Price match offer by Studiospares

Price Match

Excellent support and technical sales team

Excellent Support

We are rated 9.5 on Trustpilot

Rated 4.8 / 5

Free delivery over £149

Free Delivery Over £99 (exclusions apply)

Finance options

Finance Options

  1. Home
  2. Microphones
  3. DI Boxes
  4. Radial JPC Stereo Balancing Active DI Box
Alternative Image
Radial JPC Stereo Balancing Active DI Box
Alternative Image 1
Alternative Image 2
Alternative Image 3

Radial JPC Stereo Balancing Active DI Box

Product Code: 403530

Active Direct Box for Laptop Computers.

£191.00 (INC VAT)
Only 1 left. Don't miss out! Order by 3pm for express delivery options More Info
Add to Basket Add to Wishlist Print Check out Finance Options here

Delivery Icon

Price Match

We'll match or beat any price

Price Icon

Free Delivery

On Orders over £99 (INC VAT)

  • Description
  • Specifications
  • Reviews
  • Media
  • Downloads

Radial JPC Sound Card DI Box

The JPC is an analog stereo interface designed to help solve the hum and buzz problems commonly associated with connecting a computer or consumer playback device to an audio system.


The JPC is a stereo direct box that is easy to use with practically any consumer electronic device. It utilizes active buffers and transformer isolation to create a hybrid circuit that blocks ground loops and reduces system noise, along with AC blocking capacitors to prevent any audio system noise from bleeding back into the computer. The choice of ¼", RCA and 3.5mm input connectors make it easy to interface with all types of unbalanced audio sources such as computers, smartphones, and tablets, and the outputs are XLR balanced mic level to feed snake systems and PAs. Powering the JPC is accomplished via 48V phantom from a mixing console, allowing the JPC to be used in concert environments without requiring an external power supply.



  • Easy to use stereo interface for laptop computers
  • Active signal path with transformer isolation
  • Eliminates hum and buzz common to PCs
  • Multiple connector types for any audio source


JPC Applications


Using the JPC with a computer

  • Computers are often the cause of noise in the PA system. The JPC's combination of transformer isolation with an active drive circuit helps reduce noise by eliminating stray currents.


Using the JPC with a DJ setup

  • The JPC is well suited to handle the type of audio generated by CDs and digital audio files. By isolating the the source with the PA system you also eliminate noisy ground loops.


Using the JPC with an Phone

  • The JPC's 3.5mm (1/8") TRS jack makes it easy to interface portable playback devices. This makes it easy to bring unbalanced audio tracks into the PA system via the balanced mic input of a console.
  • * Audio circuit type: Unity Gain buffers and inverters using low noise high end audio grade operational amplifiers
  • * Number of channels: 2
  • * Frequency response: 20Hz ~ 20kHz +/- 2dB
  • * Dynamic range: 111dB
  • * Total harmonic distortion: 0.01% @ -15dBu Output
  • * Intermodulation Distortion: Less than 0.15% at any level below clipping
  • * Phase Deviation: +29º at 20Hz | -5º at 1kHz | -80º at 20kHz
  • * Input Impedance: 10kΩ
  • * Output Impedance: 600Ω
  • * Equivalent Input Noise: -94dBu
  • * Noise: -97dB below 0dB Out
  • * Maximum Input: +17dBu
  • * Construction: 14 gauge steel chassis and outer shell
  • * Size (L x W x D): 84 x 127 x 48mm
  • * Weight: 720 g
  • * Power: 48V Phantom Power (each channel requirers 48V phantom)
  • * Conditions: For use in dry locations only between 5°C and 40°C
Customer Reviews

There are no product reviews for this product, why not submit one?