
Palmer elde 2-Kanal Passive DI-Box
Introduction
The Palmer Elde 2-Kanal Passive DI-Box is a high-quality line isolation device equipped with 6.3 mm jack sockets on the input and output sides, which can be operated with both balanced and unbalanced cables. Thanks to galvanic isolation via a high-quality transformer, hum loops are reliably eliminated. This DI-Box is perfect for balancing audio signals and allows long cable runs without introducing noise or interference.
Safety Instructions
- Please read these instructions carefully before using your Palmer Elde 2-Kanal Passive DI-Box.
- Keep all information and instructions in a safe place.
- Follow the instructions.
- Use the device in the prescribed manner only.
- Do not open the device and do not perform any modifications.
Packaging
- Packaging can be fed into the reusable material cycle using the usual disposal methods.
- Please separate the packaging in accordance with disposal laws and recycling regulations in your country.
Device
- This Palmer Elde 2-Kanal Passive DI-Box is subject to the European Waste Electrical and Electronic Equipment Directive in the currently valid version.
- WEEE Waste Electrical and Electronic Equipment Directive. Old appliances do not belong in household waste.
- The old device must be disposed of via an approved disposal company or a municipal disposal facility.
- Please observe the applicable regulations in your country!
- Observe all disposal laws applicable in your country.
- As a private customer, you can obtain information on environmentally friendly disposal options from the seller of the product or the appropriate regional authorities.
Batteries
- Observe all disposal laws applicable in your country.
- As a private customer, you can obtain information on environmentally friendly disposal options from the seller of the product or through the relevant regional authorities.
The product is not suitable for
- Persons (including children) with limited physical, sensory, or mental abilities or a lack of experience and knowledge.
- Children (children must be instructed not to play with the device)
Connections
- INPUT
Line input with 6a.3 mm jack socket suitable for both unbalanced and balanced cabling. Use a shielded audio cable to connect, for example, a keyboard to the Line Isolation Box. - OUTPUT
Line output with a 6.3 mm jack socket suitable for both unbalanced and balanced cabling. Use a shielded audio cable to connect the Line Isolation Box to an input of a mixer or audio interface.
Use a shielded audio cable to connect instruments to the DI-Box. If you need to split a line-level signal to multiple devices, the Palmer Peene 2-Kanal Passive Line-Splitter User Guide provides a detailed reference for wiring examples.

Wiring Example

Technical Data
The following technical specifications apply to the Palmer Elde 2-Kanal Passive DI-Box, providing all the details you need for proper setup and operation:
| Product number | PWUPPER |
| Product type | Line Isolator |
| No. of channels | 1 |
| Type | passive |
| Transformer isolated | yes |
| No. of inputs | 1 |
| Input type | symmetrical/asymmetrical |
| Input connections | 6.3 mm jack |
| No. of outputs | 1 |
| Output type | symmetrical/asymmetrical |
| Output connections | 6.3 mm jack |
| Ground/lift switch | no |
| Housing | Aluminium continuous casting |
| Dimensions (H/W/D) | 110 x 50 x 50 mm |
| Weight | 0.3 kg |
| Ambient temperature for operation | -20°C…70°C |
| Relative air humidity | <80%, non-condensing |
| Included accessories AUDIO | Rubber feet, inscription label |
| Max. Input level (< 1% THD, 20 Hz) | +10 dBu |
| Max. Input level (< 1% THD, 1 kHz) | +32 dBu |
| Frequency response (±2dB, relative 1kHz) | 20 Hz – 20 kHz |
| Input impedance (1 kHz) | 17 kΩ |
| Output impedance (1 kHz) | 500 Ω |
| THD (30 Hz, +4 dBu, unity, unweighted) | < 0.09 % |
| THD (1 kHz, +4 dBu, unity, unweighted) | < 0.002 % |
| IMD (SMPTE) (60 Hz / 7 kHz, 4:1, +4 dBu) | < 0.002 % |
| Transformer ratio | 1:1 |
Manufacturer’s Declarations
Warranty & Liability: Adam Hall GmbH provides the manufacturer’s warranty and limitation of liability for the Palmer Wupper Line Isolation Box, located at Adam-Hall-Str. 1, 61627 Neu-Anspach, Germany.
CE Conformity
Adam Hall GmbH confirms that the Palmer Wupper Line Isolation Box meets applicable guidelines, including the Low-Voltage Directive (2014/35/EU), EMC Directive (2014/30/EU), RoHS (2011/65/EU), and RED (2014/53/EU).
FCC Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.
UKCA- Conformity
Hereby, Adam Hall Ltd. declares that Palmer Naab 2-Kanal Media DI-Bo,x this product, Palmer Pan16 19“ DI-bo,x meets the following guidelines (where applicable): Electrical Equipment (Safety) Regulations 2016, Electromagnetic Compatibility Regulations 2016 (SI 2016/1091). The Restriction of the Use of Certain Palmer Pan16 19“ DI-box Hazardous Substances in Electrical and Electronic Equipment Regulation 2012 (SI 2012/),32,) Radio Equipment Regulations 2017 (SI 2016/2015), Adam Hall Ltd. | The Seedbed Bus. Centre | SS3 9QY Essex | UK
Customer Support
- Email: Info@adamhall.com
- Website: www.adamhall.com/compliance
- Ph: +49 (0)6081 / 9419-0
FAQs
Q: What is the Palmer Elde 2-Kanal Passive DI-Box used for?
A passive direct injection (DI) box called the Palmer Elde transforms high-impedance or unbalanced instrument signals into low-impedance, balanced signals that can be used in mixers, audio interfaces, or public address systems. Keyboards, basses, guitars, and other electronic instruments are perfect for it.
Q: Does it require external power?
No, it is completely passive and doesn’t need phantom power or batteries. On the other hand, the device is safe if phantom power is used.
Q: Can it handle both mono and stereo signals?
Yes, each channel functions separately, so if the inputs support it, you can attach one stereo source or two mono instruments.
Q: Will the DI-Box affect my sound quality?
No, the Elde DI-Box offers a clear, transparent signal with little phase or frequency loss because it is made to preserve audio integrity.
Q: Can I use it with passive and active pickups?
Indeed, it is compatible with both active and passive instrument pickups. Colourless signal integrity is guaranteed by the passive circuitry.
Q: What is the frequency response of the DI-Box?
All tones, from deep bass to high treble, are authentically delivered thanks to the device’s wide frequency response.
Q: Can it handle multiple instruments at once?
Yes, you can connect two instruments at once because it has two distinct channels. Because each channel is autonomous, crosstalk is avoided.
Q: Can I use it for line-level signals?
Although it is designed for instrument-level signals, it is capable of handling line-level signals as well.



