Experience immersive sound with our Active Noise Cancelling TWS Earphones, featuring ENC dual microphones, gaming/music dual mode, touch control, and Bluetooth 5.2 connectivity. Designed for work, travel, gaming, and daily entertainment, these wireless earbuds combine smart features, comfortable design, and reliable performance for modern lifestyles.
Premium Over-Ear Stereo Headphones combine elegant design, comfortable wearing, and natural sound performance for modern audio users. Featuring African ebony, metal, and PU materials, soft PU earpads, and wide device compatibility, they deliver a premium listening experience for music, entertainment, learning, and daily use. An ideal OEM/ODM audio solution for global brands, retailers, and distributors.
2.0 USB Speaker with RGB Light combines powerful stereo sound, modern design, and colorful lighting effects for gaming, office, and home entertainment. Featuring dual 2-inch drivers, USB plug-and-play connectivity, and a compact ABS housing, it delivers a stylish desktop audio solution. As a China OEM/ODM speaker manufacturer, we provide customized solutions for global brands, retailers, and distributors.
The Mini Suction Cup Wireless Charger combines compact design, wireless convenience, and practical functionality. Featuring 10W fast wireless charging, a stable suction cup structure, and a lightweight ABS + silicone body, it is ideal for home, office, travel, and gift applications. A smart lifestyle accessory designed for retailers, brands, and distributors seeking innovative charging solutions.
Hearing Aid TWS Headphones combine Bluetooth audio, hearing assistance, ANC noise cancellation, and voice calling in one compact design. With Bluetooth 5.1, a portable charging case, and comfortable wearing experience, they are ideal for daily communication, travel, and entertainment. A smart audio solution for retailers and brands seeking innovative wearable products.
Smart Outdoor Inflator Companion combines an air pump, power bank, and outdoor light into one versatile device designed for modern outdoor lifestyles. With a portable design, powerful performance, and multifunctional features, it provides a convenient solution for camping, travel, cycling, and emergency situations. This innovative outdoor electronics product delivers both practicality and market value, making it an ideal choice for retailers, brands, and distributors seeking differentiated smart lifestyle products.
China Manufactured Bicycle Bluetooth Speaker is designed for outdoor enthusiasts with waterproof performance, portable design, and reliable wireless audio. Featuring Bluetooth 5.0, IPX7 waterproof protection, 5W sound output, and rechargeable battery, it is an ideal solution for cycling, travel, camping, and outdoor lifestyle markets.
A China-based OEM/ODM manufacturer established in 2008, specializing in Bluetooth speakers, headphones, sound bars, and smart audio devices. We provide full customization, strong R&D support, and reliable mass production for global brands, retailers, and distributors across Europe, Japan, Korea, and Australia.
OPENEAR HEP-0170 is a lightweight bone conduction headphone designed for sports and daily use. It delivers sound through cheekbone vibration, keeping ears open for comfort and safety. With Bluetooth 5.2, IPX5 water resistance, and 6–7 hours of playtime, it is ideal for running, cycling, commuting, and calls. A perfect OEM/ODM wearable audio solution for global brands.
The Pet Training Companion NSP-0026A is an innovative Bluetooth speaker designed to make outdoor activities with pets more enjoyable and convenient. Combining Bluetooth 5.4 connectivity, voice reminder functionality, hands-free calling, an LED night light, and a leash hook in one compact device, it enhances everyday dog walking, training, camping, and travel experiences. As the global pet economy continues to grow, multifunctional smart accessories that blend entertainment, safety, and practicality are becoming increasingly popular. For brands and retailers, this product offers an excellent opportunity to meet rising consumer demand while expanding into the fast-growing smart pet electronics market.
In static, a power amplifier and b power amplifier connected to pure resistive load, the test will be about the indicators, and even class a larger thermal noise.But the actual application, it is the true load (dynamic load), mini wireless speakers, and the impedance of the different frequency when the mini wireless speaker is different also, at this time of electroacoustic index will be inferior to pure resistive load indicators, transient distortion is produced.Due to the existence of the negative feedback and will feedback to the former level, this kind of distortion is key to the speaker system transient quality type design, uninterrupted by effective damping (control), and the higher the voltage build-up rate of the signal, the distortion more serious.For hifi mini wireless speaker (Such as:NSP-0001), it is important to the quality of the speaker system inertia can by amplifier is effective damping (control).
B damping of the power amplifier can not effectively control the mini wireless speaker, for
any output only one arm and a half weeks at work, or pushing or holding, but it
can't work at the same time, so it's a single direction of damping, namely
whether the positive half cycle or negative half cycle, he only propelled the
mini wireless speaker work motivation, and does not produce control a pull back, to
comprehensive damping,
drive current must promptly reversing, here's the problem.
Input square wave, for example, may work when input signal wave are more
complicated, for instance, when the signal goes up, the mini wireless speaker can go to work
according to the signal waveform, but when the signal suddenly stops, the
mini wireless speaker is due to the effect of inertia of the quality, does not stop, this
time the voice coil is conducting A counter electromotive force generated arm
and as output tube, and in the original globe B arm is conduction, and the counter
electromotive force and inspired by negative feedback back to the top level has
been enlarged to B arm output tube conduction, complete B power amplifier this
special damping, because the process to zero, A moment lost free oscillation
damping.Conduction change as the process finished, B arm, originally A arm of
the conduction is the partial delivery pipe resumed conduction, and experience
A zero damping moment to regain lost damping.So b damping of the power
amplifier at any moment is of single direction, the mini wireless speaker of damping is
accomplished by running a zero phase, having a distortion in almost all the
time.
Class a amplifiers plus or minus two arms are conducting, to the damping
coefficient of both sides, in the sudden high voltage rises, voice coil
according to the waveform to action, the signal stops, the electric potential
by the conduction of the complete pathway B arm, inertia is damping, cannot
produce free oscillation, the potential can establish, class a amplifier the
omnidirectional damping, forcing the vibration of the mini wireless speaker always based on
waveform to vibration signal.Class a amplifier mini wireless speakers whether under the
condition of different signal voltage will not make a transient distortion, can
control the omni-directional damping, drive current commutation in time, so as
to achieve the perfect sound quality.NSP-0004 a crystal mini wireless speaker is a good example of this amp sound
quality pure, high don't distortion bass heavy powerful mix, can put the
perfect sound performance paragraphs audio freely.
