Based on this product's specifications, here are some alternatives and similar models
Power amplifier Omnitronic MTC-6408 8-channel, total 640W output
Summary description:
Omnitronic MTC-6408 is an 8-channel power amplifier delivering a total of 640 W output. Designed for multi-zone audio setups, the unit provides discrete channels for connecting multiple speakers or line outputs. Suitable for venues, small installations, and rental systems, it offers straightforward integration, stable power distribution across channels and practical benefits for distributing audio to several zones simultaneously.