BOSS Katana:Go - Personal Headphone Amplifier CLICK NOW>

New DV3 - Desktop Monitor Speaker by Adam Audio SHOP NOW

Toontrack EZDrummer 3 - Over 2,500 unique grooves & fills CLICK NOW

Mackie MDB-1A Active DI Box

Mackie  |  SKU: 2049173-00

Product Highlights

  • Active DI For Guitars, Bass & Keyboards
  • High-Impedance 1/4” Input With Thru Output
  • Balanced XLR Output With Ground Lift
  • Merge Switch For Summing Stereo Sources To Mono
  • -20dB Pad For High-Level Signal Handling
  • Low Cut & Polarity Switches
  • Phantom-Powered (48V)
  • Rugged “Built-Like-A-Tank™” Metal Enclosure

Mackie | Brand Profile, why buy?

Mackie - Sound like you mean it!

Mackie Audio Gear is known for its superb sound and dependability, which comes from its rock-solid build quality.

The Mackie USB mixer range features the award-winning Onyx preamp technology, designed to capture pristine live audio, home recordings, and content creation at an affordable price range.

Take your stage anywhere! with the Mackie Thump enhanced powered PA range of loudspeakers. Or choose the Thump GO, a portable battery-powered loudspeaker perfect for live performances, classes and busking.

Shop the Mackie collection NOW>

Mackie mixers and loudspeakers to suit any budget now available at Audio Direct with free uk delivery and a price match promise

Regular price £80.00

Expert Advice, Click for Help

Need help? Call us on: 02476 369897

Use Live Chat or e-mail us directly at: sales@audiodirect.co.uk

OPEN: Mon to Fri - 9am to 5pm (Closed Sat/Sun)

We are more than online retailers, our sales staff have a passion for making music and give honest frank feedback on their experience with your chosen product. Call us for a chat or read all about us HERE>

FREE Delivery & Easy Returns Info

DELIVERY

FREE Mainland UK Shipping for orders over £99 (Standard Service 2-3 days)

£3.99 per order for orders below £99. (Standard Service 2-3 days)

FAST Delivery Needed? We got you! find express delivery options at checkout or read our: Comprehensive delivery information HERE>

EASY RETURNS

Not completely happy with your audio gear? No problem! simply return it back to us for a full refund within 60 days of purchase.

Find comprehensive return T/C instructions HERE>

Why buy Mackie from us?

  • Official Mackie retailers, for over 25 years
  • Est. in 2001, 25 years of 5-star reviews
  • Expert advice, before & after your purchase
  • Manufacturer warranties you can rely on
  • Price match promise, never knowingly beaten on price
  • Confidence at checkout. 100% Secure shopping
  • FREE UK delivery on purchases over £99.00
  • Fast next-day delivery, trustworthy delivery partners & secure packaging
  • Quick & easy 60 days returns

We are more than online retailers. We have a passion for playing, making, and recording music. We only sell Mackie products that we would be happy to use and that you can rely upon.

Read All About Us HERE>

Description

High-Headroom Active DI – Mackie MDB-1A Active DI Box

The Mackie MDB-1A Active DI Box is ideal for instruments and devices with active electronics, such as basses, guitars, and keyboards with preamps. Its active circuitry provides increased headroom and ensures distortion-free performance, making it perfect for both live and studio environments. The MDB-1A converts high-impedance, unbalanced signals into low-impedance, balanced outputs, ideal for connecting to mixing consoles or audio interfaces.

Designed for professional applications, the MDB-1A gives you flexible control with Polarity, Low Cut, and Ground Lift switches. Its Merge function allows stereo sources to be summed to mono, while the -20dB pad protects against high-output signals. With phantom power operation and Mackie’s rugged construction, this DI box delivers reliable, clean sound wherever you need it.

Flexible Control For Active Instruments

The MDB-1A features a high-impedance 1/4" input with a Thru connection for routing to stage amps or other devices. The Merge switch converts the Thru jack into a second input, perfect for combining stereo signals into a single mono output. The XLR output provides balanced audio with low noise, and the -20dB pad ensures that even hot signals stay clean. Phantom power operation simplifies setup in studio and live environments, while the durable metal housing ensures long-term reliability.

KEY FEATURES: Mackie MDB-1A Active DI Box
  • Active DI Design: Provides higher headroom for ultra-low noise and distortion-free performance.
  • High-Impedance Input & Thru: 1/4" input with Thru output for flexible routing to amps or stage gear.
  • Balanced XLR Output: Low-impedance output ensures clean, noise-free audio for mixers and interfaces.
  • Merge Switch: Combines stereo sources into mono, ideal for keyboards and media players.
  • -20dB Pad: Reduces signal level to prevent distortion from high-output instruments.
  • Low Cut & Polarity Switches: Helps control low-end rumble and phase issues in complex setups.
  • Phantom Power Operation: Works with standard 48V phantom power from mixers or interfaces.
  • Rugged Construction: Built-Like-A-Tank™ metal enclosure for professional touring and studio use.

Specification

  • Frequency Response: 20Hz to 20kHz, +/-0.5dB
  • Signal-to-Noise Ratio: 90dB
  • Dynamic Range: 130dB
  • Total Harmonic Distortion: 0.02-percent THDF at 1kHz
  • Pad: -20dB
  • Input Type: Female 1/4'' unbalanced
  • Input Impedance: 330k Ohms unbalanced
  • Output Type: Male XLR balanced, 1/4'' unbalanced (thru)
  • Output Impedance: 150 Ohms unbalanced
  • Display LEDs: Front Merge ON/OFF
  • Power Requirements: 48V phantom power
  • Current Draw: Less than 4.0mA DC
  • Dimensions: 38mm x 86mm x 147mm / 1.5'' x 3.4'' x 5.8'' (H x W x D)
  • Weight: 0.4kg / 0.8lbs
Warranty
  • 1-Year from the date of purchase

What's in the box?

  • Mackie MDB-1A Active DI Box

Downloads & Manuals

Need help? Call us on: 02476 36 98 97

We are more than online retailers, our sales staff have a passion for making music and give honest, frank feedback on their experience with your chosen product.

OPEN: Mon to Fri - 9am to 5pm (Closed Sat/Sun)

Huge range of Guitar Pedals and Accessories by BOSS, Electro Harmonix and NUX all with free uk delivery