NEOHIPO#ad - 24 months warranty and lifetime technical support. This bluetooth amplifier board has a bottom plate and a top plate. If you have any questions, please feel free to contact us.
Advanced circuitry design, over-heat protection, Over-voltage protection, supports reverse connection protection, under-voltage protection, and Short-circuit protection. The guard plate is also an indicator, easy to set up.
2 ch stereo output power 50 watts x2, working voltage range DC5-24V, for 4-8Ω, 50watt-200watt passive speakers. Please use a power adapter with sufficient power to connect the amplifier board, otherwise, the sound will be distorted. It is recommended to use a dc15v-24v power adapter with a current above 2A.
Oumefar#ad - Lm386 chip : this 5pcs 200 times gain audio power amplifier module adopts LM386 chip, the working voltage is 5~12V. Professional design : our 5v-12V audio amplifier module has 200 times gain circuit design, and power indicator light. Convenient operation : the LM386 power amplifier board is designed with terminal blocks for convenient wiring of speaker.
Signal input : the main pin of chip can be input audio signal directly, amplifier board has a very good sound quality by using this module. Adjustment volume: the 10K adjustable resistor can be used to adjust volume, easy to use.
HALJIA#ad - Terminals with horns need not be welded, convenient connection. With micro usb power supply interface, or 3. 7v lithium battery can be used, mobile power supply or USB charger can be used through mobile phone data line, USB 5V power supply.
There are different versions of this module, random delivery. Support tf card mobile phone memory card, U disk playback mode.
Module design is convenient for refitting. Super sound quality, on-board 2w mono-channel amplifier 5V power supply up to 3W directly connected to the speaker recommended with 4 3W speaker, 3. 5mm gold-plated headphone socket can be connected to the headphone or external sound.
DollaTek#ad - 18 months warranty and lifetime technical support. If you have any questions, please feel free to contact us. Bluetooth signal distance up to 49ft. This bluetooth amplifier board has a bottom plate and a top plate, Over-heat protection, under-voltage protection, Over-voltage protection, support reverse connection protection, Short-circuit protection.
Two input WaysSupport 3. 5mm wired input and Bluetooth 5.
0 input. Bluetooth signal distance up to 49ft. 2 ch stereo output power 50watt * 2, working voltage range dc5-27v, 50watt-200watt passive speakers. Support 3. 5mm wired input and bluetooth 5.
0 input. It ensures that even with high power operation for a long time, THD is less than 01%. Adopt tpa3116d2with am interference suppression function chip, with excellent sound quality. With volume control and power switch, Ideal for DIY your passive speakers. With volume control and power switch, for 4-8Ω, Ideal for DIY your passive speakers.
DROK#ad - High performance: the digital amplifier module is with high efficiency of over 90%, general harmonic distortion noise is less than 10%, low quiescent current and noise suppression. Besides, imported kemet speaker capacitor, we customized black copper terminal blocks and gold-plated audio input terminal blocks for this new amplifier module.
Parameters: drok audio amplifier board working voltage is dc 5v, output power is 5W 2Ω 5V/3W 4Ω 5V / 1. 8w 8Ω 5v. Safe protection: the class d dual-channel amp board is designed with input reverse connection protection, over heat protection; what's more, short circuit protection, EMI is allowed to pass.
Input method is monaural input. Additional function: it is available to connect amplifier type to choose different function MODE: high electricity level is Type D, low electricity level is Type AB.
Artificial material: this new-designed mini power amplifier is made of noble black immersion gold circuit board, large-capacity filter capacitor for channels. Factory defaults high electricity level; available to add an external Shutdown SD: the chip will be Shutdown at low electricity level, factory default high electricity level.
DollaTek#ad - This amp has three input methods, their input sequence is USB mode/AUX mode/Bluetooth mode. There is no doubt that both can be connected. Zk-502m amp is a mini bluetooth amp smaller than a card, wide voltage input: 5-24V, its peak output power can reach 50W+50W, you can easily buy a matching DC power supply.
This amp protection board is printed with connection icons, allowing you to easily connect to each port without reading the manual.
When you connect passive speakers, this AMP is a Bluetooth power amplifier; when you connect active speakers, this AMP is equivalent to a Bluetooth receiver.
It should be noted that two types of speakers cannot be connected at the same time. You can directly connect to the computer through the usB interface without a driver, and finally, you can also connect to the playback device through the AUX 3. 5mm interface, you can also connect to the mobile phone through the Bluetooth mode.
Fdit#ad - 5build-in noise: build-in noise reduction circuit, supports short circuit, no noise when power on/off, over current and over temperature protection.
3high efficiency 90%: high efficiency 90%, can provide 3W left channel+3W right channel when using 4Ω load and 5V power supply. 1pam8403 mini type: pam8403 mini type d digital power amplifier can be easily put in small space of many digital products, high amplification efficiency.
2usb 5v : it can be powered by computer USB 5V, or phone charger 5V, or lithium battery. 4type d power amplifier: type d power amplifier has very high amplification efficiency, sound quality will not be effected by temperature rise, no need of heat sink.