ReviewsControlled Crystal Oscillators

50pcs 10 Value 32.768KHz-24MHz DIY Quartz Crystal Resonators Oscillator Assorted Kit

HIGH QUALITY: Made of high quality quartz crystal material, very durable and stable to use..
FUNCTION: It provides a stable signal for integrated circuits and it stabilizes the frequencies of radio transmitters and receivers..
EASY TO USE: This set is organized by size in a transparent storage case for quick access and protection..
MEET YOUR DIFFERENT NEEDS: There are 11 Value 32.768KHz-24MHz Oscillators to meet your various needs..
APPLICAITON: Widely used in TV, automobile electronics, pc cards, electronic meter, DVD, MP3, MP4, etc..

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KOOBOOK 1Set 1Hz-50MHz Frequency Counter Meter Crystal Oscillator Digital Tester Meter DIY Kit 5-Digital LED Display

This is a PIC microcontroller based on the frequency meter, with a crystal measurement function and programmable addition and subtraction frequency settings..
Five digital display, easy and intuitive, all use of in-line components, the circuit is simple and easy to produce..
You need to solder and assemble by yourself, all the components are directly inserted, and the wire is printed correctly according to the PCB. After welding, the signal is input with the standard signal source, and the yellow adjustable capacitor is adjusted to make the display value equal to the signal frequency..
The power supply can use a USB to 3.5mm power cable, or you can directly input a 5-9V DC power supply at the - and + pads..
It can measure the frequency range from 1 Hz to 50 megahertz (1Hz-50MHz), can measure the oscillation frequency of most common crystal oscillators, and measure equipment such as radio transceivers..

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4093 Chaos NAND Handheld DIY Kit - Drone Synth

On/off power switch for dive bomb/laser effect.
On/off switches for the two gating oscillators.
CV SAG input powers the entire circuit with control voltage: plug in a sequencer, envelope, LFO, etc (up to 12V).

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xDuoo XD-05 Plus Portable Desktop Headphone Amplifier 32bit/384kHZ DSD256 DAC Headphone Amplifier (Silver XD-05 Plus)

► Portable headphone amplifier: No matter where you are,you can enjoy the high quality music. Support USB/Coaxial/Optical/AUX IN, can be connected various multimedia devicesall digital in..
► Professional high performance chips: Adopts XMOS XU208 and AK4493EQ chips, work in asynchronous transfer mode, support up to 32bit/384kHz and DSD256 signal, present more musical details..
► Easy to drive lots of headphone: 1000mw output power(32ohms load), comparable to desktop headphone amplifier, easy to drive high impedance headphones..
► Powerful battery: Built-in 3.8V5000mah rechargeable li-polymer battery, long playback time. ≥13H( USB IN,≥21H( SPDIF IN,≥40H( AUX IN).
► Adopts two active Low Phase Noise Crystal Oscillators work with CPLD reduced Jitter to undetectable level. Use Dual interchangeable op amp, it could be replaced by yourself..

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FiiO Q1 Portable USB DAC Amplifier

... the BTR5 2021 portable amplifier can decode up to 384kHz sampling rate and native DSD. PS: USB DAC functionality supports 2 modes, driverless USB 1.0 and high-performance USB 2.0 ..
[More points/details]: 3.5+2.5mm dual outputs, cVc 8.0 noise cancellation, in-vehicle mode, OLED display, FiiO Music app, Dual crystal oscillators and USB Audio Adapter mode.....

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HiBy New r6 High-end Portable Audio Player Hi Res Android DAP MQA 16X MSEB 32Ω750mW BO/LO/BAL Output 4500mAh Battery Black

[Smartphone-like smooth experience] an upgraded Snapdragon 660 SoC, 4nm LPP process, class-leading 8-core Kryo 260 architecture, speeds up to 2.2GHz,....
[High Resolution Audio Player] Dual ES9038Q2M+Dual crystal oscillators 45.1584 and 49.152MHz+4 pieces of OPA1612 as the op amp+Headphone amp....
[Android Digital music Player]a lightly customized Android 9 system, the HiBy Android OS bypasses the Android Sampling Rate Conversion at the system....
[MQA 16x unfolding HiFi Lossless MP3 Player] The New HiBy R6 includes MQA technology, which enables you to play back MQA audio files and streams. The....
[MSEB tuning] MageSound Eight Ball is HiBy's internally researched sound tuning algorithm, instead of dividing audio into numbered frequencies, it....

