[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
mifa A90 Bluetooth Speaker 60W Output Power Bluetooth Speaker with Class D Amplifier Excellent Bass
Aliexpress UK
HiFi Sound with Adjustable High-Pass Filter: This TPA3255 amplifier features an adjustable high-pass filter (HPF) 30-200Hz to refine mid-high frequencies while minimizing low-frequency interference. Perfect for bookshelf or passive speakers, it enhances clarity and creates a dynamic soundstage ideal for home stereo and theater audio systems. Easy Customization with Plug-and-Play Op-Amps: Upgrade your sound effortlessly! Douk Audio A5 includes a tempered glass access panel for quick op-amp replacements, allowing audiophiles to tailor sound profiles without disassembling the unit.
eBay
2pcs Mini Speaker 3W 4R Diameter 4CM Mini Amplifier Loudspeaker Trumpet 3 Watt 4 Ohm 40mm Speakers
Aliexpress UK
Stylish uni-body design, truly ultra-portable, pocket size speaker. Simple turn on speak and plug into 3.5mm audio jack, no Blue tooth pairing, no waiting. Output resistance:4Ω. Clear sound with decent bass, enjoy your music anywhere you go.
eBay
2-way amp amplifier / speaker loudspeaker selector switch box, stereo audio input signal source
Aliexpress UK
With standard stereo RCA audio input, perfectly compatible with many audio devices such as phone,TV, MP3 players, CD players, DAC, computers etc.. With built-in preamplification circuit, can match well with audio source that with low signal output. Adopting classical TPA3116 IC chip in each channel, class D amplification, the max output power can reach 100W+100W(4Ω load), easily to drive all home bookshelf/ computer/ desktop/floor-standing/outdoor passive speakers. Reasonable circuit, concise wiring layout and perfect protection, no sparks no shock. With ultra-low distortion and dynamic balance, the sound is very smooth and natural, powerful in low frequency and delicate in high frequency. The speaker terminals use a staggered design, which provides more space and makes connection easier.
eBay
3.5mm Jack Stereo Mini Speaker Portable MP3 Music Player Speaker Amplifier Loudspeaker for Mobile
Aliexpress UK
Stereo audio amplifier with RCA and AUX input, compatible with many audio devices, giving your entertainment or PA system a boost and offering low distortion & acoustically accurate audio reproduction. Rated 40W+40W output power: support speakers with 4-8 ohm impedance, has a good match with most home & car & boat speakers, can give your entertainment system a boost, with unrivaled sound superiority and lets you enjoy high-quality amplified audio. With treble and bass control (±10dB adjustment range), bring more delicate and high-quality sound. Blue LED light is designed around the volume knob which also serves as a power indicator, looks more dynamic and cool. Mini size with concise and powerful function, besides being used in home desktop audio system, it also can be used in your car, yo.
eBay
3 Inch Speaker Unit Empty Box Shell DIY Sound Amplifier Wood Speaker Case Home Audio HIFI Wooden
Aliexpress UK
With standard stereo RCA audio input, perfectly compatible with many audio devices such as phone,TV, MP3 players, CD players, DAC, computers etc.. With built-in preamplification circuit, can match well with audio source that with low signal output. Adopting classical TPA3116 IC chip in each channel, class D amplification, the max output power can reach 100W+100W(4Ω load), easily to drive all home bookshelf/ computer/ desktop/floor-standing/outdoor passive speakers. Reasonable circuit, concise wiring layout and perfect protection, no sparks no shock. With ultra-low distortion and dynamic balance, the sound is very smooth and natural, powerful in low frequency and delicate in high frequency.
eBay
NEOHIPO ET30 Amplifier Speaker Selector With VU Meter Speaker Switcher with DB Panel Display Audio
Aliexpress UK
3 kinds of input modes: with Bluetooth/AUX/Optical inputs, and equipped with AUX cable, RCA cable and Optical cable, matched well with most audio devices such as phones, tablets, TV, CD players. etc. And Bluetooth 5.0 chip can achieve low latency and up to 50ft transmission. High-performance chip & sufficient output power: Adopt TPA3221 class D audio chip, less than 0.001% distortion; and each channel can max output up to 100W, easily driving many home/desk speakers. Compact design with low heat rejection and safe to use. One knob control all functions: short press the knob can power on/off the amplifier, and long press can switch to Bluetooth/AUX/Optical inputs, rotate the knob can adjust the volume, without any complicated button, very convenient to use. Advanced design and perfect d.
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Portable Mini Speaker Universal 3.5mm Plug in Jack Mini Sound Box Mobile Phone Speaker Amplifier
Aliexpress UK
Power Amplifier Type: HIFI Power Amplifier. The low distortion design ensures a clearer, stronger, and more powerful audio experience. Audio Output: Cable Speaker Jacks + Subwoofer. Wherever you need a great amplifier with low distortion and acoustically accurate music reproduction, this is the perfect choice.
eBay
Portable Mini Speaker Universal 3.5mm Plug in Jack Mini Sound Box Mobile Phone Speaker Amplifier
Aliexpress UK