ReviewsSmd Crystal Oscillators

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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Moog Subsequent 37 Analog Synthesizer

The OB-6 is a once-in-a-lifetime collaboration between two of the most influential synth designers in history — Dave Smith and Tom Oberheim.
It’s an all-analog, 6-voice poly synth with voltage-controlled oscillators, a state-variable filter, and voltage-controlled amplifiers, inspired by Tom’s original SEM design — the bedrock of his legendary 4-voice and 8-voice synthesizers.
Manufactured and sold by Dave Smith Instruments, the OB-6 features six discrete analog voices with two oscillators (plus sub oscillator) per voice, continuously variable waveshapes with triangle, sawtooth, and variable-width pulse waves, X-mod with 2 sources and 5 destination, a 64-step polyphonic step sequencer, dual digital effects that include faithful recreations of Tom’s acclaimed phase shifter and ring modulator, a full-featured arpeggiator, and a powerful, in-your-face, sonic signatur....
This analog powerhouse is packed into a four-octave, semi-weighted keyboard with velocity and channel aftertouch, making it perfect for stage or studio.

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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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3X Large Ultra Bright LED Page Magnifier with 12 Anti-Glare Dimmable LEDs (Provide More Evenly Lit Viewing Area & Relieve Eye Strain)-Ideal for Reading Small Prints & Low Vision

THE MOST ADVANCED LIGHTING SYSTEM ON MAGNIFIER: This led magnifier is equipped with 12 SMD led lights which are covered by anti-glare reflector, therefore, lighting will be directed to an designated area without glare to your eyes, and provide envely lit viewing area..
LARGE VIEWING AREA WITH CRYSTAL CLEAR LENS: Optical grade magnifying lens covers large viewing area without having your hands to move all the time, lens(viewing area) is measured 4.5"x 7" and magnifies up to 300%..
12 ENERGY EFFICIENT SMD LEDs CONTROLLED BY DIMMABLE SWITCH: Our SMD LEDs are designed to last 100,000+ hours not only provide more evenly lit and brighter viewing area but consume less power than traditional LEDs so a new set of batteris would last twice longer..
LIGHTWEIGHT & ERGONOMIC DESIGN: The unit itself only weights 6 ounces, and the grip of this LED magnifier is ergonomically designed for most hands,therefore, ideal for long reading time..
BRIGHTEST & THE BEST READING MAGNIFIER:The brightness level peaks at 720 lumens, the brightest on the market, these LEDs are designed to last for more than 20 years without burning out or overheating..

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MagniPros 4X Large Ultra Bright LED Page Magnifier with Anti-Glare Lens & Fully Dimmable LEDs(Evenly Lit Viewing Area & Relieve Eye Strain)-Ideal for Reading Small Prints & Low Vision, Seniors

★ THE MOST ADVANCED LIGHTING SYSTEM ON MAGNIFIER: This led magnifier is equipped with 12 SMD led lights which are covered by anti-glare reflector, therefore, lighting will be directed to an designated area without glare to your eyes, and provide evenly lit viewing area..
★ LARGE VIEWING AREA WITH CRYSTAL CLEAR LENS: Optical grade magnifying lens covers large viewing area without having your hands to move all the time, lens(viewing area) is measured 4.5"x 7" and magnifies up to 400%..
★ 12 ENERGY EFFICIENT SMD LEDs CONTROLLED BY DIMMABLE SWITCH: Our SMD LEDs are designed to last 100,000+ hours not only provide more evenly lit and brighter viewing area but consume less power than traditional LEDs so a new set of batteries would last twice longer..
★ LIGHTWEIGHT & ERGONOMIC DESIGN: The unit itself only weights 4 ounces, and the grip of this LED magnifier is ergonomically designed for most hands,therefore, ideal for long reading time..
★BRIGHTEST & THE BEST READING MAGNIFIER:The brightness level peaks at 720 lumens, the brightest on the market, these LEDs are designed to last for more than 20 years without burning out or overheating..

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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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Gustard R26 Discrete R2R Decoder MQA Native DSD DAC with Streamer/Renderer PCM768K DSD512 XU216 K2 IIS Decoder(Silver)

CPLD: Complex Programmable Logic Device：Signal routing.
Clock synthesization: Replace the input signal' s clock with precision oscillators (local or external). Interference from the input source' s clock is avoided. Function off: IIs, AES, COAX, OPT, BT.
PCM NOS, 1 Bit Function on: USB & LAN K2, ultra-low noise clock synthesizer: provides precision clock from local oscillators or external clock in..
LPF is specifically designed for the D/A converter using discrete devices. Final parameters of the circuit are adjusted with subjective listening. Different from IC s, discrete circuits provide the possibilities to control every detail in sound and performance. But the parasitic effects introduced huge challenges to development experience and device' s quality..

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