[Clear no whistling] equipped with IC / CVC dual technology, through the acoustic expert tuning three tone ratio combined with the principle of frequency shift, greatly reducing the whistling frequency.
eBay
Speaker Spikes Stand Feet Pad Foot For Speakers CD Amplifier 58x22mm 40x20mm Aluminum Alloy Rubber Portable Audio Video 4sets
Aliexpress UK
The Type-C interface allows for stable and convenient connection, with faster and more efficient charging rate. 【Enhanced Wireless Connectivity】: Upgrade to wireless playback and free yourself from tangled cords, allowing for seamless connections with your smart devices such as phones, computers, and tablets.
eBay
TG179 Portable Bluetooth Speakers Support USB TF Card FM Radio Music Soundbar Amplifier Wireless Subwoofer TWS Outdoor Speaker
Aliexpress UK
[Versatile and Practical] Powerful, portable, and super easy to use, this amplifier speaker system is a must-have! Music player and PC speaker are included.Music player has two interfaces, one is for TF card, and another interface is for USB flash drive.
eBay
Bluetooth Speaker TG313 Mini Portable Outdoor Amplifier Waterproof Bass HIFI Loudspeaker Box LED Light support TF Card FM Radio
Aliexpress UK
This heard in hearing aids is designed for old people or people with hearing problems, suitable for those people who was hearing loss or patients. User-oriented design make the hearing aids can perfect the ear.
eBay
Edifier MP230 Tabletop Bluetooth Speaker BT 5.0 Portable Outdoor Speakers with Class-D Amplifier,Support Aux TF Card USB-C Port
Aliexpress UK
Amplify your voice with the NORWII S358 Portable Voice Amplifier. This mini/headphone amplifier is designed with a rechargeable battery, making it convenient to use anywhere. It has one input and is manufactured in China. The amplifier is available in white and black colours and is perfect for use in musical instruments and DJ equipment. With this amplifier, you can boost your voice and make it clearer during your performances. It is an essential item for any musician or DJ who needs to amplify their voice. The NORWII S358 is a reliable and high-quality voice amplifier that will help you perform your best. New open box
eBay
FiiO NEST Clear Earphone Storage Box Waterproof Dustproof Lightweight Portable Mini Wired Earphone Amplifier Protection Box
Aliexpress UK
Connect loudspeaker, laptop microphone's interface directly; The sound recording is clear. 6 Pcs Fuel Speaker Loudspeaker Stadium Horn Trumpet Toy Portable. The item is a compact, lightweight portable headset microphone.
eBay
AIYIMA 2PCS 4 Ohm 10W 3 Inch Speaker Portable Square 77 MM Midrange Bass Subwoofer Sound DIY Amplifier Speakers Loudspeaker Home
Aliexpress UK
Powerful Voice Amplifier: This wireless voice amplifier features a powerful 25W output, ensuring clear and robust sound quality for various settings such as teaching, tours, training, and promotions.
eBay
Khadas Tea USB Portable Headphone Amplifier, Bluetooth Magnetic DAC with 1160mAh Battery, Support DSD 256/PCM 384KHz/Siri Chat
Aliexpress UK
【Handheld Design】:The ergonomic handheld design ensures simple operation, allowing you to quickly your voice or play recordings with ease. We'd like to settle any problem in a friendly manner.
eBay
3.5mm Jack Stereo Mini Speaker Portable MP3 Music Player Speaker Amplifier Loudspeaker for Mobile Phone Tablet PC-Black
Aliexpress UK