libretto42
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Surtitle hardwareEquipment that simply runs — for years.

From the seat to the server room: every device is built for continuous use in the theatre. It runs independently of the internet and can be maintained remotely.

Seat display

Not a text panel.
A managed computer at the seat.

The seat display isn’t an off-the-shelf device; it was developed specifically for mounting on theatre seats — and designed for intensive use over many years.

Musiktheater Linz: a finger taps a seat display showing the page for Gioachino Rossini’s “Guillaume Tell”

  • Made in Germany

    Developed and manufactured in Germany by our partner DH electronics.

  • Made to fit your venue

    We adapt size, bracket, frame and mounting to your seats, not the other way round.

  • Built for continuous use

    Devices and spare parts remain available for at least 10 years.

Detail of the bracket: seat display with a brushed metal rail and ball catch on the side
The seat display’s bracket

  • Instantly ready

    Starts in under 10 seconds and shows the content you want straight away, no long boot-up before curtain up.

  • Silent

    No fan, no operating noise during the performance.

  • One cable per row

    The devices in each row are daisy-chained.

In-house server

Runs in the building.
Independent of the internet.

A server sits right in the building and handles the entire operation during the performance — only the translation and preparation tasks happen in the cloud.

  1. In the cloud

      • Translate the librettoIn the Cloud Editor, from anywhere
      • Update the infotainmentIn the CMS

  2. In the house, even offline

    1. Player at the deskOne click shows the next text
    2. Server in the houseHas all the data stored, supplies every device and monitors them with Maestro
      • Seat displaysSubtitles and infotainment at every seat

  • Fail-safe

    The server stores librettos and infotainment and keeps them up to date while there is internet. If it goes down or the connection is weak, the performance runs reliably on what is stored.

  • All in one device

    Instead of many separate systems: the server supplies every device, runs the infotainment, monitors everything via Maestro and collects statistics.

  • Mobile demo version

    For demonstrations without a fixed installation there is a portable version with seat displays.

Distribution & playback

From the control room
to every screen
in the building

Prepared videos, images and texts appear on every screen in the building, in venues of any size.

Synchronised playback on several tablets / seat displays

  • Synced video

    Videos play on all seat displays in sync and without stutter, designed for venues with more than 900 seats.

  • LED wall & projection

    The Desktop Player drives the LED wall and projection directly through the existing connections (HDMI).

  • Existing equipment

    Even older equipment can be connected, including systems never meant for libretto42.

  • libretto42 Connector

    A compact box for surtitling, also available on its own, for instance for smaller venues.

  • SIGPlay42 Duo

    A compact player with two outputs, developed together with signage42.

libretto42 Connector: compact black box with a touchscreen and connectors on the side
libretto42 Connector
Seat display with a touchscreen in a flat black housing, two network ports and a power connector along the bottom edge
The seat display, with the cable connectors along the bottom

Hardware partner

Our partner for custom-built
control devices

For over 30 years, DH electronics has developed and produced custom electronics — reliable, elegantly designed and precisely matched to the needs of cultural venues.

In close cooperation with lemon42, DH electronics creates hardware and software solutions that fit naturally into any venue: technically sophisticated, modern and understated.

More about DH electronics

What makes our solution special

More about control devices from DH electronics

  • Engineered & Made in Germany

    Developed and manufactured to the highest quality standards

  • Customisable

    Display size, bracket, frame and mounting to suit the space in your venue

  • Minimally invasive integration

    Existing seating and building fabric stay intact — also suitable for listed buildings

  • Perfect interplay

    Hardware and software from a single source, thanks to the close partnership between DH electronics and lemon42

  • Secure and future-proof

    Thanks to state-of-the-art software, our devices meet applicable cyber security requirements

A box parapet at the Vienna State Opera with built-in seat displays in front of red velvet chairs.

See libretto42 at your venue

Arrange a demo tailored to your setup — we’ll get back to you quickly and personally.

Request a demoContact us