The Infinity SM 155 is a floor-standing loudspeaker that was known for its combination of advanced technology and sound quality in the audio market. It features a three-way design, incorporating multiple drivers to handle different frequencies, which aims to deliver a wide dynamic range and detailed sound reproduction. Typically, the speaker incorporates a 15-inch woofer for deep bass response, a midrange driver, and a high-frequency tweeter, allowing it to cover a broad spectrum of audio frequencies. The cabinet design often enhances the overall sound, contributing to a deeper bass and clearer mids and highs. The SM 155 is usually housed in a ported enclosure for improved bass performance. Users of the SM 155 have reported that it performs well across a variety of music genres, providing a rich listening experience. The sleek design with a wood veneer finish can complement different interior decors, making it both an aesthetic and audio addition to a home environment.