All-New Yulong Audio U200 Headphone Amplifier with 32Bit/384KHZ DAC: Introduction & Full Review
Jun 8, 2015 at 1:35 PM Thread Starter Post #1 of 2

YoYo JoKeR

100+ Head-Fier
Feb 17, 2013
My fellow Head-Fi comrades, here I have opportunity to present before you, Yulong Audio’s U200 Headphone Amplifier with 32 bit 384 KHZ DAC which has a cutting edge WiFi support technology. The U200 will be successor to the simpler & discontinued U100, but with whole new level of superior performance & features.

U200 Wi-Fi DSD 32bit 384KHz USB Digital to Analogue Decoder (DAC)
Work as a network player when the optional WiFi module is installed. In this configuration, it can:

Play the music files stored in your phone/tablet, and turn it into a high resolution digital player.
Play the music resources stored in Network Attached Storage (NAS) or network media server.
Supports PCM formats up to 32Bit/384KHz and DSD in network player mode.
  1. USB input supports PCM formats up to 32Bit/384KHz and DSD.
  2. Ultra-low phase noise clock.
  3. Flagship DAC chip AKM4495 which was designed with sound impression in mind.
  4. Class-A headphone amplifier.
  5. Integrated AC power supply which ensures effortless, full-sized energy in a small footprint.
  6. USB as the only digital input interface which omitted unnecessary digital inputs, ensures high Cost/Price ratio.
  7. Analogue input enables U200 as a headphone amplifier.
U200 is a high price/performance ratio USB DAC and headphone amplifier which is designed for dedicated high performance audio. It supports PCM formats up to 32Bit/384KHz and DSD.



By integrating a strong AC power supply under its tiny enclosure, U200 provides driving power same as the full sized equipment while maintains portability. When working together with the optional WiFi module, the U200 is turned to a network player with easy operation and exceptional audio quality. In close cooperation and development with SaviAudio, U200 utilizes their high quality SA9227 for its USB audio interface solution. Together with Sophisticated circuit design and customized ultra-low phase noise clock, excellent results are now available through USB transmission.


AKM 4495, the flagship DAC chip of the Premium Audio series from AKM is playing in the core of decoding. It may not have the best measurement performance; Oxygen Free Copper (OFC) lead outs internal hook ups and filters optimized for actual listening experience rather than measurement. Such details distinguish this chip from other solutions, which are mostly optimized for measurement performance, and make it a DAC chip with music sense in its nature. The power supply in U200 is AC internal regulation which is a step up from the external DC supply on its predecessor U100, and provides an optimized distribution for the DAC and the headphone amplifier, and results in a full output scale comparable to full sized system.


The headphone amplifier is fully discrete, class-A construction and paired with a dedicated analogue input, so the U200 can be used as a pure headphone amplifier if desired. AKM4495’s musical nature in mind, U200 is an all-around rich and full, very musical DAC with exceptional driving power in its class, and it can drive most popular dynamic headphones with satisfied result.


WiFi Support: Smart phones and tablets based on iOS or Android platform can install the free app, and then it can play music stored either on the phone/tablet, or NAS and media server. All these applications support up to 32Bit/384KHz and DSD format.
Technical specifications
USB input supports 
PCM 16-32 Bit: 44.1KHz, 48KHz, 88.2KHz, 96KHz, 176.4KHz, 192KHz, 352.8KHz, 384KHz, and DSD64 and DSD128.
USB supports Mac OSX, Linux, and Windows XP to Windows 8, 32 bit or 64 bit system (driver required).
Signal to Noise Ratio: 120dB

Dynamic range: >115dB

Distortion: 0.0016%

Frequency response: -0.2dB @ 20Hz and 20KHz

Crosstalk: -110dB

Maximum line output: 2V RMS
Power consumption: <15W

Headphone output power:
60mW @ 600Ω,
150mW @ 300Ω,
280mW @ 250Ω,
500mW @ 32Ω
Pricing: There are two available versions of U200: the difference just with/without WiFi unit. Colour choice is Black or Silver. These can be picked off
With WiFi Module  @499$   &   Without WiFi Module @399$

Jun 8, 2015 at 1:36 PM Post #2 of 2

YoYo JoKeR

100+ Head-Fier
Feb 17, 2013
Any questions, please do let me know.

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