Top Audio Filter Circuit

Class AB Amplifier, DROK 2.1 Channel 80W+80W Stereo and120W Pure Bass 9-18V 4Ω Audio Amplifier Board

  • Parameter --- Working Voltage: DC 9-18V, Output Power: Max 2x80W Stereo(18V/4Ω), 1x120W Pure Bass(18V/2Ω), 2.1 Channels Recommended 2/4/6/8Ω Speakers, Can be Powered by 9V 12V..
  • 3.5mm/3P Input --- This Amplifier Board Support Two Types of Input: 3.5mm Audio Input or 3P_2.54mm Terminal Input..
  • Feature --- Eliminate Background Noise and Bring Better Sound Effect. Four 3300UF Professional Audio Filter Capacitors.
  • Protection --- Input Anti Reverse-Connect Protection, Output Short Circuit Protection, Over Current Protection(OCP), Over Temperature Protection (OTP)..
  • Warranty Guarantee --- 1 Year Long-Term Warranty Guarantee Since Purchased the Product..
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2 Channel Car Stereo Amplifier - 5000W High Power 2-Channel Bridgeable Audio Sound Auto Small Speaker Amp Box w/MOSFET, Crossover, Bass Boost Control, Silver Plated RCA Input Output - Pyramid PB3818

  • 5000 WATT POWER: The Pyramid 2 Channel Car Amplifier is perfect for your vehicle's sound system. It gives you up to 5000W bridgeable output. Features variable bass boost, variable gain control, and fully adjustable electronic crossovers.
  • SILVER-PLATED RCA PORTS: The car audio amplifier features RCA ports that are silver-plated for eliminating signal loss. The subsonic filter allows low-end interference to be cut so your speakers will always deliver the highest quality audio.
  • MOSFET PULSE: The MOSFET pulse width modulation power supply allows for a clean distortion-free signal to your compact speakers providing you with crisp and clear audio for outstanding music experience. Also features pulse width modulation system.
  • FULLY PROTECTED CIRCUITRY: To keep both your car and the stereo amp safe, this model is equipped w/ overload and short circuit protection. Has been specially designed from the bottom up to provide safe and high-quality sound in a sturdy form factor.
  • SLIM SIZE DESIGN: The car amp's small size makes installation a breeze, easy finding a spot for this little yet powerful device. Additional features include remote turn on, soft turn on/off the circuit, heavy-duty aluminum alloy heat sink & LED indicator.
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2 Channel Car Stereo Amplifier - 2000W High Power 2-Channel Bridgeable Audio Sound Auto Small Speaker Amp Box w/ MOSFET, Crossover, Bass Boost Control, Silver Plated RCA Input Output - Pyramid PB918

  • ...peakers will always deliver the highest quality audio.
  • MOSFET PULSE: The MOSFET pulse width modulation power supply allows for a clean distortion-free signal to your compact speakers providing you with crisp and clear audio for outstanding music experience. Also features pulse width modulation system.
  • FULLY PROTECTED CIRCUITRY: To keep both your car and the stereo amp safe, this model is equipped w/ overload and short circuit protection. Has been specially designed from the bottom up to provide safe and high-quality sound in a sturdy form factor.
  • SLIM SIZE DESIGN: The car amp's small size makes installation a breeze, easy finding a spot for this little yet powerful device. Additional features include remote turn on, soft turn on/off the circuit, heavy-duty aluminum alloy heat sink & LED indicator.
  • Included Components: 1 Pyramid Branded Product.
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GOgroove Phono Preamp Pro Preamplifier with RCA Input/Output, DIN Connection, RIAA Equalization, 12V DC Adapter - Compatible with Vinyl Record Players, Turntables, Stereos, DJ Mixers

