is a passive device and therefore requires no external power supply. The unit features a ground lift switch and a 30-dB pad for selecting between line/instrument or speaker level signals. Product Specifications Input Connections: 1 x 1/4" TS phone Output Connectors: 1 x 1/4" TS phone, 1 x XLR Input Level: Not specified by manufacturer Output Level: 20 dB below input level Frequency Response: 20 Hz to 20 kHz, +/-1 dB Noise: Not specified by manufacturer Power: Passive Dimensions: 3.5 x 4.5 x 1.4" (89 x 114 x 36 mm) Weight: Not specified by manufacturer Specialties: Uses Whirlwind's TRHL-M transformer with metal shield Package Weight: 1 lbs Box Dimensions (LxWxH): 7” x 7” x 2"