---
product_id: 3630374
title: "Radial Pro DI Passive Direct Box"
brand: "radial engineering"
price: "€ 168.51"
currency: EUR
in_stock: true
reviews_count: 13
category: "Radial Engineering"
url: https://www.desertcart.ie/products/3630374-radial-pro-di-passive-direct-box
store_origin: IE
region: Ireland
---

# Passive mono DI for versatile instruments Custom transformer eliminates noise Rugged I-beam stainless steel build Radial Pro DI Passive Direct Box

**Brand:** radial engineering
**Price:** € 168.51
**Availability:** ✅ In Stock

## Summary

> 🎤 Elevate your sound with the Radial ProDI — where pro-grade clarity meets rock-solid reliability!

## Quick Answers

- **What is this?** Radial Pro DI Passive Direct Box by radial engineering
- **How much does it cost?** € 168.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/3630374-radial-pro-di-passive-direct-box)

## Best For

- radial engineering enthusiasts

## Why This Product

- Trusted radial engineering brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built Like a Tank:** Rugged stainless steel I-beam chassis ensures rock-solid durability on any stage or studio.
- • **Plug & Play Simplicity:** No complicated setup—just connect your instrument and enjoy instant ground loop elimination.
- • **Versatile Compatibility:** Perfect for acoustic guitars, basses, electric pianos, and synthesizers—your all-in-one DI solution.
- • **Trusted by Pros Worldwide:** Industry-leading reliability with thousands of 5-star reviews backing your sound’s integrity.
- • **Noise-Free Signal, Every Time:** Custom isolation transformer virtually erases hum and buzz for pristine audio clarity.

## Overview

The Radial ProDI Passive Direct Box is a high-performance, passive mono DI featuring a custom transformer that eliminates noise and ground loops. Built with rugged stainless steel I-beam construction, it delivers reliable, full-range audio for acoustic and electric instruments alike. Praised by professionals for its durability and ease of use, the ProDI is a trusted staple in studios and live sound setups worldwide.

## Description

The Radial ProDI is a high-quality, passive mono direct box that's perfect for use with acoustic guitars, bass guitars, electric pianos, and synthesizers. The ProDI's custom transformer helps to deliver the highest performance possible, virtually eliminating issues with noise. And, as with all Radial DI boxes, the ProDI is incredibly reliable and easy to use — just plug in your mono instrument and instantly eliminate ground loops, while enjoying a rich, full sound. If you need the same excellent quality in a stereo version, Radial also offers the ProD2 stereo version. Raidal ProDI Passive Mono Direct Box at a Glance: Full-range passive direct box Custom isolation transformer eliminates noise Really easy to use Built like a tank Passive vs. Active DI The Radial ProDI and ProD2 (stereo version) are full-range passive direct boxes. Active direct boxes employ electronic circuits to change the impedance from hi-Z to lo-Z and balance the

Review: Quality Sound/Great price - Used for worship team at church. The best sound ever at a reasonable price.
Review: THE best direct box for the money - As the leader of the sound team in my congregation, I found myself regularly fetching replacement direct boxes for the Berhringer and other brand boxes on stage, due to noise or him, insufficient gain or just a dead box. What I noticed over time is that I never had to replace any of the Radial boxes, and in fact the musicians would sometimes ask me specifically for one. So I started stocking up on them and eventually replaced all of the other boxes with Radials. Now I simply don't worry about the boxes at all--they just work and they work well. These boxes are compact and simple, they sound great with no audible noise, and they're solid as a rock. The Pro D2 stereo boxes are just as reliable, and I've purchased a few of those to cover our keyboardists and drum sets with success. We have a couple powered Pro48 boxes that work well, but at some point I hope to have passive direct boxes exclusively, and leave the phantom power for our condenser microphones. These passive boxes are perhaps the most reliable component in all our sound equipment and I highly recommend to all musicians and venues, big or small.

