ToneBone PZ Deluxe 1 Channel Preamplifier

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  • ToneBone PZ Deluxe 1 Channel Preamplifier
  • ToneBone PZ Deluxe 1 Channel Preamplifier
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Description

This Radial Tonebone PZ-Deluxe really impressed us. This powerful and flexible acoustic preamplifier is a great tool for both studio or stage, and it's safely packed inside one of Radial's usual rock solid floor pedals.

Inside its small (5.75" x 3.75" x 2.00") and durable chassis (14ga steel, heavy-duty switches, metal pots) is a host of tremendously useful features:

  • Switchable input buffer (6.8K Ohms/10M Ohms)
  • Low cut filter (multi-setting)
  • Dedicated tuner output (buffered)
  • Three band EQ with semi-parametric Mid control
  • Boost Footswitch with level control (up to 13dB)
  • Mute Footswitch cuts output to main outputs (tuner out stays active)
  • ¼" high-impedance output (for amps) with phase reverse
  • XLR low-impedance direct out (DI) with ground lift and phase reverse

As you've probably guessed, we're primarily offering it as a rock-solid preamp for use with upright bass, but it's equally useful for ALL acoustic instruments, like acoustic guitar, banjo, violin, cello, mandolin, bouzouki or lute (among others). It has lots of flexibility and can be used to enhance the sound of virtually any acoustic or electric instrument.

So what do all those great features do? The three-band EQ has controls for Bass and Treble, as well as a mid-range control which has an adjustable frequency control (called a "Semi-Parametric Equalizer," it adds a knob to allow you to choose the center frequency affected by the boost/cut, as to better sculpt your tone.) Mids can be particularly useful in helping you to "cut through" the dense mix of a large band, and by adjusting what frequency is affected, you can dial in just the right amount of punch.

Also tremendously useful: The low cut filter (also known as high pass filter). Piezo pickups have an incredibly wide range of frequencies - including those that are too low to even be heard! By reducing the output of the very lowest, subsonic frequencies, this can reduce the likelihood of certain types of feedback and can help reduce the workload of your amplifier. Radial actually recommends using the filter in the "bypass" setting, but in testing, we found that using the "low-mid cut" (middle setting) actually improved clarity and total sound. Your mileage may vary, as always - every bass and amp is different - but consider it a good reason to experiment and decide for yourself!

The amp and DI outputs also have a switch for phase reverse. Why? In some instances, as you move around the stage, you will notice that feedback or resonance seems to increase in certain spots between the wedge monitor and your personal amp. This is caused by nodes either amplifying each other or cancelling each other out at various frequencies. You can reverse the (absolute) phase with the 180° polarity reverse. This can often help minimize this occurrence.

(Learn more about Semi-Parametric EQ's, Low Cut Filters and phase controls in our "Learn your amp" FAQ!)

The other features are useful too - the "MUTE" switch is always ready for a quick, silent onstage tune (or just to quiet an instrument not being actively played), and the "BOOST" switch is perfect for when you need to take a solo - or change from pizz to arco (some pickups have very different output volumes depending on whether or not you're bowing). The boost has a variable level setting, so you can set just the right amount of "extra" push, whether you need just a subtle boost or need to go "to 11."

Specifications
Circuit type: Class A FET Hybrid Input Stage
Frequency response: 20Hz ~ 18kHz (0/-3dB)
Dynamic range: 105dB
Total harmonic dostortion: 0.03% @ -20dB output
Equivalent Input Noise -108dBu
Intermodulation Distortion: 0.07%
Input Impedance - PZB Off: 6.8K-ohms
Input Impedance - PZB On: 10M-ohms
Gain - 1/4" Input to stage amp out: +16dB (PZB-Off)
Gain - 1/4" input to XLR Out: +21dB (PZB-Off)
Gain - PZB Piezo booster circuit: +10dB
Gain - Boost On: +13dB maximum
Output Impedance - XLR Output 4k-ohms
Size: (6.1" x 3.8" x 2.1") (155 x 96.5 x 53mm)
Weight: 1.75lbs (0.8kg)
Power Requirement: 15V ('Nominal) 400mA Center Pin Positive Adapter

Like the features of this preamp but need a second channel? Check out the PZ-Pre, a two-channel preamp with many of the same features as the PZ-Deluxe - we stock them, too!

WARNING: Cancer and/or Reproductive Harm
According to California state law, if you are a resident of California, we
must notify you that this product contains chemicals known to the state
of California to cause cancer, birth defects or other reproductive harm.
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Warranty Information

Standard Warranty:
All products sold by RADIAL come with a 1-year limited warranty. This limited warranty protects you against defects in workmanship. The warranty does not cover any consequential or inconsequential damage or any losses. Specifically, if you have a problem due to defect, you must make the arrangements and cover the costs to return the product to us with a copy of the original sales invoice and we will repair the product and return it to you at our cost. All warranty claims require a return authorization. Contact the RADIAL service department for details.

Transferable 3-Year Warranty:
Some RADIAL products come with a 3-Year Transferable Warranty. This means that if you buy the product and decide to sell it, the warranty can be transferred to the person that buys it, thus providing continuous warranty support and added value. This Transferable Warranty follows the same procedures and limitations outlined in the Standard Warranty. This means that if you sell the product, you must provide the buyer with a copy of your original invoice so that he, in turn, may be able to submit this should a warranty claim be required.

Warranty Limitation:
As with all typical warranties, only manufacturing defects are covered. Furthermore, parts that are subject to wear and tear such as switches, potentiometers and tubes are not covered under this warranty. This, however, does not mean that these will not be repaired or replaced free of charge. We pride ourselves in supporting the products we sell and will often exchange these parts free of charge pending the age of the device. This decision will be undertaken by RADIAL and in no way obliges the company to perform such tasks.
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