The Radial JX42 Guitar Amplifier Switcher is a professional, compact switcher used to matrix four guitars and two amps in studio or live applications.
The JX42 is a smaller, more affordable version of the JX44 Air Control guitar and amp switcher. It can handle up to four guitars and switch between two amps using the optional JR2 remote control. The chassis is 14 a gauge steel in Radials trademark bookend design. This creates a sturdy protective zone around the switches and knobs to safeguard against the harsh environments of professional touring. The unique I-beam construction adds tremendous rigidity to protect the internal circuit board from torque which could lead to premature cold solder joints.
The front panel houses four input channels that all feature dedicated radio-style on-off switches that immediately turn the previous channel off when engaged. These are complimented with easy-to-see LEDs for visual clarity in darkened environments.
The switching is done using opto-resistive couplers the flux the signal up and down, eliminating any popping that would otherwise occur. This is particularly important when mating the JX42 with high-gain amps and concert-level PA systems.
Internally, the Radial’s award winning 100% discrete class-A buffering circuit is employed to ensure absolute signal quality is maintained. Each input channel also sports a dual function “set & forget” potentiometer that can be assigned as either a level control to match various active or passive guitar or bass signals, or can be set to “Drag” for precise load correction when using magnetic pickups. The “Drag” control replicates the tone and feel as if connected directly to an amp. The potentiometers are recessed in order to leave the front panel clear of obstructions so that they are not accidently changed during performance.
Connection to the JX42 is done using standard ¼" guitar jacks via the rear panel. Each input is accompanied by a dedicated thru output that allows the guitarist to mate a particular guitar with a specific amp or SGI extender to feed a distant pedalboard. When used with bass, the thru can be used to feed a Radial direct box to send a clean signal to the FOH position. There are two main stage amp outputs, of which the B output is transformer isolated to eliminate hum and buzz caused by ground loops. Selecting the amps may be done using a front panel AB selector switch or by connecting the optional JR2 remote footswitch via a TRS jack. Once connected, the JR2 derives its power from the JX42 which illuminates the AB select and mute LEDs. A dedicated tuner out mates with the mute footswitch for quiet on-stage tuning.
The JX42 is powered via a 15VDC supply for extra headroom which can be locked to secure the cable.
The main features of the Radial JX42 Guitar Amplifier Switcher include:
- 14 Gauge Steel Chassis
- Class – A circuitry
- Optional rack ears for dual mounting
- 100% discrete buffering circuit
- Dedicated Thru outputs
- Isolated transformers
- Optional JR2 remote footswitch.
- Made In Canada