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BSS Audio


BSS Audio AR-133 Active DI Box

The BSS Audio AR-133 is an active DI box. One of the toughest most versatile DI boxes on the market, the AR-133 is apt for guitars, keyboards, DJ rigs, instrument amplifier outputs and other electronic equipment - live or in the studio. The AR-133 offers 1/4" and XLR input connectors, and an XLR output. Ground switch, pad and link jack available too. 


      The unit includes phantom power and battery supplies as standard. Should the phantom power from the console fail or be accidentally switched off, the AR-133 automatically switches over to the internal 9V battery providing uninterrupted use.

      The unit is housed in a rugged aluminium extrusion case, with robust polyurethane end-cheeks which give the AR-133 a very distinctive look.

      Input connectors are both 1/4" jack sockets and an XLR socket, the latter meaning that the AR-133 can be used to convert unbalanced signals to a balanced output on XLRs throughout.

      The arched case allows cables to run back underneath the unit from the end for neat cable management.

      Input attenuation is 0, -20 or -40dB, making the box suitable for instrument, line or amplifier levels on inputs. On the output side, a ground-lift switch is provided for quick solutions to ground-loop problems.

      The AR-133 uses an enhanced version of the same audio path as the AR-116, now regarded by many people as a reference standard. The sound quality is legendary, particularly on acoustic and bass guitars.

      An additional bonus is the ability to use the AR-133 as an active balancing device.

      Input Impedance: 1 mOhm (pad at 0dB), 47 kOhm (pad at -20dB or -40dB)
      Max Input: +9dBu (pad at 0dB), +29dBu (pad at -20dB), +49dBu (pad at -40dB)
      Input Connectors: Two Parallel 1/4" jack connectors (Tip Hot +ve, Sleeve ground), and a parallel XLR connector (unbalanced) (Pin 2 Hot +ve, Pin 1 & 3 ground)
      Output: Transformer Balanced
      Max Output: +8dBu into 600 Ohms or greater
      Output Connectors: XLR3-32 or equivalent
      THD: < 0.005% at 1khz, 0dbu output
      Noise: < -105db unweighted, 22hz-22khz, rms*
      Frequency Response: 30Hz to 20kHz, +0dB/-1dB
      Main/Standby battery: 9 volt PP3 type, preferably alkaline
      Power Consumption: on phantom: less than 7.5mA, on battery: less than 2mA.
      Phantom Power: +20 volts DC to +48 volts DC
      Unit Weight: 650 gms, excluding batteries
      Dimensions: 59 mm x 124 mm x 143 mm (2.3" x 4.9" x 5.6")
Need more info on the AR-133? Click HERE for the official BSS Audio product listing >>>