Radial PZ-Pro 2-Channel Acoustic Preamp Pedal

The Sanctuary Perspective

The Radial PZ-Pro is Radial’s ultimate flagship acoustic workstation, designed to deliver uncompromised tone control and routing flexibility for professional touring acoustic artists and multi-instrumentalists. Expanding on the legacy of the classic PZ-Pre, the PZ-Pro features two fully independent channels with dedicated EQ sections, flexible piezo buffers, and an integrated XLR microphone preamp with selectable 48V phantom power. Whether you are blending a piezo pickup with an internal condenser microphone, toggling between two different acoustic instruments on stage, or running a vocal/instrument combination through a single floor unit, the PZ-Pro serves as the definitive central command for high-end acoustic setups.

Product Intelligence & Signal Integrity Profile

• Best For: Professional Touring Acoustic Guitarists, Multi-Instrumentalists, Singer-Songwriters, Double Bassists, and Dual-Source Acoustic Rigs (Pickup + Mic).
• Sound Character: Studio-grade transparency with massive dynamic headroom, whisper-quiet operation, ultra-musical 3-band semi-parametric EQs, and smooth harmonic detail.
• Compared To: Upgrades the PZ-Pre by providing complete independent EQ controls for both channels, an integrated XLR mic preamp with +48V phantom power, a dedicated wet/dry FX loop blend control, and expanded XLR direct routing.
• Sanctuary Expert Note: "The PZ-Pro is the gold standard for players running high-end dual-source acoustic systems—like blending an internal mic with an active or passive bridge pickup. Having dedicated semi-parametric midrange controls on both channels lets you sculpt away harsh boxiness or piezo quack while preserving the natural acoustic air of your instrument."

Key Features & Stage Engineering Highlights

• Two Independent Channels with Separate EQs: Shape Channel 1 and Channel 2 individually with dedicated 3-band Equalizers featuring sweepable semi-parametric midrange controls.
• XLR Microphone Input with 48V Phantom Power: Channel 2 includes a studio-grade XLR input capable of powering clip-on acoustic condenser mics or vocal microphones with clean phantom power.
• Selectable PZ-B Piezo Buffers: Engage ultra-high 10M-Ohm impedance buffers on either channel to eliminate piezo 'quack' and harsh loading artifacts on passive transducers.
• Surgical Notch & High-Pass Filtering: Global variable notch filter sweeps from 56Hz to 330Hz to eliminate low-end acoustic feedback, while a 3-position filter roll-offs stage rumble.
• Assignable FX Loop with Wet/Dry Blend: Integrate external chorus, delay, or reverb pedals seamlessly into your acoustic chain with precise wet/dry mix control.
• Dual Balanced XLR Direct Outputs: Outfitted with independent Pre-EQ and Post-EQ/FX XLR outputs with ground lifts for dead-quiet FOH and monitor feeds.

Technical Specifications

• Audio Circuit Type: Proprietary Class-A Discrete FET with Low-Noise Operational Amplifiers
• Number of Channels: 2 (Channel Toggle or Channel Blend Modes)
• Frequency Response: 20Hz – 20kHz (± 0.5dB)
• Dynamic Range: 105dB
• Total Harmonic Distortion (THD): 0.005% @ 1kHz
• Input Impedance (Standard 1/4"): 6.8kΩ
• Input Impedance (PZ-B Active): 10MΩ Ultra-High Piezo Impedance
• Input Impedance (XLR Mic): 2.1kΩ Balanced
• Output Impedance: 1kΩ Balanced XLR / 1kΩ Unbalanced 1/4"
• Equalization (Both Channels): High (+/-10dB @ 10kHz), Low (+/-12dB @ 75Hz), Mid Parametric Sweep (350Hz – 4.7kHz)
• Filters: Variable Notch Filter (56Hz – 330Hz), High-Pass Filter (Flat, 80Hz, 200Hz)
• Switches: Mute, Channel Select (A/B or Blend), Boost/FX Loop, Phase Invert, Ground Lift, 48V Phantom Power
• Connections: 2 x 1/4" Instrument Inputs, 1 x XLR Mic Input, 1 x 1/4" FX Loop Send/Return, 1 x 1/4" Amp Out, 1 x 1/4" Tuner Out, 2 x XLR Balanced Outs (Pre & Post EQ)
• Power Requirement: 15VDC 400mA Supply Included
• Chassis: 14-Gauge Heavy Duty Steel