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BSS AR-133 Active DI Box

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BSS AR-133 Active DI Box

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With added functionality and enhanced audio performance, the AR-133 has been designed to be more affordable for musicians, studios and PA companies.

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 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. Numerous applications can be satisfied by the AR-133. For example, as well as the traditional guitar use, the AR-133 can be used with keyboards, DJ consoles, amplifier outputs, and other electronic sources.

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


Input Section

Input Impedance: 1M Ohm (pad at 0dB)
47k Ohm (pad at -20dB)
47k Ohm (pad at -40dB)
Max Input Level: +9dBu (pad at 0dB)
+29dBu (pad at -20dB)
+49dBu (pad at -40dB)
Connectors: Two Parallel 1/4" jack connectors and a parallel XLR connector (unbalanced)
Jack:: Tip Hot (+ve)
Sleeve Ground
XLR: Pin 2 Hot (+ve)
Pin 1 & 3 Ground

Output Section

Output Transformer Balanced
Max. Output Level: +8dBu into 600 Ohms or greater
Connector: XLR3-32 or equivalent

System Performance

Distortion (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.
Current drain: on phantom - less than 7.5mA
on battery - less than 2mA.
Phantom Power: +20 volts DC to +48 volts DC
Weight: 650 gms, excluding batteries.
Overall Dimensions (LxWxH): 59 x 124 x 143 mm

Shipping Estimator


Premier Quality Active DI Box ::: Phantom Power, battery or mains ::: XLR and 1/4 inch jack inputs ::: instrument, line or amplifier levels on inputs ::: ground lift switch ::: ideal for acoustic and bass guitar or keyboards

Additional Information

Brand Bss Audio
Weight 0.7000
Length 20
Width 20
Height 7
Internal Dimensions (L x W x H) No

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