Pricing and availability
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Price
Average Price: $87
Budget/Beginner
$119
$300+
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Budget
Standard
High-end
Price History
Based on price data from 6 merchants for "Mackie MDB-2P Passive Stereo Direct Box". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
If you're on the hunt for a reliable, no-fuss solution to connect your stereo instruments to a sound system, the Mackie MDB-2P Passive Stereo Direct Box is your go-to gear. Designed with dual independent channels, this direct box seamlessly bridges the gap between your high-impedance instruments and low-impedance outputs, making it ideal for keyboards, synthesizers, and other stereo sources. With its Built-like-a-Tank™ construction, the MDB-2P is ready to withstand the rigors of both studio sessions and live performances.
The Mackie MDB-2P is equipped with two 1/4" high-impedance inputs and corresponding Thru outputs, allowing you to maintain signal integrity while routing to additional equipment like amplifiers or pedalboards. Each channel features a -15 dB pad, ensuring your sound remains distortion-free even when connected to high-output sources. A ground-lift switch is on hand to eliminate those pesky hums caused by ground loops, ensuring your performance is as clean as it is powerful.
Thanks to its passive design, the MDB-2P requires no batteries or external power, making setup a breeze. Whether you're a gigging musician or a studio engineer, this direct box will deliver consistent, transparent sound every time.
Key Features:
- Dual independent channels for stereo or dual mono applications
- High-impedance 1/4" inputs with Thru outputs
- Balanced XLR outputs with Ground Lift to reduce hum
- -15dB pads for distortion-free performance with high-output sources
- Rugged "Built-like-a-Tank™" construction for durability
- Requires no batteries or external power
Owner's manual
Mackie MDB-2P Passive Stereo Direct Box User ManualProduct specs
| Brand | Mackie |
| Model | MDB-2P Stereo Passive Direct Box |
| Finish | Black |
| Year | 2010s |
| Made In | China |
| Categories | DI Boxes |
| Electronics | Analog, Passive |
| Format | Compact Portable |
| Number of Analog Inputs | 2 |
| Number of Analog Outputs | 2 |
| Number of Channels | 2 |
FAQs
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What is the main purpose of the Mackie MDB-2P Passive Stereo Direct Box?
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The Mackie MDB-2P Passive Stereo Direct Box is designed to convert unbalanced stereo signals into balanced signals, which helps reduce noise and interference over long cable runs in live or studio settings.
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Does the Mackie MDB-2P require any power to operate?
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No, the Mackie MDB-2P is a passive direct box and does not require any external power or phantom power to function.
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How many input and output channels does the Mackie MDB-2P have?
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The Mackie MDB-2P features two analog inputs and two analog outputs, making it suitable for stereo applications.
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Is the Mackie MDB-2P suitable for use with high-output instruments?
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Yes, the Mackie MDB-2P can handle high-output sources without distortion, as it uses a transformer to manage signal levels effectively.
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What type of audio electronics does the Mackie MDB-2P utilize?
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The Mackie MDB-2P uses analog, passive electronics, which means it does not add any active circuitry noise to the signal.
Videos
Scott's Synth Stuff
Live Gear: Selecting a Keyboard Case and DI Box
Reviews
PROS
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Effectively eliminates ground loop issues across multiple audio setups
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Cleans up noise in unbalanced RCA connections
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No need for spare batteries; relies on phantom power
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Features a -15dB pad for better signal control
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Allows for combining two sources or using a "through" jack
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Offers polarity switch and ground lift for versatile use
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Well-built and durable for long-term use
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Affordable compared to other high-end alternatives
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Provides quiet and high-quality sound in various setups
CONS
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Signal attenuation may affect line-level applications
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Reliance on phantom power; may not suit all mixer setups
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Mackie MDB-2P Passive Stereo Direct Box.
Features and functionality
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The Mackie MDB-2P's 15dB pad can reduce top-end frequencies when used with passive electric guitar pickups due to impedance interactions.
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The MDB-2P outputs a balanced line-level signal instead of the expected mic-level, which can affect compatibility with some mixers and interfaces.
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The MDB-2P has an input impedance of 140k Ohms and an XLR output of 400 Ohms, impacting its interaction with certain gear setups.
Source
Comparisons
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Radial DIs, especially those with Jensen transformers, are highly rated in North America for professional use, contrasting with the Mackie MDB-2P's more limited application.
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Some users favor Klark Teknik and BSS active DIs for reliability, though experiences vary with some reporting issues even with these brands.
Source
Critic Reviews
5.0 out of 5
Based on 1 Review and 1 Rating
1539
Does what it says on the tin
It's a passive stereo D.I. I use it in the studio to get a balanced output from my guitar pedals. I also take it with me on gigs in case other bands need one. Works great, well built, looks nice. What else can be said about a D.I.?
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
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