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Average Price: $196
Standard/Professional
$119
$300+
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Price History
Based on price data from 7 merchants for "Radial Engineering ProD2 Stereo Direct Box". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Experience Superior Audio Quality with the Radial Engineering ProD2 Stereo Direct Box
In a world where audio quality can make or break your performance, you need gear that you can rely on. Allow us to introduce the Radial Engineering ProD2 Stereo Direct Box. This premium tool is designed to provide superior signal transfer without compromise.
This direct box is engineered with two proprietary custom transformers that ensure a linear frequency response, ultra-low distortion, and zero phase distortion. This means you get pristine audio quality, whether you're performing live or recording in the studio.
The ProD2 is not just about delivering excellent sound. It's also designed to eliminate hum and buzz from ground loops through transformer isolation, making your setup quick and hassle-free. This feature ensures a pure signal path from your instrument to the mixer or recording device.
But the ProD2 isn't just about performance. It's also built to last. Despite its premium performance, it's constructed with a 14-gauge steel chassis and a durable baked-enamel finish to withstand the rigors of live use and repeated setup and teardown.
Key Features: - Proprietary custom transformers that provide linear frequency response and ultra-low distortion - Transformer isolation to eliminate hum and buzz from ground loops - Rugged construction with a 14-gauge steel chassis and durable baked-enamel finish - Simple yet versatile operation with intuitive controls and connections - Exceptional sound clarity and definition - Ideal for various instruments including acoustic guitars, bass guitars, electronic keyboards, drum machines, samplers, and more.
Owner's manual
Radial Engineering ProD2 Stereo Direct Box User ManualProduct specs
| Type | Passive DI |
| Channels | 2 |
| Pads | -15dB |
| Ground Lift | Yes |
| Inputs | 2 x 1/4" |
| Outputs | 2 x XLR, 2 x 1/4" thru |
| Height | 1.88" |
| Width | 3.25" |
| Depth | 5" |
| Weight | 1.95 lbs. |
FAQs
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What is the primary use of the Radial Engineering ProD2 Stereo Direct Box?
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The Radial Engineering ProD2 is designed for connecting stereo instruments like keyboards to a mixing console, providing a clean, balanced signal with minimal noise.
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Does the Radial ProD2 require external power to operate?
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No, the Radial ProD2 is a passive direct box and does not require any external power source to function.
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Can the Radial ProD2 handle high signal levels?
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Yes, the Radial ProD2 is capable of handling high signal levels, making it suitable for use with active instruments such as keyboards and electronic devices.
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Does the Radial ProD2 offer a ground lift switch?
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Yes, the Radial ProD2 includes a ground lift switch to help eliminate hum and noise caused by ground loops.
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What are the input and output options on the Radial ProD2?
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The Radial ProD2 features 2 x 1/4" inputs and outputs, along with 2 x XLR outputs, allowing flexible connectivity for stereo instruments.
Videos
SpectreSoundStudios
Do you need a Direct Box? - Test Results!
Reviews
PROS
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Resolves frequency noise and grounding issues effectively
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Built like a tank; incredibly durable
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Excellent sound clarity and warmth, especially for keyboards
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Stereo capability enhances mix presence and reduces phase cancellation
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Reliable passive design; no batteries needed
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Maintains clean, hum-free signal even under load
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Quality connectors and components prevent damage from phantom power
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High-quality transformers offer superior audio performance
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Popular among sound engineers for ease of use and reliability
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Versatile for multiple instruments and applications
CONS
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Can color the tone, making some patches darker
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High price point compared to other DI boxes
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Buttons may occasionally stick, requiring maintenance
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Radial Engineering ProD2 Stereo Direct Box.
Features and functionality
User experience
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A user experienced failures in multiple Radial ProDI units within two years in a church setup, despite careful handling and minimal movement.
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Owners report that the Radial ProD2's transformers can help dull metallic highs above 4-5kHz, offering a smoother sound for bass and acoustic guitars.
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Radial ProAV2 is frequently recommended for its versatility as a go-to DI for many event types, including theater shows and client-run events.
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Radial's Stagebug series offers compact, lightweight solutions for mobile setups, though some users find the build quality less robust than full-size models.
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Build quality
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Radial DIs are known for their durability against heavy impact but may sustain damage if dropped from a table, as noted by multiple users.
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Owners have reported that transformer connections in the ProD2 often fail, affecting its reliability, especially if dropped from a height.
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Some users report issues with the Radial BT-Pro's plastic housing, specifically around the Bluetooth sensor, which has cracked and required repair.
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The ProD2 has been tested in harsh conditions, surviving submersion due to its military-grade epoxy, highlighting its durability for rugged use.
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Comparisons
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The Klark Teknik DN100, though discontinued, is noted for its robust silicone sleeve and higher input impedance compared to Radial's J48 and Pro48.
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Fire Eye RedEye DIs are noted for their sound quality on piezo pickups but lack a ground lift, affecting their suitability as a primary unit.
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The Radial Pro D2 is praised as a reliable stage workhorse, while the JDI is noted for its true signal representation, especially with Jensen transformers.
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Other
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Radial gear is favored not just for performance but also because it is manufactured in Canada, appealing to those who prioritize locally made products.
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Software and compatibility
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For digital or virtual events, Radial's USB DIs are highlighted as effective for transitioning audio from computers to consoles.
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Use cases and applications
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The Radial PZ-DI's switchable impedance is praised for making soundchecks easier by flipping the input load for various acoustic instruments.
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For orchestral instruments with passive piezo pickups, a high-impedance DI like Radial’s piezo DI is recommended for optimal sound quality and flexibility.
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The ProD2 is favored for live applications where signal fidelity is crucial, but active DIs like the J48 are preferred for weak passive pickups due to hotter signal output.
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5.0 out of 5
Based on 1 Review and 7 Ratings
5455
The always under appreciated DI
Always have a DI on hand. Standard duties include running any electric keyboards thru to take off a bit of that bite in the upper frequencies, standard bass set ups, etc.
I have both the Jensen Stereo Model and the PRO D2. Radial makes quality gear you can count on and these are no exception.
Artist usage
Add artist
The picture shown at 5:42 in the Arte TRACKS interview video shows the ProD2 box to the right of A.G. Cook's head.
In this Premier Guitar Rig Rundown feature, we see that Gill's guitar rig includes two MacBook Pro laptops, which are connected to the FOH via two ProD2 units.
Ángel Parra is confirmed to use the Radial Engineering ProD2 Stereo Direct Box, as evidenced by a photo showing him testing his pedalboard for a new phase of "La Revuelta" by Los Tres. The proof can be seen in the Instagram reel where the Audio Sprockets ToneDexter pedal is also visible.
This image posted to Underworld's Instagram account shows Karl's Cornell combo amp with a PRO D2 box and a pair of TU-12 tuners perched on top.
According to this article that discusses the kit that Bryan uses, Radial Engineering ProD2 direct box is one of the items he carries during touring.
In this photo, which shows Rinehart's pedalboard from 2011 (more photos from the concert can be found here), one of the items that can be seen is the Radial direct box.
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Radial Engineering ProD2 Stereo Direct Box, it is most commonly used with the following gear.
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