ARRAROWN ZK-MT21 2.1 Channel Bluetooth 5.0 Power Amplifier | 50W×2 +100W Subwoofer | 12-24V

ARRAROWN ZK-MT21: a compact 2.1 channel Bluetooth power amplifier

Upgrade your home speakers with a smart, compact amplifier that blends clean power with flexible inputs. The ZK-MT21 delivers a 2.1 channel setup: 50W per channel for the left and right channels, plus a potent 100W dedicated subwoofer output. This arrangement helps create a fuller soundstage and a more engaging listening experience from a single board suitable for shelves, cabinets, or custom enclosures.

Inside, a large energy-storage capacitor and multiple low-noise preamplifiers work together to minimize distortion at higher volumes, so you can enjoy dynamic music or cinematic moments without harshness. An external antenna connection is available via a dedicated holder, and note that the antenna is not included in the package.

Connections and control at your fingertips

• Bluetooth 5.0 wireless input with practical range enables easy streaming from phones, tablets, or laptops, up to about 49 feet in open space.
• A 3.5mm AUX input provides a wired option when Bluetooth isn’t ideal, ensuring broad compatibility with a wide range of devices.
• Independent treble and bass controls let you tailor the tonal balance directly on the module, making highs crisper or lows heavier according to taste.

Safety and durability

• Built-in protections guard against over-voltage, under-voltage, over-heat, and short circuits, helping you operate with peace of mind.
• The metal case and clearly printed interfaces support straightforward installation, even for DIY setups in living rooms, bars, or hobby spaces.

Compact size, big potential

With dimensions around 3.74 in by 3.54 in by 0.87 in, the ZK-MT21 fits neatly into tight spaces while preserving room for heat dissipation. It’s well-suited for a home stereo upgrade, a car audio project, a bar area, parties, or an outdoor setup where space matters.

What you may experience

This ARRAROWN module can transform passive speakers into a more expressive system, enable a small subwoofer to deepen the soundtrack, or underpin a dedicated audio corner for music, movies, or streaming. Benefits are described as possibilities; actual results depend on your setup, environment, and content.

Easy setup tips

• Place the board near your speakers and keep the power supply within reach to minimize cable clutter.
• Use the AUX input for a smart TV or computer to avoid potential Bluetooth lip-sync issues.
• Experiment with treble and bass to suit different genres, from crisp highs to tight bass kicks.

Power and compatibility at a glance

Operating on DC 12-24V, with a compact footprint and a practical antenna connection option, the ZK-MT21 is designed for flexible, DIY-friendly home audio projects. It provides a modular path to upgrading your existing gear without overpromising on outcomes.