$339

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Product Code: DBX-DI4

$339

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DBX DI4 4-Channel Direct Box

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Support: 1 Year

Warranty: 2/yr

Shipping Info

Mannys has two options for your product delivery. We offer FREE Shipping for orders over $100 (under 20kgs and 105cm) to anywhere in Australia, but if you need your gear urgently, then we also offer an Express Delivery service.

Returns Policy

Unopened items may be returned within 30 days from the delivery date for a refund, exchange or credit. Items that have been opened may be accepted back at our discretion. For more information visit our returns policy page.

35 Years. One Massive Thank You.


Mannys Means Music - and it has for 35 years. To celebrate, we're giving one lucky customer a $3,500 store voucher


Between October 1st and December 31st 2026, spend $350 or more in-store or online and enter to win a $3,500 Mannys store voucher, on us! Enter with your order number via the entry form. T&Cs apply. ACT excluded. Purchase must be made between October 1st and December 31st 2026, 11:59pm AEDT. Entries close January 11 2027, 11:59pm AEDT.

Product Information

The DBX DI4 is a four-channel active direct box and line mixer housed in a compact half-rack unit, designed to convert unbalanced instrument signals into balanced XLR outputs for mixer and PA use. Four independent DI channels share a chassis measuring just 44.5 mm tall, with each channel offering its own 20 dB pad and ground lift switch. The unit also functions as a stereo line mixer with RCA master outputs, enabling keyboardists and electronic musicians to consolidate multiple sound sources into a single rack unit with independent front-of-house and monitor sends.

Each of the four channels accepts 1/4" TS unbalanced input with 320k ohm input impedance, handling peak levels up to +15 dBu before engaging the pad. Balanced XLR outputs deliver +16 dBu maximum with 600 ohm output impedance and a frequency response of 20 Hz–20 kHz. THD+noise measures just 0.0008% at +4 dBu, while interchannel crosstalk remains below -90 dB across the full audio spectrum. The front panel provides individual volume and pan controls for each channel, feeding a stereo RCA line mixer output on the rear alongside a 1/4" headphone jack with dedicated master volume control.

The DI4's dual functionality addresses stage and studio scenarios where multiple keyboards, samplers or modules require both balanced outputs to a front-of-house console and a separate monitor mix. Independent pan and level adjustment per channel allows precise stereo placement and balance without touching the main XLR outputs. Universal AC power supply accepts 100–240 V at 50–60 Hz, consuming just 775 mW during operation. The unit weighs 1.75 kg and occupies minimal rack space, making it straightforward to integrate into touring rigs or permanent installations.

Features
  • Four independent active DI channels in compact half-rack 44.5 mm chassis
  • 1/4" TS unbalanced inputs with 320k ohm impedance, +15 dBu peak level
  • Balanced XLR outputs deliver +16 dBu maximum with 600 ohm impedance
  • Independent 20 dB pad and ground lift switch per channel
  • Stereo line mixer with individual volume and pan controls per channel
  • RCA master outputs and 1/4" headphone output with dedicated volume control
  • Frequency response 20 Hz–20 kHz, THD+noise 0.0008% at +4 dBu
  • Universal AC power supply 100–240 V, 50–60 Hz, 775 mW consumption
For more information, please visit the manufacturer's website.