Digital Bluetooth Amplifier 2x50W

The HIFI amplifier from DFRobot drives two passive speakers with up to 2 × 50 W. Music comes via Bluetooth 5.0 or the AUX input, the volume is set with the knob, which also switches it on and off. It is powered with 5 to 27 V DC. AM interference suppression and filtering keep the distortion at 0.1 % even at high power according to DFRobot.

Recommended Accessories:

• 9V DC 5000mA Power Supply AC/DC Adapter 5.5mm/2.1mm Plug

Features:

• Bluetooth 5.0 and AUX inputs
• Two channels (stereo) for passive speakers 4 to 8 Ω, 30 to 200 W
• Knob for volume and on/off
• Full power only with sufficient voltage, current and input signal: more voltage gives more power, speakers with higher impedance receive less power
• Protection against over- and undervoltage, overtemperature, short circuit and DC at the output
• Bluetooth name BT-WUZHI, reconnects automatically the next time it is switched on
• Acrylic protective panels top and bottom, heat sink included

Application Examples:

• Stereo system with Bluetooth
• Raspberry Pi as music source
• Sound for small rooms and events

Documentation:

• DFRobot product page DFR0803
• Instructables: review of the 502C 2 × 50 W amplifier

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR0803
• Power supply: 5 to 27 V DC
• Inputs: Bluetooth 5.0, AUX
• Output power: up to 2 × 50 W
• Power per channel at 12 V: 12 W into 8 Ω, 20 W into 4 Ω
• Power per channel at 15 V: 18 W into 8 Ω, over 30 W into 4 Ω
• Power per channel at 19 V: 32 W into 8 Ω, over 45 W into 4 Ω
• Power per channel at 24 V: 38 W into 8 Ω, over 55 W into 4 Ω
• Speakers: 4 to 8 Ω, 30 to 200 W
• Bluetooth range: 15 m without obstacles
• Distortion (THD): 0.1 %
• Dimensions: 98 × 50 × 17 mm
• Weight: 115 g

Scope of Delivery:

• 1× Digital Bluetooth amplifier 2x50W
• 2× Acrylic protective panel
• 1× Screwdriver
• 1× Power cable 20 cm
• 1× Knob
• 1× Heat sink
• 1× Accessory bag