Detail 01
10M / 1M / 220K-ohm input impedance
Selects among three input-load settings for different pickup sources.
Product detailSKU #1350920026925
Radial EngineeringPZ-DI Acoustic/Orchestral Instrument Active Direct Box
1/4
Independent shopping perspective
The Korena take
PZ-DI gives acoustic and orchestral pickups three selectable input loads, so the direct box can be matched to the source: 1M ohm, 220K ohm, or 10M ohm. A variable high-pass filter lets you reduce low-frequency resonance, while the low-pass filter can soften the edge of active, battery-preamped instruments. The -15 dB pad, polarity reverse, and ground lift address loud inputs, feedback hot spots, and ground-loop noise in a live signal path.
Strong match
Who this is for
- Stage setups that need pickup-specific impedance matching for acoustic or orchestral instruments.
- Reducing unwanted low-frequency resonance from string instruments while retaining the desired low end.
- Acoustic instruments with battery-powered preamps that need the available low-pass filter.
Consider the trade-offs
When to look elsewhere
- Systems without available 48V phantom power for operating the direct box.
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Variable high-pass filter
Lets you gently roll off bass frequencies to address unwanted resonance.
Detail 03
-15 dB input pad
Accommodates especially loud sources such as active bass or digital keyboard.
Detail 04
14-gauge steel chassis with baked enamel finish
The unit uses a steel outer shell and chassis.
Final check
Know before you order
- 01Confirm that 48V phantom power is available; the PZ-DI uses it for power.
- 02Choose the input-load setting according to the pickup and response you need.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can it be used with piezo pickups?
Yes. The 10M-ohm setting is intended to compensate for the harsh, squawky response associated with piezo-equipped instruments.
02Can it help with hum from a ground loop?
Yes. It includes a ground-lift switch for hum and buzz caused by ground loops.
03What does the polarity reverse switch address?
It can tame stage hot spots that cause feedback.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsSound
- Frequency Response
- 20Hz 20kHz
- Power
- 48V phantom - proprietary digital switching
2 detailsPickups & controls
- Audio Circuit Type
- Proprietary analog circuit with low-noise FET op-amp
- Pickup Configuration
- Piezo
1 detailsBody & build
- Construction
- 14 gauge steel chassis and outer shell, baked enamel finish
5 detailsConnections & power
- Input Impedance
- 10M/1M/220K-Ohms
- Output Impedance
- 200 Ohms - nominal
- Equivalent Input Noise
- -98dBu
- Input Impedance with Pad On
- 50K-Ohms
- Input Pad
- -15dB
1 detailsSize & weight
- Weight
- 1.2
8 detailsOther
- Configuration
- AES standard (pin-2 hot)
- Dynamic Range
- 105dB
- Maximum Gain
- +4.6dB
- Size
- 2.75 inch x 4.25 inch x 1.75 inch (70 x 108 x 45mm)
- XLR Configuration
- AES standard (pin-2 hot)
- Fcc Approval
- Complies with section 15 of the FCC Rules
- Warranty
- Radial 3-year, transferable
- Total Harmonic Distortion
- 0.02% /td>
