Description française :

BSS - AR-133 - Boîtier de direct actif

La seule manière d’obtenir une liaison de qualité à partir d’instruments est l’utilisation de boîtes de direct actives. L’AR133 est équipée d’un amplificateur d’entrée, à sortie symétrique sur transformateur qui assure une réelle isolation galvanique. L’AR133 prend son alimentation sur le circuit de 48Vfantôme de la console, ou depuis une pile interne 9 volts.

Une led en face avant témoigne de la présence de 48 V. En cas d’absence de l’alimentation 48V, la pile interne prend le relais, en signalant le problème par un clignotement de la led. Un interrupteur isole la masse du circuit d’entrée de celle du circuit de sortie, afin de prévenir des éventuels "bouclage de masse".

Le transformateur interne,complètement blindé, assure une réjection maximale de tous les parasites électromagnétiques.

Caractéristiques techniques :

  • Réponse en Fréquence : 30Hz - 20kHz, +0/-1dB
  • Distorsion + Bruit: < 0,005 % à 1 kHz, 0 dB
  • Rapport Signal/Bruit: 22 kHz
  • Dimensions : 145 mm x 125 mm x 59 mm
  • Poids : 650 g (sans la pile)

English description :

BSS - AR-133 - Active DI Box

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.


  • 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
  • Weight : 650 gms, excluding batteries
  • Dimensions 59 mm x 124 mm x 143 mm (2.3" x 4.9" x 5.6")

Please note that we sell European 220/240v versions, most of which can be switched to 110/120v if needed, either directly via the hardware next to the power supply, or via an external power transformer, don't hesitate to contact us if you have any questions.

ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
  • AR-133 Active DI Box

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