Radial J48
Active DI
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The Radial J48 is a great sounding active direct box that has been optimized to produce maximum headroom while working within the limited current available from standard 48V phantom power. By employing a unique switching power supply, the J48 is capable of peak transients to 9 volts without choking. The result is lower harmonic distortion, half the inter-modulation distortion and significantly improved dynamics over other DIs.
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The Radial J48 direct box is the world’s fi nest phantom-powered active DI. It has been optimized to handle extreme transients using only the 5 milliamps of available current from typical 48-Volt phantompower.
The J48 features a unique digital switch-mode power supply that steps up the internal rail voltage to an amazing 9-Volts.
Most battery-powered guitars and basses are active and will produce as much as 7-Volts when played at maximum volume. Since typical direct boxes are only able to handle about 3 volts, they choke. The
trouble is caused when the input signal is greater than the internal rail voltage. This creates all types of distortion: bass sounds thin and lacks punch, guitars sound scratchy and tend to have sporadic peaks,
and they lose their natural body resonance.
Because the J48 has more ‘horse-power” (current to work with), it is able to handle these transients
without choking. This extra headroom signifi cantly reduces harmonic, phase and inter-modulation
distortion. And when you fi x all of the problems, a funny thing occurs... you get great sound!
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