* Optimized for orchestral instruments on a live stage
Adjustable load for piezo and magnetic pickups
* Variable low-cut filter to
control bass resonance
* 48V phantom powered, does not require
The Radial PZ-DI™ is a unique direct box that is specifically designed
for acoustic and orchestral instruments. Unlike most direct boxes that are
limited to a 'one size fits all' design, the PZ-DI lets you properly match the
input impedance to the source to optimize the frequency response, dynamics and
feel so that no matter what type of pickup you employ, you will enjoy smoother,
more musically pleasing results.
The design begins with a 3-position load adjustment switch: The 1 meg-ohm
position delivers the classic impedance found on most active DI boxes. The
220k-ohm setting warms up the tone of a magnetic pickup to give you the feel and
tone as if connected to a tube amplifier. The ultra-high 10 meg-ohm impedance is
used to compensate for the harsh, squawky tone that usually plagues
piezo-equipped instruments. This is followed by a fully variable high-pass
filter that lets you 'size the instrument' by gently rolling off bass
frequencies to eliminate unwanted resonance. You could for instance, retain the
low frequencies on a cello or increase the cut-off point to better suit a
violin. For active instruments such as acoustic guitars that incorporate a
battery powered preamp, you can engage a low-pass filter to gently soften the
hard edge for a smoother more natural tone.
To maximize signal handling and reduce distortion, the PZ-DI incorporates
an innovative DC to DC switching supply that converts the phantom power to
deliver extra headroom. This provides ample dynamic range for acoustic
instruments. Should an extra loud source such as an active bass or digital
keyboard be encountered, simply activate the -15dB pad to satisfy the situation.
Other problem solvers include a 180° polarity reverse switch to tame hot spots
on stage that can cause feedback and a ground lift switch to help eliminate hum
and buzz caused by ground loops.
The Radial PZ-DI is a ground breaking direct box that can instantly adapt
to all types of pickups so that you can enjoy the full frequency response and
dynamics of an orchestral string instrument, smooth-out the peaks of bluegrass
fiddle, banjo or mandolin, split off a bass guitar without excessive loading, or
naturally amplify an acoustic guitar without the usual tone-altering
"With the PZDI, we were able to integrate multiple
piezoelectric devices seamlessly and with glorious results. Radial has once
again proven they are a cut above the rest."
(Rush, Shakira, Marilyn Manson, Def