Radial Engineering PZ Pro 2-Channel Acoustic Preamp

2-Channel Acoustic Instrumental Preamp

Take complete control over your tone, EQ settings, and effects with the PZ-Pro, a two channel instrument preamp, DI and switcher. Each channel features a separate equalizer strip complete with a filter section to reduce feedback on stage. The second channel of the PZ-Pro also features a microphone input to allow any dynamic or condenser microphone to be used, including clip-on instrument mics. Three footswitches provide the ability to toggle between each input channel, activate a built-in booster and an effects loop, or mute the signal for silent tuning on stage.

Mission control for your acoustic setup

The PZ-Pro is designed for instrumentalists and performers who take a no-compromise approach when it comes to tone, both on stage and in the recording studio. Dual input channels allow you to switch between or blend together two sources, with full control over the sound of each input. Each channel has its own semi-parametric equalizer section and input level, along with individual filter controls to reduce feedback on stage. The second channel of the PZ-Pro also features a microphone input to allow any dynamic or condenser microphone to be used, including clip-on instrument mics or even vocal microphones. An FX Loop with a wet/dry knob provides the ability to blend in as much or as little pedal effects as desired, with a footswitch to bring them in and out of the signal chain at a moment's notice. Finally, once your tone is completely dialed-in, balanced XLR direct outs feed the PA system or a recording interface, with both Pre-EQ and Post-EQ outputs available.

Adaptable for any application

The PZ-Pro is highly configurable, so you can adapt it to meet the needs of your performance, instead of changing your performance to fit the limitations of your gear. Connect magnetic pickups, instruments with on-board preamps, or piezo transducers, and optimize the sound of each with powerful EQ controls and a variable notch or high-pass filter. Blend an instrument mic with your pickups, switch between two instruments, or connect a vocal microphone and feed it through your guitar pedals. The FX loop can be assigned to channel A, B, or both at once, and you can activate it with a footswitch or assign it to be always on, saving footswitch control for the variable clean boost function. With the PZ-Pro, you get the durability and performance Radial is known for, along with all the features you need to put on an unforgettable show.

Key Features

• Two independent ¼″ instrument inputs (Input 1 & Input 2) allow quick instrument switching or blending of two pickup systems.
• On-board piezo buffers (PZB) for each input switch the input impedance up to ~10 MΩ—ideal for passive piezo transducers and maintaining natural tone.
• Semi-parametric 3-band EQ with shelving bass and treble controls and a mid-band where you can select the centre-frequency and apply boost or cut.
• Notch filter (sweepable from ~56 Hz to ~330 Hz) plus selectable “Q” (normal or deep) for surgical removal of feedback-prone frequencies without trashing the overall tone.
• Low-cut/high-pass filter (with selectable cutoffs) to remove stage rumble, sub resonances or unwanted low-end energy.
• Dual balanced XLR direct-out paths:
• Pre-EQ (dry) XLR — sends a clean, unprocessed signal to front of house or recording.
• Post-EQ / effects XLR — sends your full processed/monitored signal (including EQ, boost, effects loop) to monitors or a second mix.
• ¼″ instrument-amp output — for your on-stage amplifier or pedalboard chain with full effect of the PZ-Pre path (EQ, filters, booster, effects loop).
• Dedicated tuner-output with mute footswitch — providing silent tuning or instrument change-over on stage without disrupting the main signal.
• Built-in effects loop (¼″ send / return) that can be routed via the footswitch (either the loop alone, boost alone, or both together) for flexible solo or texture control.
• Footswitchable toggle between Channel 1 and Channel 2, footswitchable mute and boost – giving hands-free control during performance.
• Rugged, road-worthy construction: 14-gauge steel chassis, compact size (8″ x 4¼″ x 2″ approx.) and designed for stage/live use.

Why It’s Ideal for Professionals & Tone Purists 

• The dual-input design lets you seamlessly switch between two instruments (for example, a 6-string and a 12-string) or blend pickups (e.g., piezo + mic) for rich acoustic textures—very suitable for your boutique guitar business context.
• The high-impedance piezo buffer preserves the natural articulation and detail of acoustic instruments with piezo transducers, giving you premium tone with minimal coloration.
• Stage rationalisation: with separate pre- and post-eq DI outs, you maintain a clean signal to FOH while tailoring a different mix for your monitor or in-ear feed—an advanced workflow rarely found in simple pedals.
• The built-in feedback control (notch + low-cut) is especially valuable on stage with acoustic instruments and high-gain environments—this means more gain before feedback and a tighter, more professional live sound.
• The flexibility combined with rugged build makes it a perfect candidate for boutique stores like yours or high-level rigs that demand both tone and control.