Bluetooth 5.0 With 4 Channel:Equipped with an advanced 5.0 version of Bluetooth's amplifier, which can effectively improve the transmission speed and quality, greatly reducing the damage to the sound quality when transmitting increase the effective working distance. Of course, the advanced 5.0 version is also compatible with all previous versions.One Herdio amplifier can be connected to four speakers at the same time, and with the advanced Bluetooth 5.0 transmission, you can play sound with better effect in a larger space. Amplifier for a Wide Range of Scenarios :The 4 channel amplifier can drive almost home large passive speakers ensuring wonderful sound quality and is compatible with most sound equipment such as computers, home theatre, CD players, PC, laptops, phone, etc.The Herdio 4 channel amplifier has a TWS function, so when two Herdio amplifiers of the same model are close together, up to eight passive speakers can play music at the same time. Of course, the connect can also be switched off with a button on the amplifier. Volume Control/TWS/Bluetooth Reset:The amplifier has a volume control switch that allows you to adjust the volume to your desired level, and of course, directly on the device you connect the amplifier to. In addition to this, the TWS button on the amplifier toggles the TWS function on and off. When you want to cancel the auto-pairing of Bluetooth, long press the on/off button to forget the automatic connection of Bluetooth, and you will need to connect it manually the next time you use it. Easy Installation:You can mount the amplifier on a wall, on the table or wherever you want, but please don't forget to calculate the distance between the amplifier and the connecting cable! Packing Included/Consultancy Services:1*Herdio 4-Channel Amplifier,1*24V5A AC-DC Power Supply,2*Screw+1*Screwdriver for Mounting Amplifier,1*User Manual.We also provide one year after-sales and lifelong product pre-sales and after-sales consulting, as long as you have any questions about the product, you can send us a message, we will reply to you within 24 hours, if the product malfunctions, in the one-year warranty period we will also provide free after-sales service. Herdio 4-Channel Amplifier Bluetooth 5.0 Amp Receiver 200W Power Output with 24V5A AC-DC Power Supply Wall Mounting,USB/MIC/AUX/TWS. Herdio Bluetooth 5.0 Amplifier With 4 Channel,provides advanced transmission technology that greatly stabilises the connected signal and reduces the loss of sound quality during re-transmission.The upgrade of the Bluetooth version has also increased the effective transmission distance when connected. Up to four speakers can be connected to one Herdio 4-Channel amplifier, and up to eight amplifiers can be connected to two one-smudge Herdio amplifiers, allowing you to play the same sound from eight speakers at the same time when you switch on the TWS function. Packing Included:1*Herdio 4-Channel Amplifier,1*24V5A AC-DC Power Supply,2*Screw+1*Screwdriver for Mounting Amplifier,1*User Manual.