The BSS AR-133 Active Direct Box / Line Balancer from DJDeals.com 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 for 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 as a reference standard. The sound quality is legendary, particularly on acoustic and bass guitars. The AR-133 can be used with keyboards, DJ consoles, amplifier outputs, and other electronic sources.
Features
Switchable input attenuation
Matches level and impedance with unity gain without loading the source
Powered by 48V phantom power or 9V battery
Parallel XLR input for converting unbalanced outputs to balanced lines
Parallel Link Jack output to feed amps directly
Specifications
Input Section:
Input Impedance:
1 Megohm (pad at 0dB)
47k Ohms (pad at -20dB)
47k Ohm (pad at -20dB)
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 1 kHz, 0dBu output Noise: < -105dB unweighted, 22 Hz - 22 kHz, rms Frequency Response: 30 Hz - 20 kHz, +0dB/-1dBGeneral: Main/Standby: 9 volt PP3 type, battery preferably alkaline Current drainPhantom: less than 7.5mA Battery: less than 2mAPhantom Power: +20 to +48 V DC Weight: 650 grams, excluding batteries Overall Dimensions: 2.3" x 4.9" x 5.6" (59 x 124 x 143mm)