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Fiio E12 DIY Limited Edition Portable AMP HeadPhone Slim Amplifier

... the BTR5 2021 portable amplifier can decode up to 384kHz sampling rate and native DSD. PS: USB DAC functionality supports 2 modes, driverless USB 1.0 and high-performance USB 2.0 ..
[More points/details]: 3.5+2.5mm dual outputs, cVc 8.0 noise cancellation, in-vehicle mode, OLED display, FiiO Music app, Dual crystal oscillators and USB Audio Adapter mode.....

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Xduoo XD-05 Plus Portable Headphone Amplifier Audio DAC Amp XMOS XU208 AK4493EQ USB/Optical/Coaxial DSD256 Decoder Lossless Portable MP3 Music Player (Black)

► Portable headphone amplifier: No matter where you are,you can enjoy the high quality music. Support USB/Coaxial/Optical/AUX IN, can be connected various multimedia devicesall digital in..
► Professional high performance chips: Adopts XMOS XU208 and AK4493EQ chips, work in asynchronous transfer mode, support up to 32bit/384kHz and DSD256 signal, present more musical details..
► Easy to drive lots of headphone: 1000mw output power(32ohms load), comparable to desktop headphone amplifier, easy to drive high impedance headphones..
► Powerful battery: Built-in 3.8V5000mah rechargeable li-polymer battery, long playback time. ≥13H( USB IN,≥21H( SPDIF IN,≥40H( AUX IN).
► Adopts two active Low Phase Noise Crystal Oscillators work with CPLD reduced Jitter to undetectable level. Use Dual interchangeable op amp, it could be replaced by yourself..

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Gustard GUSTARD X18 DAC MQA ES9038 PRO Bluetooth 5.0 XU216 Processor LDAC HD PCM768kHz DSD512 High-Performance Audio Decoder (Black), DAC-X18

ESS9038 PRO chip：ES9038PRO from ESS, with independent power and grounding, provides the best sound..
CPLD Complex Programmable Logic Device ：self-constructed digital integrated circuits with logic functions, clock management, 2nd PLL, digital shaping, DOP decoder, PCM /DSD depop switch and other exclusive technologies have laid a solid foundation for excellent sound quality.
ACCUSILICON Femtosecond crystal oscillator AS318-8：Two AS318-8 Hi-End audio oscillators from Accusilicon, with jitter in fs level..
XU216 from XMOS supports up to PCM768 & DSD512.Support APTX LL, APTX HD and LDAC (up to 24Bit/96KHz). Bluetooth can be disabled in menu..

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DOSYU Smart RGB Table Lamp 16 Colors Adjustable, 6 Brightness, Crystal Lamp for Bedroom Living Room, Bedside Lamp, Nightstand Light with USB-C Charing Touch and Remote Control

...p】 DOSYU crystal lamp is made of high-quality acrylic crystal materials with a fine polished appearance and diamond-shaped surface cutting, with the rose pattern mapped on the floor bringing a very romantic atmosphere..
【Easy to Control Desk Lamp】 this crystal lamp offers two ways of operation, with the remote-controlled conveniently to turn on/off which allows you to control your lamp at a distance, and also can be controlled via touching the top of the lamp..
【Multi-function and Chic Gift】 this crystal lamp can be used as a fine decoration, perfect for the bedroom, dining table, coffee table, living room, kitchen, and anywhere in the home. It is the perfect gift for friends and family on Thanksgiving, Valentine's Day, Christmas, etc..
【Portable Rechargeable Desk Lamp】 this desk lamp is equipped with a battery, it can be used for more than 6 hours after fully charged. Comes with a USB charging wire very convenient to recharge..

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FiiO Q5 Bluetooth aptX and DSD-Capable DAC Amplifier for PC/MobilePhone with Coaxial/Optical/USB/Line/Bluetooth Input

... the BTR5 2021 portable amplifier can decode up to 384kHz sampling rate and native DSD. PS: USB DAC functionality supports 2 modes, driverless USB 1.0 and high-performance USB 2.0 ..
[More points/details]: 3.5+2.5mm dual outputs, cVc 8.0 noise cancellation, in-vehicle mode, OLED display, FiiO Music app, Dual crystal oscillators and USB Audio Adapter mode.....

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