Passive DI-Box Essential

It all comes down to the transformer: in passive DI boxes, it is the most important component. At the heart of the Essential passive DI box is the Lundahl LL1935 transformer.

Passive DI Box 200 front
  • Lundahl LL1935 transformer: featuring a Mu-metal core and a Mu-metal housing for magnetic shielding. The transformer is particularly suitable for matching high-impedance pickups to low-impedance microphone preamp inputs.
  • – 20 dB pad – attenuates the input signal by 20 decibels
    Ground/Lift switch: Galvanically isolates the ground line for noise-free sound without hum at the touch of a button
  • Ground/Lift switch: Galvanically isolates the ground line for noise-free sound without hum at the touch of a button
  • XLR output
  • Link output socket: Passes your input signal through unchanged 1:1 – directly to your stage amp, pedalboard or monitor
  • Switch E-Switch, Neutrik sockets
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HORST SITTE AUDIO – HIGH QUALITY DI BOXES 

We assemble the hand-selected components into the robust and user-friendly housing we have developed ourselves:

  • Made from 60 x 40 mm square aluminium tubing with a 4 mm wall thickness, milled to a length of 127.5 mm. Compact, indestructible and lightweight!
  • Engraved signal path: Even in poor lighting conditions, you can quickly identify the inputs and outputs.
  • Housing connection: The housings can be quickly connected to one another using a locking system without the need for tools.
  • Protective rim: The protruding rim protects switches and sockets from accidental operation or knocks.
  • Recesses in the housing for the use of angled plugs.
  • Distinctive: The surfaces are glass bead blasted and colour-anodised. This not only ensures the DI box sits comfortably in your hand, but also allows you to identify the model at a glance. Neither heavy use nor cleaning agents can damage the laser-etched lettering.
  • Personalised: On request, we can engrave your name or logo on the back, ensuring there is no risk of mix-ups. nimble_asset_DSC8024-scaled

 

What we look for in DI boxes: signal fidelity, minimal distortion and durability. To achieve this, we carefully select every single component for the DI boxes from HORST SITTE AUDIO:

  • Lundahl audio transformers: : These premium Swedish transformers offer a wide frequency range, ensuring that even loud sources with high input levels are transmitted to the mixing desk without any issues – perfect for our passive DI boxes. Long cable runs can be bridged without distortion using this transformer. We use exclusively Lundahl transformers with MU-metal cores and shielding. This ensures that magnetic fields do not cause distortion, which can otherwise occur particularly in the bass range. .
  • Switches from E-Switch: The US manufacturer specialises in electromechanical switches. We are impressed by their high cycle life and quiet switching.
  • Nichicon capacitors:: These Japanese high-end audio components offer minimal distortion, excellent frequency response and long-term stability without hum or colouration. We value the signal purity of these capacitors.
  • Neutrik sockets: We use exclusively XLR sockets from Neutrik, the world’s leading manufacturer of professional audio connectors based in Liechtenstein, for all inputs and outputs. These durable sockets ensure robust and reliable connections and have been the high-end standard on stages, in studios and in media technology for decades.
  • PCBs:We use PCBs from the Netherlands. When it comes to the layout – that is, the arrangement and routing of the traces, components, ground planes and spacing – we ensure short, logically routed signal paths for loss-free signal transmission.