QLS Hi-Fi Digital Audio Player- SOLD OUT

Condition: 9/10 for age. Item is in excellent condition. No scratches or dents. 100% working condition, Factory warranty till NOV 2015, Original accessories complete set

Price: RM1,200(nego)

Contact: Gavin, 012-3266484

QA660 is a Hi-End digital music transport developed for audiophiles with over 3 years development on the software and several major version upgrades on the hardware. This is a true competitor to most of the desktop Hi-End CD players, and able to boost the performance of your whole system with its’ ultra-high-fidelity digital output that ensured by the single threaded software framework, complicated power supply systems and 2 sets of sampling clock circuits.
Our target: “Perfectly and accurately recovery for the music recordings, and deep dark background”.

The single threaded software framework

QA660 implemented the latest version of QLS-HiFi’s unique proprietary technology – the single threaded software framework. This technology ensured ultra-low jitters and high accuracy in playback of digital music, and set the new standards for the digital output of a digital music player at some points.

Why we spent over 3 years of hard work and several dozen thousands of cost in developing this software framework by creating several dozen thousand lines of completely new code from zero? Because we believe the primary task for a digital music player is high-fidelity sound recovery. QA660 is the result of our persistence in pursuit of our belief on HiFi.

The vital aspect of single threaded software framework is running different programs one by one in serial processing mode, and audio program is on the highest priority level. Anytime if the audio playback program calls for reading and decoding audio files on the SD card, the audio playback program overrides all other programs in running for the call right away. Once the audio data length decoded from the audio files reached a set point, this data segment then is sent to the I2S buffer automatically with overriding all other microprocessor commands. The microcomputer system reserves 200%more of the normal audio playback program running time from system for sending the audio data segment to the I2S buffer according to the precise calculation by our engineers. In order to providing enough time resource for audio playback program some other functions such as remote control are kept out from the main microprocessor, and carried by other independent chips. The whole process therefore providing a significant improvement in reducing jitters and streaming music data flow accuracy.

Support up to 24bit/192KHz wav files

The information of a 24bit/192KHz wav file holds is 5 to 8 times to the normal 16bit/44.1KHz CD format, thus the sound quality of 24bit/192KHz wav files is far beyond traditional music CDs regardless of the soundfield, density, dynamic range and resolution.
Features&Specification:

• Streaming music data flow from the SD card to the digital outputs with Ultra-low jitters and high accuracy by the single threaded software framework together with 2 sets of independent sampling clock circuits (44.1K/44K) and mono-system-aspect-design in separated power supply systems and grounding systems.
  
• Audio format supported:
    - WAV         :   16/24bit, 44.1~192 kHz.
    - FLAC       :    16/24bit, 44.1 kHz~48 kHz, compression level 0~8.
    - APE         :    16 bit, 44.1 kHz, compression level fast and normal.
    - WAVPack  : 16 bit, 44.1 kHz, compression level fast mode and high quality.
    - MP3         :    16bit, 44.1/48 kHz, 96k bps~320k bps, CBR/VBR/ABR encoding.
    - CUE         :    ANSI / UNICODE / UTF-8 Encoding.
  
• Digital Output:(outputs can be used at the same time without interfering each other)
    - I2S/IIS
    - Optical
    - EBU/AES
    - RCA Coaxial
    - BNC1 Coaxial
    - BNC2 Current Mode Coaxial(needs a 75Ω ground resistor to convert the current signal to voltage signal so the DAC catches the digital input, some DACs may not have this resistor)
  
• Support SD/SDHC/SDXC up to 128GB SDXC with FAT32 (upgradeable with further firmware upgrade)
  
• OSD supports English, simplified Chinese and traditional Chinese.
  
• Support Software(Firmware) Upgrade.
  
• Output voltage: Coaxial (0.5V p-p), XLR (5V p-p balance)
  
• Digital output formats: PCM / Dolby Digital / DTS
  
• Total hamornic distortion: < 0.00002% @ 20-20k Hz
  
• Dynamic Range: >140dB
  
• S/N ratio (unweighted):>140dB
  
• Power: 9-11W
  
• Input Voltage: AC 110V and AC 220V selectable
  
• Dimensions: 290x240x90mm (11.4" x 9.45" x 3.54") (with all the sockets)
  
• Package weight: 3.6kg
  
• Package Dimension: L440 X W300 X H130mm(17.3" x 11.8" x 5.12")
  
  

Website: http://www.qlshifi.com/en/wzcapi/qa660.htm

Complete box set

Playing view
OSD supports English, simplified Chinese and traditional Chinese.

LED display
Audio format


Rear view
Digital Output:(outputs can be used at the same time without interfering each other)
  - I2S/IIS
  - Optical
  - EBU/AES
  - RCA Coaxial
  - BNC1 Coaxial
  - BNC2 Current Mode Coaxial(needs a 75Ω ground resistor to convert the current signal to voltage signal so the DAC catches the digital input, some DACs may not have this resistor)

USB & SD
Support SD/SDHC/SDXC up to 128GB SDXC with FAT32 (upgradeable with further firmware upgrade)

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Bump once every 7 days please, not 6. Thank you.

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Very accurate, focus & clean sounding machine!

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