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. As you will note with the specifications below, 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.Higher Rail Voltage, Higher HeadroomMost battery-powered guitars and basses will produce as much as 7 Volts when played at maximum volume, which can easily overload typical active direct boxes which are only able to handle about 3 Volts. The J48 uses a unique switching power supply that raises the internal rail voltage so it can handle up to an incredible 9 Volts, resulting in improved signal handling and greater headroom. This additional headroom significantly reduces distortion of all types, allowing the natural tone and character of the instrument to shine through.Features:Exceptional headroom & dynamic rangeRetains the natural sound of the instrumentMerge switch sums stereo instruments to monoPowered by 48V phantom, no batteries requiredSpecificationsAudio circuit type:Proprietary analog circuit with low-noise op-ampFrequency response:20Hz ~ 20kHzDynamic range:109dBTotal harmonic distortion:0.002% @ -5dBuIntermodulation Distortion:0.003% @ -3dBuPhase Deviation: 10º at 20Hz | 0º at 1kHz | -1º at 20kHzInput Impedance:220kΩ – ¼” inputOutput Impedance:200Ω – XLR outputEquivalent Input Noise:-103dBuNoise:-99dB below 0dBuMaximum Input: 10dBuFeaturesInput pad, Mono Sum, 180° polarity reverse, Ground lift, HPFInput Connectors:1/4″Output Connectors:Balanced XLR, 1/4″ ThruGeneralConstruction:14 gauge steel chassis and outer shellSize (L x W x D):3.3″ x 5.0″ x 2″ (84 x 127 x 48mm)Weight:1.55 lb (720 g)Power:48V phantom – proprietary digital switchingConditions:For use in dry locations only between 5°C and 40°CWarranty:Radial 3-year, transferable
