The Radial J48 Stereo Phantom Powered Active DI Box offers natural tone and pristine signal integrity for every instrument, whether you’re on stage or in the studio. With zero distortion and outstanding headroom, you can plug in and play with confidence. The J48 Stereo is equipped with essential tools to enhance your sound, including a ground lift switch to eliminate unwanted noise, a high-pass filter to tame low frequencies, and a -15dB pad to adjust input sensitivity. Its robust and compact construction allows for easy integration into any setup, providing protection against knocks and drops.
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The J48 Stereo is designed to bring out the best in your instruments, offering more headroom and dynamic range. It is perfect for guitars, basses, and high output line level instruments. Unlike typical active DI boxes, the J48 Stereo can handle maximum volume without overloading, thanks to its unique switching power supply that allows for a higher rail voltage of up to 9 volts. This results in improved signal handling and virtually noise-free operation, providing natural tone and character.
Key features of the J48 Stereo include pristine signal integrity, exceptional dynamic range and headroom, built-in polarity reverse switch for phase correction, high-pass filter for bottom-end cleanup, and ground lift switch to eliminate humming and buzzes. It does not require batteries as it is powered by 48V phantom power. The LED indicator allows for easy checking of phantom power presence, and the -15dB pad enables instant input sensitivity reduction for high output instruments. The J48 Stereo can be connected to a wide range of equipment via 1/4″ jack inputs and thrus, and it provides a flawless connection through its balanced 600-ohm mic level output. Its compact, robust, and lightweight steel construction ensures durability.
Specifications of the J48 Stereo include a proprietary analog circuit with low-noise op-amp, frequency response of 20Hz to 20KHz, dynamic range of 109dB, noise floor of -99dB below 0dBu, equivalent input noise of -103dBu, maximum input of +10dBu, phase deviation of +10° at 20Hz, 0° at 1kHz, -1° at 20kHz, THD of 0.002 @ -5dBu, inter-modulation distortion of 0.003 @ -3dBu, input impedance of 220kΩ – 1/4″ input, output impedance of 600Ω – XLR output, input pad of -15dB, polarity of 180° signal polarity reverse (right channel only), low-cut filter of -3 dB @ 80Hz, XLR configuration of AES standard (pin-2 hot), power of 48V phantom power – internal switching supply, construction of 14-gauge steel-chassis and outer shell, powder coat finish, size of 3.3″ x 5″ x 2″, and weight of 720g.
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