inDESIGN MMA-500 500W Multi-Media Mixer Amplifier (2RU)

The inDESIGN MMA-500 is a 500W multi-media mixer amplifier built for commercial and installation audio where reliability and flexibility matter. It combines a rugged class AB power amp with a built-in media player, so background music, paging and radio can all run from a single 2RU chassis.

Six input channels cover most install scenarios: three balanced mic/line inputs with 24V phantom power (channel 1 with VOX priority for paging override), plus three unbalanced line inputs. A transformer-isolated telephone paging input and an onboard tone generator (chime, bell, alert, evac) round out the front end.

Onboard playback includes DAB+/FM radio, USB media playback (MP3/WMA) and Bluetooth 5.3 streaming with a renameable device ID. Output is switchable between 4-8Ω, 70V and 100V constant-voltage lines, making it suitable for background music and paging across places of worship, conference centres, schools, hospitality venues and similar fixed installations.

• Power output: 500W RMS @ 100V/70V/4-8Ω
• 6 input channels (3x balanced mic/line w/ phantom power, 3x unbalanced line)
• Built-in DAB+/FM tuner, USB (MP3/WMA) and Bluetooth 5.3 playback
• Transformer-isolated paging input with VOX priority override
• Onboard tone generator: chime, bell, alert, evac
• Bass/treble EQ ±10dB, frequency response 40Hz-20kHz
• 2RU chassis, 485 x 88 x 350mm, 13.5kg