Radial EngineeringTonebone PZ-Pre Acoustic Direct Box Preamp


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Radial Engineering Tonebone PZ-Pre

The Tonebone PZ-Pre Acoustic DI Box Preamp, from Radial Engineering, features piezo acoustic input signal boosters that allow for the melding of active preamps and add-on instrument pickups, resulting in a more organic rendering.

The signal path starts with two instrument inputs, each of which can be toggled using the corresponding footswitch. Additionally, each input contains its own individual level controls. For those players who insist of using two pickups in one guitar, the Tonebone implements a Mix function that converts the channels from “either-or” to both.

In terms of tone shaping, the Tonebone boasts an inherently musical and relatively straightforward design with blistering bass and high controls, as well as a semi-parametric mid. This section is further enhanced by a notch filter with variable frequency sweep controls and a selection of normal or deep notch filtering. There’s also an internal polarity reverse and high-pass filter; with the former eliminating feedback and the latter for getting rid of any unnecessary resonance.

Perfect for both the studio and stage, the Tonebone boasts a combination power booster and effects loop bus, letting users add effects or boost the input signal with the mere click of a footswitch. For even more convenience, there’s an additional tuner output with a mute foot switch for effortless tuning.

Tonebone PZ-Pre Features

  • Piezo acoustic input signal boosters
  • Designed for studio and live performance
  • Unique Mix function
  • 1 -gauge construction
  • External 15VDC power supply
  • Input impedance regular: 6.8 kOhm
  • Input impedance piezo: 10 MOhm
  • PZB boost level: 10dB
  • Low cut roll-off pos-1: 75Hz
  • Low cut roll-off pos-2: 220Hz
  • Notch frequency range: 56Hz to 330Hz
  • Notch Q setting-1: 8dB
  • Notch Q setting-2: 15dB
  • Low frequency type and spec: Shelving type +/- 12dB @ 75Hz corner freq
  • Mid frequency range, type and spec: Parametric +/- 12dB 82Hz to 5.6Khz
  • High frequency type and spec: Shelving type +/- 12dB @ 7.5Khz corner freq
  • Boost level: 12dB
  • Effects send & receive : -10dB, Send 1 kOhm, Return 15 kOhm
  • Polarity Switch: 180 degrees (absolute phase reversal)
  • Input-1: 1/4" unbalanced
  • Input-2: 1/4" unbalanced
  • Insert send & receive: Send 1 kOhm, Return 15 kOhm
  • Output instrument: Hi-Z, coaxial, 1 kOhm
  • Output Tuner: Hi-Z, coaxial 6.8 kOhm
  • Pre-EQ: XLR male balanced mic level 600 ohms
  • Post-EQ: XLR male balanced mic level 600 ohms
  • Dimensions: 8" x 4-1/4" x 1-3/8" (203x108x35mm)

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp Reviews