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A black rectangular stereo DI box with quarter-inch jacks and XLR connectors

Klark Teknik

Klark Teknik DI 20P PRO stereo passive DI box with Midas transformer

SKU CH-KQ6Q-FX26M

Passive stereo DI box with a custom MIDAS transformer and switchable input attenuation for instrument, line and speaker levels

  • Passive operation removes the need for any external power supply
  • Custom-built Midas transformer preserves signal integrity across the full frequency range
  • Switchable input attenuation handles guitar, line and speaker levels without distortion
  • High-headroom design delivers clean dynamic response for keyboards and samplers
  • Neutrik XLR outputs provide reliable balanced connections to mixing consoles

Stereo passive DI box

The Klark Teknik DI 20P PRO is a passive stereo direct injection box designed for connecting keyboards, samplers and other electronic instruments to mixing consoles. It uses a custom-built MIDAS transformer to maintain signal integrity across the audio chain. The unit operates without any external power supply, making it suitable for stage and studio use. Its high headroom design preserves the dynamic detail of electric and acoustic instruments.

Transformer and input handling

The custom MIDAS transformer provides galvanic isolation and handles high signal levels without distortion. A switchable input pad attenuates guitar, line or speaker level sources to match the transformer input. Neutrik XLR outputs deliver balanced signals to consoles or interfaces with reliable locking connections. The passive circuit adds no noise and requires no batteries or phantom power to operate.

Connectivity and signal routing

Stereo 1/4 inch TS inputs accept unbalanced instrument or line level signals from two channels. Parallel through connectors on 1/4 inch TS pass the original signal onward to an amplifier or monitor while the isolated XLR feeds the mixer. This routing lets performers hear their amps while sending a clean balanced feed to front of house. The rugged chassis protects the transformer and switches during transport and daily use.

Highlights

  • Passive operation removes the need for any external power supply
  • Custom-built Midas transformer preserves signal integrity across the full frequency range
  • Switchable input attenuation handles guitar, line and speaker levels without distortion
  • High-headroom design delivers clean dynamic response for keyboards and samplers
  • Neutrik XLR outputs provide reliable balanced connections to mixing consoles

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the DI 20P PRO between my stereo keyboard and the mixing console, and which pad setting should I use?

Plug the keyboard outputs into the 1/4" TS stereo inputs, run the Neutrik XLR outputs to the console, and select the switchable input attenuation that matches your source level — guitar, line or speaker.

What part of the DI 20P PRO is most likely to need attention after years of stage use?

The 1/4" TS input and through jacks and the Neutrik XLR connectors are the mechanical points that see repeated plugging; the custom-built MIDAS transformer itself is passive and has no wear items.

At what signal level does the DI 20P PRO start to saturate during a long set?

The high headroom design and MIDAS transformer are built to handle instruments, line and loudspeaker levels without saturation; the switchable pad prevents overload before the transformer sees excessive signal.

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