Radial JDX-48 Guitar Amp DI w/ Speaker Emulation - The Ultimate Tone Solution
Guitar Amp Direct Box
• Capture your amp's tone perfectly
• Dual powering options for ultimate flexibility
• Works great for both electric guitar and bass
Deliver your amp's tone through the PA
The JDX 48 makes it a breeze to get a consistent and natural amplifier tone through the PA system every night. It takes a direct feed from your amplifier and uses Radial's popular JDX speaker emulation, similar to placing a dynamic microphone in front of a 4x12 half stack cabinet. This gives you a more manageable sound onstage, especially when feedback is an issue or mic'ing your amp isn't an option. For artists with in-ear monitoring systems, the JDX 48 provides consistent tone each night in the monitor mix, reducing setup time and giving a more comfortable audio feed.
Dual powering options
The JDX 48 can be powered by 48V phantom from the mixing console for a cleaner stage setup, eliminating the need to carry a power supply to the gig. And when phantom power isn't available, it comes with a separate DC power supply, giving you a backup powering option so you never have to perform without it.
JDX 48 Applications
- JDX 48 Applications
The Radial JDX is connected between the head and the cabinet, capturing a minute signal off the circuit. The reactive load gets both the sound from the head and the impulse from the cabinet for a more realistic tone. - Using the Radial JDX 48 on bass
The JDX makes bass guitar sound amazing! You get a fat low-mid punch and extra clarity, making the bass stand out. It truly sounds like you're playing through an SVT, but through the PA. - Using the JDX 48 with a mic and the Phazer
For even more fun, combine the direct sound of the JDX with a microphone. Use the Radial Phazer to time-align the two signals and prepare for the biggest, fattest, most amazing tones ever. Be careful, it's addictive!
Features:
- Captures amplifier sound through a direct box
- Delivers consistent tone every performance
- Works well on electric guitar and bass
- Can be powered from 48V phantom or DC supply
- Ground Lift
Innovative circuit lifts ground without cutting 48V phantom power. - Bass Ext
Extends low frequency response to simulate 15' driver - No Slip Pad
Provides electrical & mechanical isolation and stops the JDX from sliding around. - 300W Amp
Increases power handling for 300 Watt amps. - From Amp
1/4' jack connects from amp head to JDX. - To Speaker
1/4' jack connects JDX to Speaker - Bookend Design
Protects connectors and switches for added durability. - XLR Output
Balanced 600 Ohm mic level output for mixer or mic preamp. - 180° Polarity Reverse
Toggles XLR pins-2 & 3 to align sound sources. - Cable Clamp
Keeps power supply cable in place and prevents accidental disconnect. - 15 VDC PSU
Input for included power supply. Use when 48V phantom isn't available. - Warranty: Radial 3-year, transferable
Specifications:
- Audio circuit type: Discrete Class-A - Transformer Isolated
- Frequency response: Shaped for guitar use
- Dynamic range: 114dB
- Total harmonic distortion: <0.015% (+10dBu input @ 1KHz
- Intermodulation Distortion: 0.03% (+10dBu input @ 1KHz)
- Input Impedance: 15k
- Output Impedance: 2k (XLR out)
- Noise: -100dBu below 0dBu
- Maximum Input: 120W @ 8
- Maximum Output: +14dBu (clip level)
- Features:
- 180° polarity reverse, Ground lift
- Input Connectors: One 1/4' input
- Output Connectors: One XLR output, one 1/4' output
- Extras: Bass extension lowers frequency response for bass guitar, 300W amp increases power handling from 100W to 300W, Active speaker emulation band-pass filter
- General
- Construction: 14-gauge steel chassis and outer shell
- Size (L x W x D): 6.25' x 5' x 2' (159 x 127 x 51mm)
- Weight: 2.80lbs (1.28 kg)
- Power: 48V phantom or +15VDC/400mA adapter Included
- Conditions: For use in dry locations only between 5°C and 40°C

The Radial JDX-48 Guitar Amp DI with Speaker Emulation is a must-have for musicians. It's great for live gigs, studio recordings, and rehearsal sessions. Whether you're a professional guitarist or bassist, this product is for you. It has a 14-gauge steel chassis and outer shell, measuring 6.25' x 5' x 2' (159 x 127 x 51mm) and weighing 2.80lbs (1.28 kg). It can be powered by 48V phantom or +15VDC/400mA adapter and is suitable for use in dry locations only between 5°C and 40°C.