While the industry has leaned heavily into complex, digital, screen-menu-driven modelers, the Radial JDX Direct Drive stands out by doing the exact opposite. It is a completely analog, zero-latency amp simulator and direct box designed to live right at the end of a guitar pedalboard.

Instead of processing a signal through computer code, it uses Radial’s legendary discrete, class-A analog filtering circuitry to replicate the frequency response of a real guitar amplifier and speaker cabinet. It is the ultimate insurance policy against bad venue backlines, a bulletproof fly-rig centerpiece, and a silent stage lifesaver.

Unlike Radial's original JDX 48 (which requires being plugged between an amp head and a speaker cabinet), the Direct Drive is designed to take the signal straight from pedals. You plug the output of your overdrive, delay, or preamp pedal directly into it, and it splits the signal three ways to solve complex routing problems effortlessly:

1. BALANCED OUT (XLR): Sends a fully cab-simulated, low-impedance mic-level signal straight to the front-of-house PA mixer or recording interface.
2. THRU (1/4"): Passes your dry, un-simulated pedalboard signal directly into a physical guitar stage amplifier if you're using a hybrid stage setup.
3. TUNER / OUT (1/4"): Can feed a dedicated tuner or double as an un-simulated line-level monitor send.

The top panel features intuitive slider switches to quickly sculpt your direct tone without ever scrolling through a menu. Radial maps these filters to classic amp archetypes:

Control SectionSetting / VoicingSonic Profile & Target ToneAMPLIFIERJDX 4x12Replicates the signature sound of a classic Marshall 4x12 cabinet mic’d with a Shure SM57. Deep low-end punch and aggressive, cutting upper-mids.AMPLIFIERSTACKMimics a high-gain British tube head stack. Rich harmonic saturation, smoothed-out highs, and an incredibly tight transient response for heavy rock.AMPLIFIERCOMBOEmulates an open-back, vintage twin-style American 2x12 combo. Clean, glassy, open, and dynamic—perfect as a blank canvas for external drive pedals.PRESENCEBRIGHT / NORMALA quick shelving EQ toggle. If your direct signal feels a bit dark in a muddy room, flipping to "Bright" injects instant top-end articulation and bite.

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