Adastra A2300 Commercial Mixer Amplifier 2 × 300W

The Adastra A2300 combines stereo amplification, music playback and microphone mixing in a single commercial audio amplifier. Suitable for background music and announcements in cafés, shops, restaurants, bars and reception areas, it provides straightforward control for venues needing one stereo audio zone.

Its Class D amplifier delivers 2 × 300W RMS at 4 ohms or 2 × 150W RMS at 8 ohms. With built-in media playback, analogue connections and a digital optical input, the A2300 accommodates everyday music sources alongside compatible AV equipment.

Stereo or dual mono for your speaker layout

Selectable stereo and summed dual mono operation lets you adapt playback to the space. Stereo preserves the left and right channels, making it suitable where both speakers serve a shared listening area.

Dual mono combines both channels into each output. This is useful for commercial background music systems where customers move around the premises or sit closer to one speaker, helping them hear the complete mix throughout the listening area. Bass, treble and channel volume controls provide adjustment for the room and connected speakers.

Flexible music sources in one rack unit

The integrated player offers Bluetooth connectivity, USB and microSD MP3 playback, plus an FM tuner. An included infrared remote controls the player, while an external aerial connection supports FM reception.

For fixed installations, the two stereo RCA line inputs accommodate separate playback equipment. A 3.5mm auxiliary input provides another connection option, and the TOSLink optical input accepts digital audio from compatible sources. This combination suits businesses that need convenient wireless playback alongside permanently connected equipment.

Announcements and installation control

Two microphone inputs with individual level controls allow spoken announcements to be mixed into the system. Selectable voice override gives microphones priority over line-input audio, helping speech stand out when music is playing.

The 2U rack format brings playback, mixing and amplification together without requiring separate units for each task. A compatible alarm panel can activate the rear-panel 24V emergency mute connection, while protection circuits cover overheating, over-current, over-voltage and short circuits.

Features

• Two-channel Class D commercial mixer amplifier.
• One stereo output zone with selectable audio source.
• Output power at 4 ohms: 2 × 300W RMS.
• Output power at 8 ohms: 2 × 150W RMS.
• Selectable stereo or summed dual mono operation.
• Bass and treble EQ with channel volume controls.
• Integrated Bluetooth receiver.
• USB and microSD MP3 playback.
• FM tuner with F-type external aerial connection.
• Two stereo line inputs via left/right RCA sockets.
• 3.5mm stereo auxiliary input.
• TOSLink optical S/PDIF digital input.
• Two 6.3mm mono microphone inputs with front or rear connection options.
• Individual microphone levels and selectable talkover.
• Input controls for Aux, Media, Line 1, Line 2, Mic 1 and Mic 2.
• Rear-panel 24V emergency mute terminals.
• Frequency response: 20Hz–20kHz, ±0.5dB.
• Dynamic range: 92dB.
• Total harmonic distortion plus noise: below 0.1%.
• Line input sensitivity: 0.775V RMS.
• Auxiliary input sensitivity: 0.480V RMS.
• Input impedance: 10k ohms.
• Thermal, over-current, over-voltage and short-circuit protection.
• Power supply: 230V AC, 50Hz via IEC.
• 2U rack format.
• Includes infrared media-player remote and IEC power lead.
• Dimensions: 482 × 290 × 88mm.
• Weight: 6.97kg.

FAQs

Q: Does the A2300 provide two independent music zones?
A: It provides two amplifier channels forming one stereo zone. Dual mono sends the same combined audio to both outputs.

Q: What does the 2 × 300W rating mean?
A: Each channel delivers 300W RMS into a 4-ohm load. With an 8-ohm load, each channel delivers 150W RMS.

Q: Can I play music without an external media player?
A: Yes. The built-in player supports USB and microSD MP3 playback and FM radio. Bluetooth also allows playback from a compatible phone or tablet.