Best Radial Engineering in 2026

Last Updated: Sep 27, 2023

At a Glance: Our Top Picks

Radial Pro DI Passive Direct Box
#TOP1
Radial Pro Di Passive Direct Box
9.9
PM SCORE
Radial ProD2 Passive 2 Channel Direct Box
#TOP2
Radial Prod2 Passive 2 Channel Direct Box
9.8
PM SCORE
Radial Pro48 Active 48-Volt Compact Direct Box
#TOP3
Radial Pro48 Active 48-Volt Compact Direct Box
9.8
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the best Radial Engineering of 2026

Radial Pro Di Passive Direct Box

RADIAL ENGINEERING
R8001100
6.40 X 4.30 X 3.00 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Chicago Music Exchange 9.90

Features

Passive direct box

Proprietary transformer for impedance conversion and isolation

Linear from 20Hz-18kHz

Low distortion and zero phase distortion

XLR input

Radial Prod2 Passive 2 Channel Direct Box

RADIAL ENGINEERING
R8001102
6.40 X 4.30 X 3.10 Inches
1.90 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLGear 9.59

Features

Passive stereo direct box

Dual proprietary transformer for impedance conversion and isolation

Linear from 20Hz-18kHz

Low distortion and zero phase distortion

XLR input

Radial Pro48 Active 48-Volt Compact Direct Box

RADIAL ENGINEERING
R8001105
6.40 X 4.30 X 3.00 Inches
1.50 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLGear 9.59

Features

High-resolution active direct box

Increased dynamic range and headroom

48V phantom-powered with digital switching

Compact, rugged book-end design

Ideal for active guitars and basses

Radial Engineering Prormp Studio Re-Amper Passive Re-Amping Direct Box

RADIAL ENGINEERING
R800-1125
6.40 X 4.40 X 3.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Liquid Audio Inc 9.90

Features

The process is often used on guitars, bass, keyboards, percussion, and even voice to create new textures

Radial Engineering Usb-Pro Stereo Usb Laptop Di

RADIAL ENGINEERING
R800 1050
6.30 X 4.15 X 2.85 Inches
1.75 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Shoreline Music 8.37

Features

High performance 24bit/96k stereo direct box Automatically installs without the need of a driver Built-in headphone amplifier for monitoring Balanced Lo-Z outputs with switchable isolation

Automatically installs without the need of a driver

Built-in headphone amplifier for monitoring

Balanced Lo-Z outputs with switchable isolation

1kHz conversion rates, the USB-Pro elevates the performance with true 24 bit, 96kHz stereo converters to deliver more headroom and greater detail

Radial Engineering R8001010Jdi Single-Channel Passive Direct Box With Jensen Transformer

RADIAL ENGINEERING
R8001010
4.25 X 6.50 X 3.25 Inches
1.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Crazy Dave's Music 9.00

Features

Equipped with Jensen transformer

Eliminates buzz and hum from ground loops

Virtually zero phase and harmonic distortion

Radial J48 Mk2 48V Phantom Power Active Direct Box

RADIAL ENGINEERING
R8003001
6.50 X 4.10 X 3.10 Inches
1.85 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
thePruneDanish 9.93

Features

Active 48-Volt phantom powered direct box -15dB pad 180 degree polarity reverse Merge function to mix 2 signals to mono 80Hz high-pass rumble filter Ground lift Welded I-beam construction Minimal power draw with high rail voltage Will not choke when driven hard Low intermodulation distortion

The J48 is capable of peak transients to 9 volts without choking

The result is lower harmonic distortion, half the inter-modulation distortion and significantly improved dynamics over other DIs

Features include a -15dB pad, 180&deg polarity reverse, a unique merge function to mix two signals to mono, an 80Hz high-pass rumble filter, and ground lift

It's built to handle the abuse on the road and features a unique welded I-beam construction

Radial Engineering Hotshot Dm1 Microphone Signal Muting Footswitch

RADIAL ENGINEERING
R800 1500
2.00 X 5.00 X 5.00 Inches
1.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Sole Source AV Supply 9.54

Features

Mic mute and signal redirect

Passive floor-box

XLR mic input

Momentary footswitch

Main and monitor XLR outputs

#TOP9

Radial Stagebug Sb-1 Acoustic Active Direct Box

RADIAL ENGINEERING
R8000110_137152
8.25 X 1.85 X 1.35 Inches
0.01 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Shoreline Music 8.17

