The BSS AR-133 is an active DI box featuring parallel jack and balanced XLR input, two tier signal attenuation and balanced XLR output.
Offering clear audio quality alongside tour ready reliability, the BSS AR-133 is an active DI box capable of being 48V phantom or 9V battery powered
Parallel jack inputs allow linking to bass and keyboard setups before stage amplification, with balanced XLR input and output allowing professional connection into audio systems.
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.
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.
| Dimensions | 59 mm x 124 mm x 143 mm (2.3" x 4.9" x 5.6") | Frequency Response | 30Hz to 20kHz, +0dB/-1dB |
|---|---|---|---|
| THD | < 0.005% at 1khz, 0dbu output | Power Consumption | on phantom: less than 7.5mA, on battery: less than 2mA. |
| Phantom Power | +20 volts DC to +48 volts DC | Output | Transformer Balanced |
| Unit weight | 650 gms, excluding batteries | Output Connectors | XLR3-32 or equivalent |
| 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) | Max Output | +8dBu into 600 Ohms or greater |
| Noise | < -105db unweighted, 22hz-22khz, rms* | Main/Standby battery | 9 volt PP3 type, preferably alkaline |
