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Radial J48 MK2 Active 48-Volt Phantom Power Direct Box

Eerily efficient, this DI box from Radial features 48-volt phantom power, a switching power supply and spacious headroom for low-distortion signal transfer. 5 People rated this product:

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Manufacturer's Description for Radial J48 MK2 Active 48-Volt Phantom Power Direct Box

The Radial J48 is a great sounding active direct box that has been optimized to produce maximum headroom while working within the limited current available from standard 48V phantom power. By employing a unique switching power supply, 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 degree polarity reverse, a unique merge function to mix two signals to mono, an 80Hz high-pass rumble filter, and ground lift. Like all Radial products, the J48 is built to handle the abuse on the road and features a unique welded I-beam construction for years of trouble free performance.

The single most important development goal of the Radial J48 was increasing the headroom without compromising sound quality. To this end, every possible effort was made to deploy the limited energy resources of phantom power to the audio signal path.

To begin, phantom power is converted using a super-efficient digital switch-mode power supply that steps up the internal rail voltage to an impressive 10 volts. This allows one to hit the J48 with as much as 9-Volts without choking! To further increase available horsepower, all non-essential devices such a power-hungry LEDs are turned off when the J48 is in use. A typical LED requires almost as much current as does the complete audio circuit!

Features
Welded I-beam construction makes it impossible to torque the PC board. This virtually eliminates cold solder joints - the No.1 cause of system failure in the field.

An innovative zZounds is an authorized dealer of Radial products.

Dynamic range: 130dB

Signal to noise: 119dB@100Hz

Maximum input: 10V

Frequency range: 10Hz to 40kHz

Linearity 20Hz to 20kHz: 0.1dB

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

Distortion at 20Hz: < 0.5%

Input impedance: 220k 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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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.

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We'll beat any price: Really. It's not a problem for us. In fact, we'll thank you for the chance to live up to our lowest price guarantee!
It's fast and easy: Just tell us where you saw the lower price - another website, an email offer, your local store - and we'll send you our lowest price offer in a matter of hours.
Simply click the Seen it for less? link: Next to the item you want, or give us a call at 800-zZounds (800-996-8637).

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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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