QA660 Hi-Fi 24bit/192Khz Digital Audio Player

[treblid]

A follow up of the QA-550 wave player...

QLS now has the QA660: http://qlshifi.com/en/wzcapi/qa660.htm

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")

Looking at the internals, how good/bad is it? Can this I2S interface function work with my killerdac (which isn't a killerdac, but you know what i mean)...

[zenelectro]

Looks great, has some nice features.

The argument for owning one is pretty tough in this day and age with
32bit/384k // dbl speed DSD playback via usb from computer.

Z

[treblid]

Looks great, has some nice features.

The argument for owning one is pretty tough in this day and age with
32bit/384k // dbl speed DSD playback via usb from computer.

Computers are still finicky, but yeah, agree with you...

The I2S out from this thingy should work with the killerdac? Will be something down the road, but I'm thinking of cutting up a network cable, and terminate the end with some headers, and plug it straight in.. Will that just work? Or do I need to do more?

[ozcal]

Hi Treb , was doing some reading re connecting an modern I2S output capable device (DI-DSP  ,with same same pin out as the QLS) to my Satch tda1541a and was told by KingWA of Audio -gd that their I2S output is not comaptible with the TDA1541A i2s INPUT.
This device may solve the problem though : http://www.diyaudio.com/forums/digital-line-level/220407-drive-nos-ad1865-62-pcm1704-02-63-tda1541-fifo-universal-i2s-pcm-driver-board.html
Cheers,
Gordon

[treblid]

Hi Treb , was doing some reading re connecting an modern I2S output capable device (DI-DSP  ,with same same pin out as the QLS) to my Satch tda1541a and was told by KingWA of Audio -gd that their I2S output is not comaptible with the TDA1541A i2s INPUT.
This device may solve the problem though : http://www.diyaudio.com/forums/digital-line-level/220407-drive-nos-ad1865-62-pcm1704-02-63-tda1541-fifo-universal-i2s-pcm-driver-board.html
Cheers,
Gordon

Gee I guess that screws up the plan yet.. Saved me a bit of moolah.. Thanks for the link, gonna do a fair bit of research first...