Features

With 800k-ohm Input Impedance

48V Phantom Powered

Active Direct Box

Polarity Switch

15dB Pad

Radial Bigshot I/O True Bypass Selector Switch

RADIAL ENGINEERING
BIGSHOT I/O
6.40 X 4.60 X 3.00 Inches
1.40 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Shoreline Music 8.27

Features

Toggle two instruments with single foot stomp

Adjustable volume control to match levels

Separate tuner output and mute switch

Compact and rugged for pedalboards

Load compensation for long cables

Radial Engineering Sgi Tx/Rx Studio Guitar Interface

RADIAL ENGINEERING
R800 1600 00
10.80 X 4.80 X 2.70 Inches
2.90 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Gear Hero HQ 8.96

Features

Transmit and receive module

Sends a signal through 350' of balanced cable

100% discreet class-A

Transformer isolation

Drag Control load correction circuit

Radial Exo-Pod Passive Line-Level Splitter

RADIAL ENGINEERING
SRA EXO-POD
13.35 X 5.65 X 3.45 Inches
3.90 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Liquid Audio Inc 9.90

Features

14-out Passive Line-level Splitter with Trim Pots XLR Through f Daisy Chaining

1-in

Radial Catapult Mini Tx Cat 5 Audio Snake

RADIAL ENGINEERING
TXR8008028
6.30 X 4.30 X 3.00 Inches
1.06 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLGear 9.59

Features

4-channel Cat 5 Analog Audio Snake Transmitter

Radial Engineering Pz-Di Acoustic/Orchestral Instrument Active Direct Box

RADIAL ENGINEERING
R800 3005 00
6.25 X 4.25 X 2.80 Inches
1.68 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
GearTree 9.84

Features

"Optimized for orchestral instruments on a live stage Adjustable load for piezo and magnetic pickups Variable low-cut filter to control bass resonance 48V phantom powered, does not require batteries"

Adjustable load for piezo and magnetic pickups

Variable low-cut filter to control bass resonance

"48V phantom powered, does not require batteries"

The 220k-ohm setting warms up the tone of a magnetic pickup to give you the feel and tone as if connected to a tube amplifier

Radial Engineering Trim-Two Passive Di For Av With Level Control

RADIAL ENGINEERING
R800 1117 00
1.00 X 1.00 X 1.00 Inches
1.72 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLGear 9.60

Features

Stereo direct box for line level sources

Ultra linear response from 30Hz to 20kHz

Easy access front panel volume control

Choice of RCA, 1/4" and 3.5mm connectors

This makes the Trim-Two a great choice for interfacing laptops and tablets with PA systems for AV presentations or live events

#TOP16

Radial Engineering Jpc Stereo Pc Di Box

RADIAL ENGINEERING
R800 1026
6.30 X 4.20 X 3.00 Inches
1.75 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Shoreline Music 8.27

Features

The Radial JPC is a stereo direct box that has been specifically designed for use with computer sound cards and other consumer electronic products to allow these to be connected to a professional sound system. It is unique in that it combines the advantages of transformer-isolated inputs with an active drive circuit, giving you the 'best of both worlds' in a compact and extremely flexible package. Transformer coupled inputs have the unique advantage of isolating the 'source' from the '

The JPC features two active 48V phantom powered channels in a compact, rugged enclosure

It combines an active drive circuit, for long cable runs, with transformer isolated inputs to eliminate hum and buzz caused by ground loops

Multiple input and thru connectors for great versatility include 1/8" stereo, 1/4" stereo and RCA

In depth: The Radial JPC is a stereo direct box that has been specifically designed for use with computer sound cards and other consumer electronic products to allow these to be connected to a professional sound system

Radial Engineering Js3 Passive Microphone Splitter Direct Box

RADIAL ENGINEERING
R800 1023
6.30 X 4.20 X 2.90 Inches
1.67 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Zorro Sounds 9.83

Features

Passive splitter direct box

Electrically isolated XLR I/O

Direct throughput with ground lift

2 transformer-isolated outputs

30dB pad

Radial Engineering Lx-3 Passive 3 Channel Line Splitter

RADIAL ENGINEERING
R800 1034 00
6.38 X 4.13 X 2.88 Inches
1.76 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Instrumentpro 9.88

