Kitronik Bluetooth Stereo Amplifier Kit

Bluetooth Stereo Amplifier Kit by Kitronik

Change your ideas about amplifier box design with this new Bluetooth amplifier kit and listen to music wirelessly from a phone, tablet or PC. The kit comes with 4ohm 65mm speakers. The speakers come unattached so that cable lengths and cable routing can be adapted to individual case designs.

The power switch is also supplied unmounted, allowing a different power switch to be used.

The 3W Class D amplifier at the heart of this kit not only offers exceptional audio quality, but is also extremely lightweight and does not require the use of a heatsink. This greatly reduces the number of components you need to consider when building your own enclosures.

The user interface consists of an on/off switch. When switched on, the Bluetooth module attempts to reconnect to the last device it was connected to, and if this is not possible, it switches to pairing mode. After evaluating many versions, we found that automating this process provided a much more pleasant user experience.

The Bluetooth Amplifier Kit can be powered by a 1A USB source or a LiPo battery (with JST connector). Both are sold individually. It also has a built-in LiPo battery charging circuit with battery sizes ranging from 400mAh to 1000mAh, making it ideal for people looking for a portable, non-powered solution with automatic battery charging and switching between the power supply and the battery (when the battery is present). At "normal" volume, a 1000mAh LiPo battery can provide up to 28 hours of continuous operation.

The board has an LED and sounds to convey status information such as pairing status. For designs where the USB power supply and LED need to be on separate sides of the case, there is also an optional connection point for an off-board LED.

• As the speakers and power switch are supplied disconnected, soldering is required.
• The speaker wire is included.
• 3W audio amplifier with Bluetooth connectivity (based on a fully CE compliant module).
• Stream music wirelessly from your phone, tablet or PC.
• Simple user interface with a single on/off switch.
• When powered on, it automatically reconnects or switches to pairing mode.
• Status information, such as pairing status, is indicated by LEDs and sounds.
• An optional connection port for an additional outboard LED is available.
• It can be powered by a 1A micro USB power source or a LiPo battery (both available separately).
• Includes automated LiPo battery charging for batteries from 400mAh to 1000mAh capacity.
• Unconnected speakers are available, allowing cable length and routing to be tailored to each enclosure design.

Kitronik Bluetooth Stereo Amplifier Kit: Requirements

• Either a 1A USB power supply or a LiPo battery (with JST connector).
• Soldering iron.
• Solder.
• Wire cutter.
• Wire stripper.