The Acus AllAround 4 is a compact, high-fidelity acoustic amplifier crafted for instrumentalists, vocalists, and home studio creators seeking uncompromised sonic clarity in a portable desktop format. Driven by a two-way bi-amplification system, this versatile combo delivers 40 watts of clean power when connected to mains electricity, or 15 watts of off-grid output via USB-C power bank operation. It provides a transparent, uncoloured sound stage for acoustic guitars, violins, and vocals alike.
Designed to serve as a high-grade practice amp, desktop monitor, or mobile broadcast hub, the AllAround 4 combines rich analog tone-shaping with digital connectivity. Whether tracking ideas at home or streaming live to an online audience, it offers complete control over your mixed acoustic performance without complex setups.
Versatile Dual Powering Capabilities
Flexibility is central to the AllAround 4 design. Powered by the included 24V DC external power adapter, the amplifier produces its full 40-watt output for maximum headroom and projection. For total mobility off the grid, the unit can also run via its USB-C port using a standard 5V power bank, providing 15 watts of continuous performance.
This dual-power architecture frees you from reliance on fixed mains outlets during outdoor sessions or quick mobile setups. It ensures your acoustic rig remains ready to perform wherever your inspiration leads.
Bi-Amplified Two-Way Speaker Architecture
To preserve natural sound across the entire frequency range, the amplifier features a bi-amplified 2-way speaker system managed by an electronic crossover. A 30-watt, 4" woofer handles low and mid frequencies with depth, while a dedicated 10-watt dome tweeter reproduces clean high-end detail, delivering a 70Hz to 20kHz frequency response with a maximum SPL of 96dB.
The cabinet is constructed from genuine acoustic birch plywood, a material chosen for its low resonance and structural strength. This natural wood enclosure helps keep acoustic instruments and vocals warm, organic, and true to their source.
Flexible Dual Input Control
Built to handle two sources simultaneously, the AllAround 4 features independent inputs for both a microphone and an instrument. Channel 1 includes an XLR microphone input alongside a standard instrument jack, letting you run a vocal mic and an electro-acoustic guitar side-by-side with separate volume controls.
Overall tone shaping is managed via a shared 2-band EQ for fine-tuning bass and treble response. An onboard effect level knob lets you adjust the built-in digital spatial reverb, while a master volume control manages total system output.
Modern Streaming and Audio Connectivity
To support digital content creators, the AllAround 4 includes an array of connectivity features. An included Bluetooth receiver plugs directly into the unit for wireless audio playback from smartphones or tablets, simplifying rehearsal alongside backing tracks.
Additionally, dedicated TRRS audio in/out connectivity allows direct analog cabling to mobile devices or recording interfaces. This direct interface link makes live streaming and home tracking straightforward, sending a clean acoustic mix directly to your chosen recording software or streaming platform.
Acus AllAround 4 Specifications
- System Format - two-way bi-amplified acoustic combo with electronic crossover.
- Power Output - 40W RMS via included 24V DC power supply; 15W via standard 5V USB-C power bank.
- Frequency Response - 70Hz - 20kHz.
- Maximum SPL - 96dB (82dB sensitivity at 1W/1m).
- Speakers - 4" woofer (30W) and 0.7" dome tweeter (10W).
- Inputs - 1 x XLR microphone input, 1 x 1/4" instrument jack, TRRS audio in/out, USB-C power port.
- Wireless Connectivity - Bluetooth receiver included for audio streaming.
- Tone Controls - 2-band EQ, individual channel volumes, onboard effect level, and master volume.
- Cabinet Material - acoustic birch plywood construction.
- Power Source - external 24V DC power adapter (included) or standard 5V USB-C power bank (not included).
Weight and Dimensions for Acus AllAround 4
- Dimensions (cm) = 25.4 L x 15.3 W x 12.3 D
- Weight (Kg) = 2.40
The Acus AllAround 4 earns its place as a practical, high-quality solution for acoustic musicians requiring desktop convenience and mobile flexibility. Combining bi-amplified clarity, USB-C power bank compatibility, and modern streaming connectivity, it provides dependable acoustic performance for practice and recording.