Features

Send one audio signal to three destinations simultaneously Jensen transformer equipped for exceptional audio quality Eliminates hum and buzz caused by ground loops 14-gauge steel construction and military-grade circuit board for incredible durability

The Radial LX-3 is a balanced line-level splitter that sends one audio signal to as many as three destinations at once

Completely passive with no need for power, the LX-3 sends your audio where it needs to go

The LX-3 features a premium Jensen JT-123-FLPCH transformer, which boasts a broad frequency frequency response, high signal level handling and low distortion, all of which combine to provide the highest possible signal quality

It features two isolated outputs to eliminate hum and buzz from ground loops, along with a third direct output

#TOP19

Radial Engineering J33 Riaa Turntable Preamp Direct Box

RADIAL ENGINEERING
R800 1300
10.85 X 4.85 X 2.50 Inches
2.50 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
GearNuts 9.86

Features

RIAA phono-turntable preamp and direct box

RCA inputs

XLR, RCA, 3.5mm, and TRS line-level outs

Steel housing

Switch and jack protection

#TOP20

Radial Engineering Pro Iso Stereo Line Isolator +4Db To -10Db With Radial Transformer

RADIAL ENGINEERING
SRA PRO-ISO
6.30 X 4.20 X 3.00 Inches
1.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLGear 9.60

Features

"Stereo pro to consumer audio interface RCA, 3.5mm and 1/4"" outputs, XLR inputs Variable output control to set optimum levels Transformer isolated to eliminate hum & buzz Applications: Record direct from mixers and mic-preamps Interface +4dB pro-gear with unbalanced inputs Recording interface for laptops and MP3 players Swiss army problem solver and adaptor Cool stuff: Passive design doesn't need power 'Plug & play' easy-to-use anywhere"

"RCA, 3.5mm and 1/4"" outputs, XLR inputs"

Variable output control to set optimum levels

Transformer isolated to eliminate hum & buzz

This makes it easy to interface professional audio gear with devices such as computer sound cards, iPods, or -10dB recorders

#TOP21

Radial Twin Iso Passive Line-Level Isolator (Standard)

RADIAL ENGINEERING
R800 1024 00
6.50 X 4.25 X 3.00 Inches
2.25 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Liquid Audio Inc 9.90

Features

Uses world's finest Jensen Audio Transformers

2 +4dB line-level floating channels

Insulated XLR I/O

Nickel-laminated Jensen JT-11P1 isolation transformers

10Hz-40kHz response

Radial Engineering Js2 Passive Microphone Splitter Direct Box

RADIAL ENGINEERING
R800 1022
6.40 X 4.20 X 2.90 Inches
1.67 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Zorro Sounds 9.83

Features

Passive splitter direct boxElectrically isolated XLR I/OSecond auxiliary direct throughput with ground liftTransformer-isolated output30dB pad48V DC phantom powerGround liftCommon mode noise rejection up to -100dB at 60Hz14-gauge, I-Beam steel frameBaked enamel finishInnovative bookend cover

Radial Tonebone Pz-Pre Acoustic Preamp

RADIAL ENGINEERING
PZ-PRE
13.20 X 5.50 X 3.40 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLGear 9.60

Features

Piezo acoustic input signal boosters

Designed for studio and live performance

Unique Mix function

1 -gauge construction

3-year transferable warranty

Radial Engineering Prod8 Eight Channel Rackmount Di

RADIAL ENGINEERING
R800 1120
22.20 X 10.25 X 4.75 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Instrumentpro 9.88

Features

"Eight Radial DIs in a high-density rack format Redundant input connectors for main and backup inputs Custom Radial transformers for linear performance Designed to handle highly dynamic sources Rack ears reverse so either panel can face front DA-888/ADAT 8-ch performance DI Live touring, recording, rentals Permanent installs, theaters, halls"

Redundant input connectors for main and backup inputs

Custom Radial transformers for linear performance

Designed to handle highly dynamic sources

Rack ears reverse so either panel can face front

Radial Extc 500-Series Guitar Effects Interface

RADIAL ENGINEERING
R700 0132 00
8.90 X 6.80 X 2.00 Inches
1.35 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Vintage King Audio 9.84

Features

Balanced interface for guitar effects pedals

Separate send & receive controls optimize signal path

Transformer isolated send eliminates ground loops

Creative tool helps your mix stand out from the rest

The EXTC unbalances the signal and converts it to high impedance where guitar pedals can be inserted at will