  • COMPACT DESIGN fits on your bookshelf, desk, table so you can connect your turntable to your stereo receiver, speakers, or other audio device in any spot | LIGHT INDICATORS FOR SIGNAL AND SIGNAL CLIP.
  • IMPROVED, HIGH-END CIRCUIT now converts turntables phono sound quality to line level for less distortion with better sounding audio and volume.
  • RCA & DIN CONNECTION hooks up to record players for smooth audio with vintage records | PLUG IN YOUR HEADPHONES to the 1/4 connector to the headphone port (use the monitor level knob to adjust volume).
  • EASY TO SET UP OUT OF THE BOX for a simple hook up the preamp to both turntable and audio device so you can enjoy vinyl in no time | SWITCH OFF THE POWER BUTTON when the pre amp is not in use.
  • RIAA EQUALIZATION boosts the volume signal for balanced, clear audio | FILTER BUTTON rolls off the low end and helps eliminates rumble | BACKED BY 3 YEAR MANUFACTURER'S WARRANTY.
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ACEIRMC 2pcs 130W 2-Way Speaker System Audio Crossover Filters Frequency Distributor

  • Circuit Filter Characteristics: Bass 12 dB/oct, Treble 12 dB/oct.
  • Product Name: Crossover Filters Frequency Divider.
  • 130W 2-Way Speaker System Audio Crossover Filters Frequency Distributor.
  • Dimension: 8.5 x 6 x 2cm/ 3.3 x 2.4 x 0.8 inches(L*W*H).
  • Package Content: 2 x Crossover Filters Frequency Divider.
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U-Turn Audio – Pluto 2 Phono Preamp (Black Aluminum)

  • Low-noise phono preamp for all MM (moving magnet) cartridges..
  • Designed and assembled in Woburn, MA. Comes with a 3-year warranty and lifetime product support from U-Turn Audio..
  • Combines elegant circuit design and high-quality components like WIMA film capacitors and precision resistors for remarkably clear and accurate amplification..
  • Active subsonic filter removes low-frequency noise. Dual high-performance gain stages for low THD (distortion)..
  • Compact aluminum enclosure shields sensitive electronic components from interference..
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U-Turn Audio – Pluto 2 Phono Preamp (Natural Aluminum)

  • Low-noise phono preamp for all MM (moving magnet) cartridges..
  • Designed and assembled in Woburn, MA. Comes with a 3-year warranty and lifetime product support from U-Turn Audio..
  • Combines elegant circuit design and high-quality components like WIMA film capacitors and precision resistors for remarkably clear and accurate amplification..
  • Active subsonic filter removes low-frequency noise. Dual high-performance gain stages for low THD (distortion)..
  • Compact aluminum enclosure shields sensitive electronic components from interference..
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FiiO Headphone Amps Portable DAC USB Type-C coaxial 384kHz/32bit (E10K-TC black)

  • Easy to Operate Design: The refined E10K-TC is tiny enough to carry with you wherever you go but is also right at home on your desk to make your music sound great anywhere, the small yet easy-to-operate design makes it a perfect companion for listening.
  • Impeccable XMOS Decoding: The E10K-TC comes with the flagship XMOS XUF208 for better USB decoding. Compared to the original E10K, the USB Audio class has been upgraded to 2.0, and PCM is now supported up to 32 bit/384kHz sampling rates to better capture the details in your music.
  • Quality Chips to Delight your Ears: The DAC is the PCM5102, with improvements to the flatness and delays of the internal digital filter meaning better sound quality and less audio delay. A high current amp circuit ensures good output power with great transient response.
  • 2 Gain Levels and BASS Boost: The E10K-TC comes with high/low gain adjustment as well as a bass boost. High gain is for higher impedance headphones that may need the extra volume, while the bass boost satisfies different listener's preferences when listening to various types of music.
  • Low Noise Floor: Optimized active low pass and BASS circuit design ensure low noise floor in any situation, so your music is truly played back faithfully.
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FiiO Headphone Amps Portable DAC USB Type-C coaxial 384kHz/32bit (E10K-TC Black)

