Radial J48 Active 48V Phantom Power Active Direct Box

If you play bass, do yourself a favor and buy one of these; if you play keys, buy two! The thing is, there are DI boxes, and then there's the Radial J48 - all alone, and a class by itself. Seriously, DI boxes have a job to do - good ones get the job done, great ones get the job well, but the Radial J48 will actually make your tone sound better than ever before.

This active DI box runs on regular old 48V phantom power, which it uses to keep up with even the most massive transient spikes and never choke out. That's right - hit J48 with the funkiest slap and pop action you can bust our or with the gnarliest lead in your rig, and you'll never starve the J48. Even 12-string acoustics can overwhelm this DI!

The Radial J48 Active Direct Box is a professional-grade device designed to provide high-quality audio signal conversion for instruments and microphones. Its robust build and advanced features make it an ideal solution for both live performances and studio recordings. The J48 is engineered to deliver exceptional performance, ensuring that the integrity of your sound is preserved while eliminating common issues associated with direct input signals.

The J48 is specifically designed for use with high-impedance instruments, such as electric guitars, basses, and keyboards, as well as low-output microphones. By converting the unbalanced instrument signal into a balanced, low-impedance output, the J48 enables longer cable runs without degradation in sound quality. This makes it an essential tool for musicians and sound engineers who need to ensure pristine audio fidelity during performances and recordings.

The J48 utilizes an active circuit powered by +48V phantom power, allowing it to provide a stronger, more reliable signal than passive direct boxes. This is particularly beneficial for high-impedance sources that require more amplification to maintain audio clarity.

The built-in 80Hz high pass filter is designed to eliminate low-frequency rumble and handling noise. This feature helps to clean up the signal, ensuring that only the desired frequencies are transmitted. The high pass filter effectively reduces unwanted noise from instruments, making it especially useful for live sound applications.

The J48 features a ground lift switch that helps eliminate hum and buzz caused by ground loops. This is crucial for maintaining a clean signal in complex setups where multiple devices are connected, as it minimizes interference and noise.

Built within a 14-gauge steel chassis, the J48 is designed to withstand the rigors of live performance and studio use. Its durable construction ensures longevity and reliability, making it a go-to choice for touring musicians and audio professionals alike.

Features

• Active 48-Volt phantom powered direct box -15dB pad 180 degree polarity reverse Merge function to mix 2 signals to mono 80Hz high-pass rumble filter Ground lift Welded I-beam construction Minimal power draw with high rail voltage Will not choke when driven hard Low intermodulation distortion
• 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
• It's built to handle the abuse on the road and features a unique welded I-beam construction​​

Specifications

• Input Type: 1/4" TRS or XLR (balanced)
  
• Output Type: XLR (balanced)
  
• Phantom Power: Requires +48V phantom power
  
• Frequency Response: 20 Hz to 20 kHz
  
• Input Impedance: 1 MΩ
  
• Output Impedance: 200 Ω
  
• Maximum Input Level: +21 dBu
  
• High Pass Filter: 80 Hz with a -12 dB/octave slope
  
• Ground Lift Switch: Eliminates ground loops for cleaner sound
  
• Construction: 14-gauge steel chassis for durability
  
• Dimensions: 5.4" x 4.2" x 1.75"
  
• Weight: 1.5 lbs (680 g)