BSS AR-133 Active DI Box
BSS - AR-133 Active DI Box, Transformer Balanced and Isolated Feed from a Source Input via 1/4" TRS Jack or 3-Pin XLR
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Active DI Box
BSS - AR-133
Clean and reliable DIThe BSS AR-133 is an active DI box that 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.
Multiple 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.
at a glance
• Provides a transformer balanced and isolated feed from a source input via a 1/4" TRS jack or 3-pin XLR-type connector
• Powered by phantom power source, or via a standard PP3 type 9 volt battery
• LED indicator display for power status (phantom source or battery)
• EARTH LIFT and INPUT ATTENUATION switches
• Aluminium housing
The Tech Spec
| Features | Specifications | 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" |
