Radial Engineering J48 Active Direct Box

Dynamic range: 130dB

Signal to noise: 119dB @ 100Hz

Maximum input: 10V

Frequency range: 10Hz - 40kHz

Linearity 20-20kHz: 0.1dB

Phase coherence: 10 degrees @ 20Hz; 0 degrees @ 1kHz

Distortion @ 20Hz: <0.5%

Input impedance: 220kohm

Output impedance: 600 ohm

Active 48-Volt phantom powered direct box
  Minimal power draw with high rail voltage
  Will not choke when driven hard
  Low inter-modulation distortion

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.

Features include a -15dB pad, 180 polarity reverse, a unique merge function to mix two signals to mono, an 80Hz high-pass rumble filter, and ground lift. Like all Radial products, the J48 is built to handle the abuse on the road and features a unique welded I-beam construction for years of trouble free performance.