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Radial JDI MK3 Passive Direct Box

If you think all direct boxes are the same, you haven't tried the Radial JDI MK3. 23 People rated this product:

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Manufacturer's Description for Radial JDI MK3 Passive Direct Box

The Radial JDI is considered by many to be the world's finest direct box. It is a passive DI that employs a Jensen isolation transformer for optimum audio performance offering outstanding linearity at all frequencies, combined with extraordinary level handling without introducing distortion. Being completely passive, the plug & play JDI does not require any powering and has the unique advantage of eliminating 60-cycle ground loops. This makes the JDI a definite favorite with informed audio engineers. The JDI is great for guitars, bass, and keyboards and is particularly adept with high-output, broadband instruments such as active instruments and digital keyboards. The JDI may be rack-mounted using the J-Rak and is also available in a stereo (2-channel) version called the JDI Duplex and the 6-channel rack-mountable JD6. zZounds is an authorized dealer of Radial products.

Dynamic range: 135 dB

Signal to noise: 119 dB

Maximum input level: +19 dB

Frequency range: 10 Hz - 40 kHz

Linearity 20 - 20kHz: 0.1 dB

Phase coherence:
4 degrees at 20 Hz
0 degrees at 1 kHz

Distortion at 20 Hz: 0.006%

CMR rejection: 100 dB @ 60 Hz

Input impedance: 10 k ohms

Output impedance: 600 ohms

Construction: Welded steel

Finish: Baked enamel

Input connectors: Two 1/4 in. phone

Output connectors: XLR male

Dimensions and Weight in Packaging: Shipping Weight: 2 lbs; Shipping Dimensions: 7 x 5 x 3 in

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What Our Customers Are Saying About zZounds "zZounds has been my favorite musical equipment retailer for years and I couldn't be more satisfied." - customer on January 16th, 2012

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Customer Reviews

5 out of 5 (23 ratings) Rate and Review This Product

Read all 5 Radial JDI MK3 Passive Direct Box Reviews

"Stop searching... your DI troubles are solved."

Sound: I used this on my 6 string bass... WOW! I was having a bit of a hate on for the bass as I felt it was a bit lack luster going through my other passive DI box. This was different... no lie my B string sounded tighter, and the pups on the bass sounded clearer. I will not let this DI box go - EVER! Feature: There's a number of cool things it can do... but I'm just DI'ing it no need yet for the other bits... Ease of Use: plug-n-play not pray Quality: TANKS should be built this well... Value: I'd pay more but I'm glad I didn't have to. Manufacturer Support: They're Canadian... so polite. The Wow Factor: I want the JDI rack for my synths now Overall: The search is over.

Style of Music: Various

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zZounds has verified that this customer bought this product from us. Written by one of our gear experts! "worth the money, you'll never need to upgrade"

Sound: I wish I knew why some DIs are better than others. It seems pretty straightforward, some loops of wire on a transformer, input and output. But this box sounds head and shoulders above all the other DIs I've used. The smoother, tighter bass was great and the high end sounded more realistic, a flaw I hadn't noticed in my bass tone until now. Feature: There aren't a lot of bells and whistles you can throw on a direct box but the fact that you can take a DI off the back of an amp head before it hits the speaker is pretty cool. Of course it has all the other features, too: phase flip, pad, ground lift. There's also a "merge" function that lets you DI two sources at once with one box, summed to one mono signal. Great for live sound situations. Ease of Use: Again, it's a direct box. Plug it in. Done. Quality: Built like a tank. This should last longer than you. Value: Yeah, it's a little pricey compared to the other guys out there. But it sounds a lot better than the other guys out there, too. Manufacturer Support: no experience. The Wow Factor: yeah, i'm buying two. Overall: You'll never need to replace this with a different passive DI box.

Style of Music: rock, country, jazz, film scores, electronic

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Read all 5 Radial JDI MK3 Passive Direct Box Reviews

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Available on
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learn more

Need it now but short of cash? All we need is the first payment up front and the rest in easy monthly payments!

Fast approval.: We approve everyone, with very few exceptions, as long as we can verify your identity.
No interest. Ever.: It's just as if you paid the whole amount up front!
No paperwork. Nothing to track.: No application to mail or fax, no bills to pay. We automatically charge the payments to your credit card.

We'll wait on your money so you don't have to wait for your gear!

When you checkout, just click the Play as you Pay checkbox to indicate which installment plan you wish to use.

on most orders $49+

Just $2.99 on
smaller orders

Really heavy stuff might cost you a
little more

learn more

Why fight traffic and pushy salesmen when we'll bring your gear straight to your home, free of charge?

zZounds free shipping is really free!: No hidden charges or hassles on returns.
Fast, reliable delivery: We have warehouses on both coasts, so most shipments arrive in 3 days or less.
We don't collect sales tax. Bonus!: Only NJ residents pay tax during checkout.

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