  • Easy to Operate Design: The refined E10K-TC is tiny enough to carry with you wherever you go but is also right at home on your desk to make your music sound great anywhere, the small yet easy-to-operate design makes it a perfect companion for listening.
  • Impeccable XMOS Decoding: The E10K-TC comes with the flagship XMOS XUF208 for better USB decoding. Compared to the original E10K, the USB Audio class has been upgraded to 2.0, and PCM is now supported up to 32 bit/384kHz sampling rates to better capture the details in your music.
  • Quality Chips to Delight your Ears: The DAC is the PCM5102, with improvements to the flatness and delays of the internal digital filter meaning better sound quality and less audio delay. A high current amp circuit ensures good output power with great transient response.
  • 2 Gain Levels and BASS Boost: The E10K-TC comes with high/low gain adjustment as well as a bass boost. High gain is for higher impedance headphones that may need the extra volume, while the bass boost satisfies different listener's preferences when listening to various types of music.
  • Low Noise Floor: Optimized active low pass and BASS circuit design ensure low noise floor in any situation, so your music is truly played back faithfully.
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Audio Amplifier Board, DROK 5W+5W Mini Amplifier Board PAM8406 DC 5V Digital Stereo Power Amp 2.0 Dual Channel Class D Amplify Module for Speaker Sound System DIY

  • Parameters: DROK audio amplifier board working voltage is DC 5V, output power is 5W (2Ω 5V)/3W (4Ω 5V) / 1.8W (8Ω 5V). Input method is monaural input..
  • Artificial Material: this New-designed mini power amplifier is made of noble black immersion gold circuit board, imported KEMET speaker capacitor, large-capacity filter capacitor for channels. Besides, we customized black copper terminal blocks and gold-plated audio input terminal blocks for this new amplifier module..
  • High Performance: the digital amplifier module is with high efficiency of over 90%, general harmonic distortion noise is less than 10%, low quiescent current and noise suppression..
  • Safe Protection: the class D dual-channel amp board is designed with input reverse connection protection, short circuit protection, over heat protection.
  • Additional Function: it is available to connect amplifier type to choose different function (MODE: high electricity level is Type D, low electricity level is Type AB. Factory defaults high electricity level).
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CW QRP Shortwave Radio Kit - CW Transceiver Shortwave Radio Kit

  • The patch device of the main control board has been pre welded and connected to the base plate in the form of stamp hole. The single chip microcomputer adopts pic16f1938, builtin PLL local oscillator, supports crystal oscillator calibration setting, and has its own frequency indication circuit (Seven Segment LED nixie tube is used, the display unit is 1kHz, the photo has color difference, and the actual color is red. The working frequency covers 7.000-7.100mhz, 1kHz or 100Hz steps )..
  • Ta2003 mixer is used for reception, and crystal filter is used for if. After ta2003 multiplication detection, the sound size is adjusted by digital potentiometer and sent to audio active filter circuit. Finally, LM386 drives speaker, and if frequency supports calibration setting..
  • Use 3 bs170 parallel outputs, class E amplification, 12V power supply, output power 5W! Relay switching is used for transceiver, with the function of transmitting delay adjustment to avoid frequent relay switching and improve the isolation of transceiver channel..
  • It has the function of automatically sending call signs, which is very convenient to use. The MCU uses the original code of our store, which can adjust the code speed, sidetone frequency and sidetone size. It can input the call sign by ....
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SAYGOHY Two Channels 48V Phantom Power Supply 2 Ways Condenser Microphone 48 V for Behringer C-3 C-1 C 1 3 C1 C3 Recording Mic, Black

  • 1.Use the isolated voltage-boosting technology to effectively prevent the ground signal interference..
  • 2.Use the built-in low-pass filter circuit design to fully filter out the interference noise from the external audio equipment..
  • 3.Use soft-start function to avoid the impulsive sound of"puff" when booting the device..
  • 4.Use two sets of balanced power supply,to balance the input and output signals,makes the voltage be balanced and stable,and inhibit common mode interference..
  • With 2-pin AC Adapter(110v~240v, 50~60Hz, Works Worldwide).
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