Radial Engineering
Radial Engineering JDI MK3 Passive Direct Box
100
EJ Score
Legendary $259.99
The JDI is the definitive passive direct box, featuring a premium Jensen transformer for exceptional transparency and signal integrity. It is the go-to choice for high-output instruments like active basses and keyboards in both live and studio settings.
100
EJ Score
Legendary Pros & Cons
Pros
- +Industry-standard Jensen transformer provides linear response from 10Hz to 40kHz
- +Passive design requires no power and handles extreme transients without distortion
- +Indestructible 'bookend' design protects switches and connectors from damage
- +Completely transparent signal path with virtually zero phase shift
Cons
- −More expensive than many active DI boxes
- −Passive design means it may not be ideal for low-output passive instruments
The Verdict
There’s a reason you see the JDI on almost every professional stage. It earns its Legendary 100/100 EJ Score by being the most reliable, transparent, and roadworthy DI box ever made. It’s a ‘buy it once and own it for life’ tool. If you are a professional musician or sound engineer, this is the benchmark against which all other DI boxes are measured.
