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Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp   

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The Tonebone PZ-Pre Acoustic DI Box Preamp is equipped with piezo acoustic input signal boosters to allow both add-on instrument pickups and built-in...Read More

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OVERVIEW

The Tonebone PZ-Pre Acoustic DI Box Preamp is equipped with piezo acoustic input signal boosters to allow both add-on instrument pickups and built-in, integral active preamps to be combined for a more natural rendering. It is compact yet full featured, designed for both studio and live performance.

The Tonebone PZ-Pre instrument preamp begins with two inputs for two instruments, which can be toggled using the toggle footswitch. If you want to use two pickups on a single guitar, a unique Mix function is provided that converts the two channels from "either-or" to both. There are separate level controls for each input.

The tone shaping on the PZ-Pre preamplifier is simple yet extremely musical. It features powerful bass and high controls with a semi-parametric mid. This is supported with a feedback eliminating notch filter with variable frequency sweep control and choice of normal and extra deep notch filtering. To help eliminate troublesome resonance, a dual slope low cut (high pass filter) is also provided. An internal polarity reverse can also be engaged to help eliminate run-away feedback.

To augment on-stage performance, the PZ-Pre Direct Box Preamp is equipped with a combination power booster and effects loop bus. This allows you to introduce an effect such as a chorus, or boost the signal for soloing with a simple foot stomp. A separate tuner out has also been provided along with a mute footswitch for on-the-fly tuning.

To facilitate all kinds of monitoring, the Radial PZ-Pre offers the most comprehensive output array ever: A standard instrument amp output sends the instrument signal to your personal amplifier. A pre-EQ balanced lo-Z balanced output is used to route the flat, pre-equalized signal the signal to the front of house mix position, while a second XLR out is post-EQ for onstage monitoring and in-ear systems so that the musician can get the sound he wants. XLR outputs are equipped with polarity reverse and ground lift.

Like all Radial products, the PZ-Pre features heavy-duty 14-gauge construction and is supported with a 3-year transferable warranty. Comes equipped with an external 15VDC power supply.

Lets you combine add-on pickups and built-in active preamps!

FEATURES
  • Piezo acoustic input signal boosters
  • Designed for studio and live performance
  • Unique Mix function
  • 1 -gauge construction

Radial DIs are for those who are militant about their tone. See why. Order with the protection of our 45-day lowest price and total satisfaction guarantees.

SPECIFICATIONS

Tonebone PZ-Pre Acoustic Direct Box Preamp

  • 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)
Reviews
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Review Snapshot

by PowerReviews
Radial EngineeringTonebone PZ-Pre Acoustic Direct Box Preamp
 
4.9

(based on 15 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Excellent sound (9)
  • Easy to use (8)
  • Good power output (7)
  • Portable (6)
  • Warm / comfy (5)

Cons

No Cons

Best Uses

  • Performances (9)
  • Home studio (5)
  • Outdoor events / games (3)
  • Professional recording (3)
    • Reviewer Profile:
    • Professional musician (6), Experienced (3)

Reviewed by 15 customers

Displaying reviews 1-10

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5.0

Best piece an acoustic player can own

By 

from Cleveland OH

About Me Professional Musician

Verified Buyer

Pros

  • Easy To Use
  • Excellent Sound
  • Good Warmth
  • Portable
  • Powerful

Cons

    Best Uses

    • Performances

    Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

    I perform solo and depend on a power sound from my guitar that people can feel. The tonebone delivers a clean solid bass, allows me to EQ pretty precisely giving me great clarity and it allows me to split a signal for recording and monitor moxing. Great for running multiple guitars through.

    Comment on this reviewHelp Icon

     
    5.0

    best i;ve ever used.

    By 

    from new york

    About Me Professional Musician

    Verified Buyer

    Pros

    • Easy To Use
    • Excellent Sound
    • Powerful

    Cons

      Best Uses

      • Events
      • Home Studio
      • Performances
      • Professional Recording

      Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

      this is a must have piece of equipment for the gigging musician who plays multiple instruments. the naturaal acoustic sound is amazing and switching on the fly has never been easier. construction is bulllit proof.