## Features

- Passive Mono Direct Box with Custom Transfmer Rugged I-beam Construction

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000A8J3N2 |
| Audio Driver Type | Custom Driver |
| Best Sellers Rank | #1,985 in Musical Instruments ( See Top 100 in Musical Instruments ) #4 in Recording Signal Direct Boxes |
| Color | Green |
| Color Name | Green |
| Compatible Devices | Desktop, Laptop, MP3 Player, Projector, Smartphone, Tablet, Television |
| Control Method | Touch |
| Customer Package Type | likely FFP |
| Customer Reviews | 4.8 4.8 out of 5 stars (574) |
| Date First Available | October 2, 2001 |
| Global Trade Identification Number | 00676101035847 |
| Indoor/Outdoor Usage | Indoor |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | FALSE |
| Item Weight | 1.19 pounds |
| Item model number | R8001100 |
| Manufacturer | Radial Engineering |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Name | Radial Engineering |
| Number Of Circuits | 1 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 6.4 x 4.3 x 3 inches |
| Series Number | 800 |
| Set Name | Single |
| Shape | Rectangular Prism |
| Speaker Amplification Type | Passive |
| Speaker Size | 1 Inches |
| Speaker Type | Multimedia |
| Special Feature | Durable |
| Style | Boom microphone stand with a telescoping boom arm |
| Subwoofer Connectivity Technology | Wired |
| UPC | 700613726143 642892781775 676101035847 |
| Unit Count | 1.0 Count |
| Voltage | 240 Volts |
| Warranty Type | Limited |
| Water Resistance Level | Water Resistant |
| Wireless Communication Technology | No wireless communication technology |
| Woofer Diameter | 3 Inches |

## Product Details

- **Audio Output Mode:** Mono
- **Brand:** Radial Engineering
- **Connectivity Technology:** XLR
- **Frequency Response:** 18000 Hz
- **Speaker Maximum Output Power:** 600 Watts

## Images

![Radial Pro DI Passive Direct Box - Image 1](https://m.media-amazon.com/images/I/71zYMngCwpL.jpg)

## Questions & Answers

**Q: I have a radial pro48 active di. my interface gets too much signal out of it. will prodi send less? my pickups r active**
A: A common rule of thumb is to use an Active DI with a Passive Bass and a Passive DI with an Active Bass.  That allows the passive DI to handle the active bass hotter signal and the active DI to bump up the level from a passive bass.

**Q: Could this di be used to plug my electric drum set into my system?**
A: If your electric drums have a 1/4" output and your "system" has XLR input (just like my drums and mixer do) then the answer is YES.

**Q: Is this box good for electric guitar like fender stratocaster**
A: very good di, but it is a passive box. your guitar needs to send a line level signal into this di. I've connected this di from the output of a guitar amp or effects foot rack.

**Q: is this the one i need for active guitar pickups with a battery? emgs**
A: It should work with both passive and active pickup systems that use batteries.  I use it with both Fishman and L.R. Baggs systems.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality Sound/Great price
*by E***C on December 18, 2025*

Used for worship team at church. The best sound ever at a reasonable price.

### ⭐⭐⭐⭐⭐ THE best direct box for the money
*by J***N on June 29, 2016*

As the leader of the sound team in my congregation, I found myself regularly fetching replacement direct boxes for the Berhringer and other brand boxes on stage, due to noise or him, insufficient gain or just a dead box. What I noticed over time is that I never had to replace any of the Radial boxes, and in fact the musicians would sometimes ask me specifically for one. So I started stocking up on them and eventually replaced all of the other boxes with Radials. Now I simply don't worry about the boxes at all--they just work and they work well. These boxes are compact and simple, they sound great with no audible noise, and they're solid as a rock. The Pro D2 stereo boxes are just as reliable, and I've purchased a few of those to cover our keyboardists and drum sets with success. We have a couple powered Pro48 boxes that work well, but at some point I hope to have passive direct boxes exclusively, and leave the phantom power for our condenser microphones. These passive boxes are perhaps the most reliable component in all our sound equipment and I highly recommend to all musicians and venues, big or small.

### ⭐⭐⭐⭐⭐ Industry Standard
*by T***S on March 24, 2022*

As a professional musician who's day job is an audio engineer, I use these constantly. I would not buy a different brand, they're worth the money. Silent, reliable, and bulletproof makes this the industry standard. I use this one for my own music, to run my keyboard to house backlines/PA systems. It's always going to ensure a good clean signal with no hum.

## Frequently Bought Together

- Radial Pro DI Passive Direct Box
- Radial ProD2 Passive 2 Channel Direct Box
- Radial Pro48 Active 48-Volt Compact Direct Box

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-18*