Radial J+4 2-channel Signal Level Driver

Signal Driver with Level Matching from -10dB to +4dB
5/5 1 Write review Item ID: JPlus4Stereo
Radial J+4 2-channel Signal Level Driver image 1
Radial J+4 2-channel Signal Level Driver image 1
Sweetwater Savings: $30.01 MSRP: $260.00
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Radial J+4 2-channel Signal Level Driver
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Your Swiss Army Knife for Level Matching

If you interface pro audio with low-level devices - instruments, MP3 players, computers, etc. - you need the Radial J+4. The J+4 takes incoming signals as low as 10dB and boosts them up to +4 for use in professional audio environments such as recording and broadcast studios or live touring. The J+4's 100% discrete circuitry ensures optimal signal integrity, while its active signal buffering and transformer isolation virtually eliminate noise. The simple control set includes a stereo gain control, a highpass filter, and a ground lift. For flexibility, J+4 is fitted with dual 1/4" and RCA jacks, and an 1/8" stereo TRS input.

Built Radial tough

Like every Radial product, the J+4 is designed tour-tough. At Sweetwater, we expect nothing less from Radial. Its roadworthy 14-gauge steel I-beam inner frame protects the vulnerable PC board, while the unique book-end outside shell puts the controls, switches, and connectors in a protective zone. The bottom is covered in a non-slip pad for superior electrical and mechanical isolation. With its high headroom, ultra-low-noise performance, rock-solid dependability, and amazing versatility, you'll find the Radial J+4 to be indispensable.

Radial J+4 Balanced -10dB to +4dB Signal Driver Features:
  • Increases gain of low-output instruments, computers, and music players
  • Onboard stereo preamp boosts low-level signals to +4dB line level
  • Transformer isolation eliminates noise due to ground loops
  • Generous connectivity:
    • 2 x 1/4" jacks
    • 2 RCA jacks
    • 1/8" stereo TRS
  • S/N ratio: greater than 95dB
Solve your level-matching problems with the Radial J+4!

Tech Specs

Type Stereo Preamplifier
Channels 2
Outputs 2 x XLR
Analog Inputs 2 x 1/4", 2 x RCA, 1 x 1/8"
Height 2"
Depth 5"
Width 3.3"
Weight 1.55 lbs.
Manufacturer Part Number R800 8015

Customer Reviews

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DAW Guitar/Bass Preamp perfection !

This thing is a great way to plug directly into your DAW to use amp sims, etc! Matched the impeadance perfectly for low volume vintage instruments.
See also: Direct Input Boxes, Radial, Radial Direct Boxes