Connect the audio interface of the old-fashioned stereo or amplifier to solve the problem that the speaker/amplifier has no Bluetooth and cannot use Bluetooth to play. Support U disk playback, plug and play, no driver required.
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NFC Bluetooth 5.4 Audio Receiver 3.5mm AUX RCA TF 6.5MM Microphone Karaoke Wireless Adapter USB U-Disk Play Remote Control
Aliexpress UK
Advanced Bluetooth Technology : Equipped with Bluetooth 5.3, this adapter ensures faster data transmission, lower latency, and enhanced connectivity over longer distances compared to previous versions.
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NFC Bluetooth 5.5 Audio Receiver 3.5mm AUX RCA USB U-Disk Stereo Music Wireless Adapter For Car Kit Speaker Amplifier With Mic
Aliexpress UK
Bluetooth V2.0 + EDR. Transfer Rate: 3Mbit / s (EDR), transmission speed more quickly. Support EDR security mode. 10 x Mini Bluetooth USB Dongle. Bluetooth specification V 2.0 & V 1.2 Compliant. Support VOIP voice calls seamlessly connect Skype software.
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Bluetooth 5.4 Audio Receiver RCA 3.5mm AUX USB Wireless Adapter With MIC Support U-Disk Play For Car Kit Speaker Amplifier
Aliexpress UK
1 x Bluetooth Adapter. Support application functions: HFP/HSP (hands-free phone/headphone) A2DP/AVRCP (stereo music) HID/HOGP (keyboard mouse). Interface: USB 2.0;. Support software: compatible for Microsoft Bluetooth-compatible software, CSR Har mony, Bluez, Bluesol;.
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XIKCU Bluetooth 5.3 Audio Receiver 3.5mm AUX R/L RCA Stereo Lossless HIFI Music Wireless Adapter USB U-Disk Play Remote Control
Aliexpress UK
Bluetooth V2.0 + EDR. Transfer Rate: 3Mbit / s (EDR), transmission speed more quickly. Support EDR security mode. 1 x Mini Bluetooth USB Dongle. Bluetooth specification V 2.0 & V 1.2 Compliant. Support VOIP voice calls seamlessly connect Skype software.
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Bluetooth 6.0 Audio Receiver U Disk RCA 3.5mm AUX USB Stereo Music Wireless Adapter With Mic For Car Kit Speaker Amplifier
Aliexpress UK
1 Receiver. Interface type: USB. All pictures are for illustration purpose only and Colours may vary slightly. Import Duties.
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Biurlink RCA USB 5V-12V Bluetooth Audio Adapter Microphone Handsfree For BMW for Audi for Honda for Toyota for Nissan
Aliexpress UK
Usb 5.0 Bluetooth dual mode dongle, compatible with Bluetooth 2.1, 3.0, 4.0, 4.1 and 4.2 specifications. Integrated low-power MCU, RF transceiver, baseband, modem, USB, UART, PCM/I2S, SARADC and 24 GPIOs with the Barry Bluelett protocol stack to provide low-cost, low-power, flexible and powerful Bluetooth application.
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NFC Bluetooth 5.3 Audio Receiver 3.5mm AUX R/L RCA Stereo Lossless HIFI Music Wireless Adapter USB U-Disk Play Remote Control
Aliexpress UK
Bluetooth Version: Bluetooth 5.4 (+BLE low power consumption, low latency). 5.4 Bluetooth, dual-mode dual-channel, compatible with Bluetooth 2.0, 3.0, 4.0, 5.0, 5.1, 5.3 specifications. 1 x Bluetooth 5.4 USB Adapter.
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RGB Bluetooth 5.3 Audio Transmitter Receiver DAC/AUX/RCA/USB/Coaxial/Optical/6.5MM Microphone Karaoke Hifi DSP Wireless Adapter
Aliexpress UK