The Opus DZM20 Digital Zone Module is a power amplifier designed by Opus, a reputable brand in the audio industry. The model DZM20 is specifically tailored for use as a zone amplifier, providing high-quality sound and power for specific audio zones within a home audio or HiFi system. With its digital technology and zone control features, the Opus DZM20 offers a reliable and versatile solution for enhancing the audio experience in various room settings.

I have a large number of these available, as well as lots of other Opus multi-room equipment, ceiling speakers etc.