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      5.0

      Absolutely Phenomenal!

      By 

      from Bay Village, Ohio

      About Me Professional Musician

      Ask me a question

      Pros

      • Easy To Use
      • Excellent Sound
      • Good Warmth
      • Portable
      • Powerful

      Cons

        Best Uses

        • Home Studio
        • Performances

        Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

        Takes a bit of finagling to get it just right, but paired with a Realist Lifeline on my upright bass and I have great volume and sound with no feedback!

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        (0 of 1 customers found this review helpful)

         
        5.0

        PERFECT FOR ME

        By 

        from Wisconsin

        About Me Experienced

        Ask me a question

        Verified Buyer

        Pros

        • Excellent Sound
        • Powerful

        Cons

          Best Uses

          • Home Studio
          • Performances

          Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

          Finally found the Pre/DI I've been looking for. My onboard Preamp died, and never did sound good. Always had a metallic tone to it. Plugged the hole and ran the body piezos and soundhole pick up out the back, both passive. I plug them into the Radial and mix them. Great sound and control.
          I may replace the GTR's preamp to have EQ on both imputs or just add EQ before the PZ-pre.

          On my other GTR, the pre still works, so with a quick change on the PZ-Pre to accept the active signal of the under saddle piezo and imput 2 takes the sound hole pick up and away we go.
          This also solves the problem of only being able to use the equalizer on 1 of the imputs. I use the GTR's onboard EQ for 1 imput and the Radial's EQ for the other imput. Works fine.

          THANKS RADIAL for a GR8 product. Will get others you offer. FX go into the loop easily. A line up to my PA and one to my amp and it's show time.

          Tuner jack to the Peterson strobe comes in real handy also.

          Seems to be built like a tank. Hope to have it for many years.

          Comment on this reviewHelp Icon

          (1 of 1 customers found this review helpful)

           
          5.0

          Simply The Best

          Profile Image

          By 

          from Toronto, Ontario

          About Me Professional Musician

          Verified Reviewer

          Pros

          • Easy To Use
          • Excellent Sound
          • Good Warmth
          • Portable
          • Powerful

          Cons

            Best Uses

            • Home Studio
            • Performances
            • Professional Recording

            Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

            I've been a gear head and a tube snob all my life. I have so much equipment I can start my own music store. I'm in the process of selling every single bit of it. The only thing I need is my guitars, my Yamaha THR-10, My Bose L2 PA and my Tonebone PZ-Pre. I can pack everything in the trunk of a car and fill a large hall with enough sound to please several hundred people. Get the Tonebone ... you won't be disappointed.

            Comment on this reviewHelp Icon

            (3 of 4 customers found this review helpful)

             
            5.0

            love it

            By 

            from Gainesville FLA!

            About Me Professional Musician

            Verified Buyer

            Pros

            • Easy To Use
            • Excellent Sound
            • Good Warmth
            • Portable
            • Powerful

            Cons

              Best Uses

              • Performances

              Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

              I run a square neck dobro with a Fishman spider bridge pickup and an acoustic with an L. R. Baggs M1 through this thing. I bought the Fishman Jerry Douglas imaging pedal (for a ridiculous price mind you) for the dobro and hated it. There was very little control. The Tonebone is the complete opposite. The thing is awesome. I dont need an A/B switch anymore, the boost gives the extra punch when soloing, I have complete control of my EQ and the effect loop works perfect. Not to mention the added bonus of the mute button. Gigged with it the same day it arrived left for the weekend and played 4 shows in 3 days and havent looked back. LOVE this thing. Boom.

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              (1 of 1 customers found this review helpful)

               
              5.0

              Really versatile

              By 

              from Richlands VA

              About Me Experienced

              Ask me a question

              Pros

              • Easy To Use
              • Excellent Sound

              Cons

                Best Uses

                • Performances

                Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

                I play acoustic guitar, mandolin and upright bass on stage and was looking for a professional-quality pre that I could easily plug them all into. Although there are only two inputs, most of the time that's enough. What really amazed me, though, is how little tweaking I have to do when switching between instruments. When I'm going from acoustic guitar to mandolin, all I really have to do is cut out most of the "Low." Otherwise, the tone is excellent for both instruments.

