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Alto DI 1 - Direct Box

B&H # ALDI1 MFR # DI-1
Alto DI 1 - Direct Box


No Longer Available

Product Highlights

  • Single Channel
  • Active
  • High-Cut Filter
  • Ground Lift

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The DI1 from Alto is a single channel, active direct box that covers several basic functions. It can convert a high impedance signal to low impedance, convert a "hot" instrument or line level (and sometimes even speaker level) signal to a microphone level signal suitable for connection to the microphone input of a mixing console, and prevent hum and noise pick up by the use of transformer decoupling.

Housed in a rugged metal enclosure, the direct box is powered via standard phantom power, or by a standard 9V battery. The unit is equally suitable for use on stage or in a studio environment.

Professional, multi-functional DI box converts unbalanced input into balanced output for live and studio applications
Battery or phantom powered with power LED indicator
Internal battery automatically gets decoupled when using phantom power
Switchable dual input attenuators to achieve up to 40dB of attenuation
Phase and hi-cut (8kHz) switches to further aid noise reduction
Special transformer decoupling helps to avoid hum and noise pick-up
Phase problems instantly corrected through phase inversion switch
Ground loop problems eliminated via ground lift switch
Gold plated XLR connectors and phone jacks for input and link output
Rugged metal housing with tough rubber corners for protection
Type Active
Input Connections 1 XLR
1 x 1/4" TS phone
Output Connectors 1 x XLR
1 x 1/4" TS phone Link
Input Level +2/+22/+42dBm
Output Level +6dBm
Controls Input attenuation
Phase switch
Ground lift
High-cut switch
Frequency Response 10Hz to 200kHz, +/-3.0dBm @ 100kΩ
10Hz to 45kHz, +/-3.0dBm @ 600Ω
10Hz to 8kHz, +/-3.0dBm high-cut on
Noise -105dBm
Power 18VDC to 48VDC phantom power
9V battery
Dimensions (WxDxH) 5 x 4.9 x 1.7" (128 x 124 x 44mm)
Weight 1.8 lbs (0.8kg)
Specialties Ground lift switch
Alto DI 1 - Direct Box
  • One (1) Year Warranty
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    Batteries & Power

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    Required item: Batteries (not included) are required to power this device.

    Duracell - 9V Alkaline Battery (Coppertop)
    • You Pay: $3.69
    Watson - 9V Rechargeable NiMH Battery (250mAh)
    • You Pay: $7.95


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    Kopul - Studio Elite 4000 Series XLR M to XLR F Microphone Cable - 6' (1.8 m), Black
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