ReviewsAudio Filter Circuit

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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FiiO E10K-TC Headphone Amplifier USB DAC Type-C Black with 3.5mm M/F Shielded Stereo Audio Extension Cable 6 Ft

DAC CHIP: The internal DAC chip is a PCM5102 and can handle PCM files up to 32-bit/384 kHz while improving audio quality via a linear internal filter.
LOW NOISE FLOOR: Down let the dual gain settings fool you: The unit has an optimized low-pass filter and selectable bass boost circuit that are....
AMPLIFICATION STAGE: The E10K-TC features a LMH6643 op amp, which is designed for transient response and driving power..
PORTABLE DESIGN: A brushed aluminum shell and chassis allow for durable portable use..
USB Type-C for the Modern World: To better interface with modern devices, the unit offers a USB Type-C connection.

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4 Channel Car Stereo Amplifier - 4000W High Power 4-Channel Bridgeable Audio Sound Auto Small Speaker Amp Box w/ MOSFET, Crossover, Bass Boost Control, Silver Plated RCA Input Output - Pyle PLA4478

4000 WATT POWER: The Pyle 4 Channel Car Amplifier is perfect for your vehicle's sound system. Gives you up to 4000W bridgeable output. Features switchable bass boost, variable gain control, configurable electronic crossover network.
SILVER-PLATED RCA PORTS: The RCA ports 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 an outstanding music experience. Also features pulse width modulation system.
THERMAL PROTECTION: To keep both your car and the stereo amp safe, this model is equipped w/ thermal, 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: This box amp's small size makes installation a breeze, you'll have no trouble finding a spot for this little yet powerful device. Additional features include LED indicators, RCA output, soft turn-on circuit, glass epoxy PCB and more.

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UNI-T UTD2102CEX+ High-Precision 100MHz Desktop Digital Storage Oscilloscope for Laboratory and Electronic Repair Waveform Tester

..., paper manual, eManual, and 24/7 free support by UNI-T Direct..
Budget friendly and intuitive generator for hobbyists, novices, students, small labs, basic projects, ham radio alignment, pro audio measurements. Learn and update skills, work with audio gear, DC offsets, wow & flutter test, amplitudes, receiver test, circuit test, filter troubleshooting, refurbish turntable..
As a global brand, UNI-T supply all kinds of testing meters and instruments i.e. oscilloscope, electromagnetic pulse generator, rife machine, tone generator, thermal camera, clamp meter, voltage testers..
UNI-T WARRANTY - A trouble-free experience with 100% 18-MONTH WARRANTY and 100% MONEY BACK GUARANTEE by UNI-T Direct!.
Precise & Accurate for education, communication, electrical signal generation, laboratory. Design, test, troubleshoot, and repair of electronic and electroacoustic devices, ie circuit and equipment testing in cellular and wireless systems, broadcasting, television and radio systems.

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Pyle 2 Channel Car Stereo Amplifier - 2000W High Power Dual Channel Bridgeable Audio Sound Auto Small Speaker Amp Box w/ MOSFET Crossover Bass Boost Control Silver Plated RCA Input Output-PLA2378

2000 WATT POWER: The Pyle Dual Channel Car Amplifier is perfect for your vehicle's sound system. Gives you up to 2000W bridgeable output. Features switchable bass boost, variable gain control, configurable electronic crossover network.
SILVER-PLATED RCA PORTS: The RCA ports 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 w/ crisp and clear audio for an outstanding music experience. Also features pulse width modulation system.
THERMAL PROTECTION: To keep both your car and the stereo amp safe, this model is equipped w/ thermal, 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: This box amp's small size makes installation a breeze, you'll have no trouble finding a spot for this little yet powerful device. Additional features include LED indicators, RCA output, soft turn-on circuit, glass epoxy PCB and more.

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FiiO E10K-Type-C USB DAC and Headphone Amplifier Bundle with USB Wall Plug and Cables (4 Items)

...o 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.

Check Stock