Volume Control: This power amplifier board supports subwoofer volume control. L and R channel treble and bass can be controlled independently. Built-in subwoofer low pass filter with crossover control. Stable Performance: This amplifier board with simple and compact layout does not pop and audible noise even at high output power. This stereo amplifier board supports reverse polarity protection, over and under voltage protection, overheating protection, short circuit protection. If you a independent device that you want to have a lot and universal oppression. are available, you can look for models that, in addition to their simple amplification function, also have individual Rules for bass and heights, so Pitch, has. This allows you to hear each piece exactly the way you like it best.

Multiple Inputs: This amplifier board is compatible with cell phones, tablets, computers, CD players, etc. Definition】A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal.ULTRA FLAT, STRONG, FLEXIBLE & TANGLE FREE: Latest ultra thin USB cables with booster (chipset booster) are perfect for laying under carpets, in cable ducts and laying around corners. Ideal for space saving, easy to store and portable. Outer diameter 2,5mm * 8,0mm. Plug and Play, no driver required! Output: The 2.1 channel stereo output power is 50W x 2 and 100W the working voltage range is DC12 to 24V suitable for 4 to 8Ω 50W to 300W passive speakers. Bidirectional HDMI 8K Switch】: The HDMI 8K Switch supports bidirectional conversion, which can be 2-in-1 output or 1-in-2 output (cannot display 2 output monitors at the same time). High safety: This 2.1 channel amplifier board with simple layout has no popping noise and audible noise even at high output power. This stereo amplifier board supports reverse polarity protection, over and under voltage protection, overheating protection, short circuit protection.

UNIVERSAL COMPATIBILITY: The powerful USB 3.0 active extension cable extends the connection between a computer, laptop or tablet and USB 3.0 or USB 2.0 peripherals without data delay or data loss. Widely compatible with Oculus Rift Sensor, PlayStation, Xbox, Camera, Gamepad, Hard Drives, Hubs, Mice, Keyboard, Flash Drive, Printer, SSD and more. Hifi Online works according to a established editorial policy. Therefore, you can be sure that your interests are our top priority. The authors of Hifi Online research independent content to help you with everyday problems and to make purchasing decisions easier. Depending on the model, you can already for good €20 find what you are looking for - then it is mostly internal hardware that you have to install and around amplifier plates. Function】Connect this preamp with 6J1 tubes to the audio source, effectively filter the digital aroma. Tube amps produce a warmer or more natural valve sound, make music, and the human voice is relatively good. Capacitor Filter/Coupling Capacitor】Eight 470UF capacitor filters are very clean, excellent power supply results in no hum, filaments are supplied with DC 12V and need to be connected in series to reduce noise. The coupling capacitor is an electrodeless electrolytic capacitor with high frequency and low resistance .

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Easy Control: This ZK TB21 power amplifier board has subwoofer volume control, L and R channel treble and bass can be controlled independently. Built-in subwoofer low pass filter with crossover control.

Output power: 2.1 channel stereo output power is 50W x 2 and 100W working voltage range is DC12 to 24V suitable for 4 to 8Ω 50W to 300W passive speakers. We make transparent how we can offer you quality content, competitive prices and useful tools by explaining how each comparison was made. This gives you the best possible assessment of the criteria used to compile the comparisons and what you can look out for when reading. Our comparisons were made independently of paid advertising. HDMI Switcher】: The HDMI 8K Switcher, just press the "Select" button to switch the display between two HDMI source devices, switch between entertainment and office, which is convenient for your work and life. For a stable display, try powering the switch.

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The 2.1 audio system consists two regular speakers and one Subwoofer – You can upgrade this again with an amplifier. But not every model can be connected to every sound system. Try to find yourself within a Brand to move.