The MIDAS DL155-UL is a professional 19-inch rack-mountable stagebox designed as a remote audio input expander for compatible MIDAS digital mixing systems, such as the Heritage-D series. Its primary function is to move the microphone preamplifiers and analog-to-digital conversion closer to the sound source on stage, thereby preserving signal integrity by running a single, rugged digital cable (typically Cat5e) to the mixer instead of multiple long analog microphone lines. The unit is equipped with eight high-quality, remotely controllable microphone preamps, renowned for their transparent, musical character and derived from MIDAS's heritage in live sound console design. These preamps offer substantial gain range, low noise, and high headroom, making them suitable for everything from delicate acoustic instruments to high-SPL sources like kick drums and guitar amplifiers.

The stagebox provides comprehensive connectivity and flexibility. Each of the eight channels features a combination XLR/TRS input socket, accommodating both microphone and line-level signals. Channels are independently equipped with phantom power, polarity reverse, and a high-pass filter, all of which can be controlled from the surface of the connected digital mixer. The DL155-UL converts the analog signals to digital with high-resolution converters and transmits them, along with control data and clocking, via its proprietary digital snake protocol over a single Ethernet cable to the mixer's DLPlus port. This setup also carries digital audio from the mixer back to the stagebox, which provides eight line-level analog outputs on TRS jacks for driving stage monitors or other local equipment.

Built for the rigors of touring, the DL155-UL features a robust all-steel chassis, a internal universal power supply, and a clear, informative front-panel display for status and configuration. It is designed for seamless integration into the MIDAS digital ecosystem, offering plug-and-play operation with automatic sample rate and clock synchronization. By centralizing high-quality analog I/O at the stage and leveraging a simple, reliable digital connection, the MIDAS DL155-UL significantly reduces stage clutter, simplifies setup, and ensures that the sonic quality of the famous MIDAS preamp is delivered directly to the digital mixing engine.