Radial Engineering Jdx-48 Reactor Guitar Amp Direct Box

RADIAL ENGINEERING
R800 1402 00
11.00 X 5.00 X 2.75 Inches
2.45 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Liquid Audio Inc 9.90

Features

Authentic replication of your sound without the inconsistencies of miking Effective 412 cabinet emulation Consistent output show after show I-beam super-rugged construction

Effective 412 cabinet emulation

Consistent output show after show

I-beam super-rugged construction

That approach entirely misses the characteristics that power tubes and solid state power stages lend to a guitar sound

Radial Engineering J+4 Stereo Line Driver -10Db To +4Db Interface

RADIAL ENGINEERING
R800 8015
10.80 X 4.90 X 2.80 Inches
2.14 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLGear 9.60

Features

Stereo -10dB to +4dB interface

Transformer isolated to eliminate noise

Onboard hi-pass/low-cut filter

Greater than 100dB of dynamic range

Plug and play design makes it easy-to-use

#TOP28

Radial Engineering Relay Xo Balanced Ab Signal Switcher

RADIAL ENGINEERING
R 800 8030
1.00 X 1.00 X 1.00 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Zorro Sounds 9.83

Features

with 2 Mic/Line Inputs

Active Audio Switcher

2 Mic/Line Outputs

Ground Lift

Link Pt

#TOP29

Radial Engineering R8001028 X-Amp Active Re-Amplifier

RADIAL ENGINEERING
X-AMP
10.70 X 4.90 X 2.60 Inches
2.12 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Liquid Audio Inc 9.90

Features

Active Re-amplifier with two outputs

100% discrete Class-A signal path

Isolated transformer to eliminate noise

Radial Engineering J48 Stereo Active Direct Box

RADIAL ENGINEERING
R800 3002
1.00 X 1.00 X 1.00 Inches
1.00 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Zorro Sounds 9.83

Features

Ultra low distortion of all types Exceptional headroom & dynamic range Retains instrument's natural sound Powered by 48V phantom

Exceptional headroom & dynamic range

Retains instrument's natural sound

Powered by 48V phantom

The design begins with a rugged 14 gauge steel construction and a bookend design that protects sensitive switches and connectors from damage

Radial Engineering on Amazon: A Comprehensive Review

As an online shopper, it's crucial to make informed decisions. This review will focus on Radial Engineering, a brand that has made its presence felt on Amazon. With its wide range of products in Recording Signal Direct Boxes, Radial Engineering has become a go-to for many shoppers.

Product Range

Radial Engineering offers a vast product count of 33 items. This diverse selection caters to a wide array of needs and preferences, making it a versatile brand for consumers.

Quality and Pricing

Quality is a defining factor for any brand. Based on customer feedback and ratings, Radial Engineering's products have an average rating of 6.0 out of 10, indicating a high level of customer satisfaction.

When it comes to pricing, Radial Engineering has products ranging from a minimum price of $89.99 to a maximum of $999.99, with an average price of $285.84. This pricing structure caters to a wide range of budgets, making Radial Engineering an accessible choice for many shoppers.

Customer Service

Customer service is the backbone of any successful online brand. Radial Engineering is sold by avlgear shoreline music alto music gearnuts theprunedanish zorro sounds liquid audio inc instrumentpro geartree sole source av supply vintage king audio crazy dave's music chicago music exchange and gear hero hq, who are known for their commitment to customer satisfaction. They have been responsive and helpful, according to customer reviews and feedback.

Shopping Experience

The shopping experience on Amazon with Radial Engineering has been largely positive. The brand's wide range of products, combined with the ease of navigation on Amazon, has made shopping a breeze for many customers.

Delivery and Packaging

Delivery and packaging are yet another aspect where Radial Engineering shines. Items are delivered in a timely manner and the packaging ensures the products reach the customers in pristine condition.

Conclusion

In conclusion, Radial Engineering offers a wide range of quality products at varying price points, making it a brand worth considering for your next Amazon purchase. Their commitment to customer service, combined with a seamless shopping experience, makes Radial Engineering stand out in the crowded Amazon marketplace.

Overall Rating

Based on the analysis of product range, quality, pricing, customer service, shopping experience, and delivery, we rate Radial Engineering [6.0 out of 10 stars].