The Radial JDI is a passive direct box designed to handle extreme signal levels without distortion of any kind. Unlike an active DI that is limited by the buffering amplifier’s rail voltage, the JDI employs a Jensen audio transformer as the engine. Jensen transformers are legendary in their ability to gracefully handle transients while delivering a smooth, warm sounding Bessel curve, reminiscent of the finest vintage gear. Ruler flat from 10Hz to 40kHz and with virtually zero phase deviation, the JDI delivers the natural, pure sound of the instrument without artifact.
The 100% passive circuitry inside the JDI is incredibly efficient. The transformer performs both high-to-low impedance conversion and signal balancing at the same time with minimal loading and does so without any power whatsoever. The transformer also introduces a magnetic bridge that passes signal while rejecting stray DC voltage. This makes the JDI particularly adept at eliminating hum and buzz caused by ground loops.
Features include input and throughput ¼” connectors, -15dB input pad, ground lift, and 180º degree polarity reverse to help phase align the instrument with the PA. A secondary circuit is added for direct interfacing with high output devices such as guitar or bass amp loudspeakers plus a unique merge function allows stereo sources such as keyboards to be summed mono, saving valuable input channels.
Built tough to handle the abuse of live touring, the JDI features a 14-gauge steel I-beam inner frame and a unique book-end outer shell. The innovative design eliminates stress on the PCB, reducing opportunity for solder joints to go ‘cold’ while the outer shell creates a protective zone around the switches and connectors. The steel casing resists noise-causing electromagnetic pollution and the transformer’s sensitive inner workings are further protected from magnetic fields with a MuMETAL® can. This ensures the signal transfer is quiet and free from hum.
These combined features have made the Radial JDI the most popular passive direct box in professional touring and an excellent choice for instrument interface in the studio!
The Radial JDI… the world's finest passive direct box.
- Jensen Transformer equipped passive DI
- Eliminates hum and buzz from ground loops
- Virtually zero pahse and harmonic distortion
- Exceptional signal handling and noise rejection
We understand that when you make an order, you want your gear as quickly as possible and we'll do our best to make that happen! Most of the items we sell will ship quickly and be at your door fast. In most cases, orders ship within 1-3 business days. Shipping and delivery dates are not guaranteed unless otherwise specified.
Most orders $100 and over qualify for FREE shipping within the Continental United States. Some exclusions may apply.
See our full Shipping Policy for further details.
Buy Online, Pick Up In Store
Most orders are usually ready within 24 hours for same-day pickup or get free shipping to your local store. Just choose the "Ship to store" option at checkout.
See our full Shipping Policy for further details.
Local Same Day* Delivery to your doorstep
Get your musical dreams filled faster!
Making your online shopping a little easier. We offer an easy “Order Online, Deliver to your Doorstep” service.
This is currently available for these towns within California: San Rafael, San Anselmo, Fairfax, Larkspur, Greenbrae, Corte Madera, Novato, Sausalito, Belvedere/Tiburon, Ross, Kentfield, and Mill Valley. Shipping rates are shown at checkout. Contact us if you have any questions.
Deliveries are contracted to a 3rd party delivery service, locally owned and operated Marin Courier Express.
*Order online before 3pm, items will be delivered same day generally within 4 hours. 2 hour options are available for additional fee. Orders after 3pm will be delivered next day.
See our full Local Same Day* Delivery terms for all of the details.
Local Pickup Only
Some products are available for local pickup only. If you’d like this item shipped, please call or text us at 1 (888) 900-1959 to discuss shipping options.
Any new item (other than as noted in our full Return Policy) purchased from Bananas at Large may be returned within 14 days of the invoice date, for a full refund, exchange or credit. All Pre-Owned Products may be returned in 48 hours. All Clearance, “additional mark down”, additionally discounted, “blow out”, “door buster” or otherwise identified as on sale are all sales final.
For online orders, the above return policy begins on the day the items were delivered. We must receive an active tracking number within the specified time.
See our full Return Policy for all of the pertinent details.
Play now & Pay later!
Make music more affordable with these easy payment plans. It only takes a few minutes to apply or just choose the payment option at checkout. Bananas at Large offers these online and in-store financing options: Affirm, QuadPay, GetFinancing, Synchrony and more! Click here for details.
Bananas has teamed up with Clyde to offer product protection. Clyde partners with A-rated insurance carriers to offer warranty coverage on your musical instrument or audio equipment.
How does it work?
- Warranty coverage will replace or repair your product if your equipment or instruments breaks.
- To purchase, select the term-length and review the summary of coverage.
- After purchase, you’ll receive your contract via email.
- To file a claim, visit hiclyde.com and submit the contract ID found in your email.
- Power Surges
- Wear and Tear