Item number: 10048195
JustIn

JustIn A1 Pro

Active DI box
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The Justin A1 Pro is an active mono DI box that differs significantly from conventional mono DI boxes due to its features. This DI box has a level reduction switch (0-15 db), ground lift switch, 180 degree polarity switch and switchable low cut filter (-6dB@80 Hz). Another top feature is the merge function, which allows 2 unbalanced input signals (6.3 mm jack) to be routed and balanced to a mono XLR output. Thanks to the ground lift switch and real transformer balancing, the line signal is decoupled from the ground and hum loops are skilfully suppressed. With a dynamic range of 130 dB, this DI box offers plenty of headroom for distortion-free transmission. The professional helper for stage use!Without DI boxes, daily stage use would be almost inconceivable, whereby DI stands for direct injection. DI boxes ensure that a clean line signal from the stage always reaches the FOH's mixing console. With increasing cable length, the resistance in the conductor for the electro-acoustic line signal increases, so that level loss is recorded for transmissions over 20m. Using a DI box, these level losses can be compensated by converting an unbalanced signal (guitar, bass, synth) into a balanced signal. Balanced signal paths increase the line level by 6dB, which means a doubling of the volume. Since the noise floor is also increased when using a DI box, noise signals that can interfere with the transmission are suppressed, which can lead to an improvement in audio quality.Furthermore, DI boxes convert high-impedance line signals into low-impedance signals, thus providing a balance between signal source and input. Electric guitar pick-ups, for example, are high-impedance signal sources.
  • Dynamic range: 130 dB
  • Signal-to-noise ratio: 119dB@100Hz
  • Harmonic distortion @20Hz: 0.5%
  • Power supply: 48 volts / 5 mA external phantom power
  • Frequency range: 10 - 40.000 Hz
  • Input impedance: 220 K Ohm
  • Output impedance: 600 Ohm
  • Input; 2 x 6.3 mm jack unbalanced
  • Output: 3 pin XLR balanced, 6.3 mm jack unbalanced (Right/True)
  • Dimensions: 120 x 90 x 45 mm
  • Weight: approx. 0.24 kg
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