                I did notice, however, that making sure you've matched the Tonebone to the correct pickup type (magnetic or piezo), makes a HUGE difference. If they aren't matched, the sound is thin and noisy.

                Still, I mostly use the Tonebone through a Roland AC60 (except with the bass) and could not be more pleased. The "Boost" switch is very handy for solos. My only wish is that it also had compression, reverb, and chorus thrown in. If it did, I'd never need another acoustic box.

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                (5 of 5 customers found this review helpful)

                 
                5.0

                Flexible and Mighty

                Profile Image

                By 

                from Fort Smith, AR

                About Me Experienced

                Ask me a question

                Verified Buyer

                Pros

                • Easy To Use
                • Excellent Sound
                • Portable

                Cons

                  Best Uses

                  • Events
                  • Home Studio
                  • Performances
                  • Professional Recording

                  Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

                  I have a bunch of acoustic instruments that I want to play through an amp. I started with a classical guitar. I added a D-tar Soundspot which I played with externallly and eventually wired in permanently. The ToneBone is great because it has two input channels both of which are switchable to active or inactive pickups. Thus my steel string guitar with active pickup can be played through one channel and the classical guitar with the inactive Soundspot can go through the other. The two channels are switchable with a foot switch when you want to change instruments or they can both be active at the same time. The tone controls are easy to understand and offer great flexibility. There is a "boost" pot which is activated by another foot switch. Lastly there is a mute foot switch for tuning etc. Lots of other great features. I can't find anything to criticize.

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                  (2 of 2 customers found this review helpful)

                   
                  4.0

                  Love it!

                  By 

                  from Fort Collins, CO

                  About Me Professional Musician

                  Verified Buyer

                  Pros

                  • Easy To Use
                  • Excellent Sound
                  • Good Warmth
                  • Great tone
                  • Great Volume Boost
                  • Lots of options
                  • Portable
                  • Powerful

                  Cons

                    Best Uses

                    • Amateur Recording
                    • Events
                    • Performances

                    Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

                    I play viola in a rock band. I have tried other pre amps and eventually just bought a Roland AC 90 to use as a preamp/monitor. Though at most gigs I will still use the AC 90 as a monitor the Tonebone has added IMMENSELY to the sound. I can't believe it has taken me this long to buy it. In many cases I don't even need the amp anymore to hear myself. The boost feature is a great bonus and works perfectly as you can adjust the volume of the boost or run loops through that feature.

                    I've only owned it for a few weeks however. I'll be interested to know how long the electronics hold up. I'd also like to have reverb and effects features in one box (I use other pedals now for that). However for the price I'd say this is 100% worth it and necessary if you want to play an acoustic stringed instrument (violin, viola, cello, bazuki etc.) in a rock band.

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                    (3 of 3 customers found this review helpful)

                     
                    5.0

                    Works wonders for my ghost system

                    By 

                    from Undisclosed

                    Comments about Radial Engineering Tonebone PZ-Pre Acoustic Direct Box Preamp:

                    Okay so I customized my Epi Dot and installed a Graph Tech Ghost system to give me a belnd of acoustic and electric tones. Problem is none of my other acoustic preamps sounded right. Some were too dark and some were too bright, Baggs to Tech 21 I wasn't finding the right sound. So I bought this seeing how I had already bought just about everything else.

                    At first I wasn't sure if I liked it. I mean I loved all it's features, the fx loop, the pre and post outs, dedicated tuner out, what's not to love? Accept I thought it sounded a bit sterile. But that was just me sitting around strumming chords all by myself.

                    Then I did what I should have done in the first place, I played it in a band situation and viola. My acoustic sound was sitting better in the mix and was not getting washed out by the bass. I was suddenly able to hear why I spent all that money on a ghost system in the first place.

                    I don't know what this preamp sounds like with actual acoustic guitar. I didn't buy it for that. I bought it for my piezo equipped Dot, and for that particular purpose it excells.

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