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Radial Engineering JPC | Active DI Box for Laptops and Line Sources

$229.99 new
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Product Description
Active DI, Stereo Inputs for Laptops and CD Players, Phantom Powered

The Radial JPC is a stereo direct box that has been specifically designed to connect computer sound cards and other consumer electronic products 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 destination. This proven approach eliminates 60-cycle hum and buzz caused by so-called ground loops when two pieces of electrically powered devices are connected together. Because the active circuit does all of the impedance conversion and balancing, a dedicated 1:1 transformer can be used. This results in a hybrid design that is at once great sounding, compact and more affordable.

As with all great designs, simplicity is a fundamental trait and the Radial JPC certainly fits the bill. A choice of stereo 1/4”, 1/8” and RCA input AND thru-put connectors make interfacing a snap with all types of equipment. A single switch inserts a -10 dB pad, two power LEDs confirm +48V phantom is turned on, and a pair of XLR output connectors round out the feature set.

Of course like all Radial products, the JPC is built to handle any environment. The book-cover wrap-around sleeve design protects switches and connectors from damage while the 14-gauge steel I-beam construction eliminates stress that could torque the PC board and cause solder joint failure. A full-bottom no-slip pad provides electrical insulation and mechanical isolation with plenty of ‘stay-put’ for use on hectic stages. And with its baked enamel finish, the Radial JPC will continue looking great for years!

Radial is known for the highest quality of direct boxes, and the JPC is no different. Get yours today!

Features
Easy-to-use stereo interface for laptop computers
Active signal path with transformer isolation
Eliminates hum and buzz common to computers
Multiple connector types for any audio source
Pad for high-level sources to prevent overload distortion
Specifications
Audio Circuit Type: Unity gain buffers and inverters using low-noise high-end audio-grade operational amplifiers
# of Channels: 2 (stereo)
Frequency Response: 20 Hz to 20 kHz, ±2 dB
Dynamic Range: 111 dB
Total Harmonic Distortion: 0.01% @ -15 dBu output
Intermodulation Distortion: Less that 0.15% at any level below clipping
Phase Deviation: +29° at 20 Hz / -5° at 1 kHz / -80° at 20 kHz
Input Connectors: 1/4", RCA, 3.5mm TRS
Input Impedance: 10 kΩ
Equivalent Input Noise (EIN): -94 dBu
Noise: -97 dB below 0 dB out
Max. Input Level: +17 dBu
Output Connectors: XLR
Output Impedance: 600 Ω
Feature: Input pad, ground lift, phantom power
Construction: 14-gauge steel chassis and outer shell
Power: +48V phantom power (each channel requires +48V)
Conditions: For use in dry locations only, 5-40°C
Dimensions (H x W x D): 2" x 3.3" x 5"
Weight: 1.55 lb (720 g)

Radial J-PC   ( Radial Engineering J PC )

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