The Soundcraft 5035679 Si Expression Series 36 Channel Digital Mixer is a compact, powerful, and affordable digital mixing console designed for small to medium-sized live sound applications, houses of worship, and mobile production. It features 36 fully-processed input channels, each equipped with a premium mic preamp, 4-band parametric EQ, dynamics processing (gate and compressor), and flexible routing. The console is built around a intuitive user interface that includes a high-resolution color LCD screen for metering and configuration, dedicated rotary encoders for critical parameters, and motorized faders that recall scene memories instantly, bridging the gap between simple analog mixers and more complex digital systems.

At its heart, the Si Expression utilizes the same FPGA-driven audio engine and proven software platform as the larger Si consoles, ensuring high-quality 24-bit/48kHz audio processing and effects. It includes built-in Lexicon effects processors for reverb and delay, and offers 8 mix busses (configurable as auxiliaries, groups, or matrices) along with 4 stereo graphic EQs on the outputs for comprehensive system tuning. Despite its accessible size and price point, it does not sacrifice professional features, offering comprehensive scene memory, DCAs for grouping channels, and USB audio connectivity for two-channel recording and playback.

The console strikes an ideal balance between capability and usability. Its physical control surface provides immediate, tactile access to the most-used functions, reducing menu diving and allowing for fast, intuitive operation during live events. The combination of robust processing, reliable hardware, and the trusted Soundcraft sonic signature makes the Si Expression 3 a versatile and dependable centerpiece for engineers who require digital mixing power and flexibility in a streamlined, cost-effective package suitable for a wide range of permanent and portable applications.