Direct Boxes


Radial J48 Phantom Powered Active Direct Box

The Radial J48 has gained a tremendous following through the professional audio community. With significantly more headroom, lower distortion and unmatched durability, it is no wonder that the J48 has become the most specified direct box on stages around the world. The J48 is exceptionally linear when tested both under laboratory conditions and when placed under the extra stress of 100 meters (300 feet) of cable. In the lab, the high frequency response actually exceeds 40kHz! This makes the J48 a perfect candidate for the most demanding studio recording while being the obvious choice for the artist on stage. 


Radial JDI Passive Direct Box

The Radial JDI is a phase coherent, passive direct box employing a nickel laminated Jensen™ audio transformer with virtually zero phase distortion, huge dynamics handling and ruler flat response from 10Hz to 40kHz. The Radial JDI™ is quite simply the world's finest passive direct box. With its heavy-duty steel shell and internal I-beam construction, the JDI is designed to work dependably for years in even the harshest of touring environments. Ideal for keyboards, bass and acoustic instruments of all kinds, the JDI Duplex™ and JD6™ are also available for stereo and multi-channel applications.


Radial ProDI Passive Direct Box

The Radial ProDI is a professional grade passive direct box that employs the same high quality audio transformer used in the ProD2, ProAV1, ProAV2 and ProD8. Designed to be 'plug and play' easy to use, the ProDI supports a standard feature set that is ideally suited for live touring, yet equally effective for the studio. It is able to withstand exceptional signal levels while delivering a clean, natural tone with minimal distortion of all types. 


Radial ProD2 Stereo Direct Box

The ProD2 is a high-quality ultra-compact stereo passive direct box that features custom-made Radial transformers. Essentially two ProDIs in one compact enclosure the ProD2 is a great choice for stereo keyboards, DJ equipment and consumer hi-fi systems. Its high-performance transformer has an exceptionally linear frequency response from 20Hz to 18kHz and is able to handle high signal levels without saturation making it ideal for electronic instruments. The ProD2 is housed in an extremely rugged two piece 14 gauge steel enclosure with a book-end designed outer shell that prevents damage to the switches, features a -15dB PAD for high output sources and ground lift switch to troubleshoot noise from ground loops.


Radial ProD8 Eight Channel Rackmount DI

The Radial ProD8 is an 8 channel 19" rack-mountable direct box designed for professional concert touring. The feature set has been optimized for keyboards but as with any direct box, it is certainly suitable for use with instruments or playback systems. The passive signal path incorporates a custom wound Radial transformer and RF filtering that is able to withstand excessive signal levels without distortion while delivering a linear response across the audio spectrum. 


Radial ProAV1 Passive 1 Channel Multimedia DI

Radial ProAv1 - Passive 1 Channel Multimedia DI with RCA, 3.5mm, XLR, 1/4" connectors.

The Radial ProAV1 and ProAV2 are passive direct boxes designed to handle the extreme dynamics and frequency range that is now common with digital sources. Linear across the audio range, these exhibit low distortion at all frequencies, amazing signal handling and very little phase shift. The result is a clean, natural sounding rendition that is both noise-free and dependable.


Radial Pro AV2 Passive Stereo Multimedia DI

Radial ProAv2 - Passive Stereo Multimedia DI with RCA, 3.5mm, XLR, 1/4" connectors.

The Radial ProAV1 and ProAV2 are passive direct boxes designed to handle the extreme dynamics and frequency range that is now common with digital sources. Linear across the audio range, these exhibit low distortion at all frequencies, amazing signal handling and very little phase shift. The result is a clean, natural sounding rendition that is both noise-free and dependable.

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