QLS QA-550 SD Card WAV Digital Audio Player

QLS QA-550 SD Card WAV Digital Audio Player

WAV Player is replace your CD player , high accuracy clock and the sophisticated digital output circuit, far superior to most CD player, no matter the speed, stability, error correction, jitter reduction. They are actually the technology of different eras. It provides better sound quality, larger storage capacity .

No matter what the quality of your CD transport / player is, its probably not going to come close to offering the same performance as this compact, futuristic little gadget. Utilising cheap and widely available SD memory cards that can each store up to 16gb of uncompressed WAV files, the CD is a thing of the past.

It effectively isolated the serious interference from within the PC/Mac case. e.g. the high frequency data signals, the switching-mode power supply and the FAN motors, etc…


Reasons why the QA-550 is better than a traditional CD transport...

No moving parts to wear out. Consistant performance every time!
Won't suffer from stability issues caused by dust, dirt or smoke
No reason to take your valueble CDs out of their cases each time you want to listen
WAV files are error corrected so don't need real time error correction unlike CDs
Far less jitter than most CD transports / players, even very pricey ones. Sounds better
Totally resistant to vibrations. No skipping nor any need to keep on expensive Hi-Fi rack
High Accuracy system clock ensures jitter level is miniscule
Whole box sets of your favourite CD music collections can be captured in glorious, uncompressed WAV format onto a tiny SD card no bigger than a postage stamp!
Can be used to play music for extended periods for equipment "burn ins". No mechanical parts such as lasers or motors to wear out
Reasons why the QA-550 is a better music transport than a PC...

Silent (no moving parts)
Powered by dedicated 9v dc linear power supply. Helps reduce jitter
No pops stutters or audio glitches (assuming that WAVs were extracted with love by EAC)
Uses nowhere near the amount of energy that a PC needs
Far more compact than even the smallest laptop PC
Useful remote control functionality
Specifications...

Plays 44.1kHz 16-bit WAV files
Main CPU use PIC 16bit MCU, Firmware upgradeable,Separate use another MCU for remote Receive.
Supports up to 90 folders (up to 900 music tracks)
Support control folders up(+1) or folders down(-1).
Support directly input number for play the corresponding music, You can input 1bit(1-9)or 2bit(10-99) or 3bit(100-550).
Support directly input number for folders.
Remote control allows easy access to folders. It also allows direct track access by directly typing in track numbers.
Supports both FAT16 and FAT32 file system
Supports most types of SD memory cards (SD / SDHC 1Gb-32Gb)

Short signal path
Precision Clock -4 pin high accuracy crystal clock 2ppm 11.2896Mhz TCXO
Low jitter - The use of a low-jitter clock and power driver circuit ensures clean and stable clock signal
Uses high-quality components like Sanyo OS-CON capacitors, AMS1117-3.3, MC7805, 74VHC04, CS8406, ect..
It also can support play 5.1ch(AC-3 or DTS) *.wav file, and output 5.1ch SPDIF PCM signal, But you need have DAC can support 5.1ch.
Power - 9V DC, We offer a Wall Mount DC Power Supply Input: AC 110-120V or 220V-240V, Output: DC 9V 500mA.  (9V or 12V batteries can also be used )
Stylish, strong aluminium chassis
Output Interface(Direct HI-END Digital Output):
Coaxial Output, Connector:TOSLINK ,  
Optical Output, Connector:75 ohms
I2S output pads available on PCB

The back panel is mainly the digital outputs (optical x1, coaxial x1(RCA), ) and the external power supply socket and power on/off switch.
In the front panel, there are the SD Card socket and the standby LED and the REMOTE window and upgrade key.
Size:
Case only  8.1cm x 2.4cm x 13.5cm (width x high x deep)
Incl. sockets.. 8.1cm x 2.5cm x 15.1cm (width x high x deep)
Package 13.2cm x 5.5cm x 23.2cm (width x high x deep)
Weight:
Main unit only 230g
Package 750g  (Include Power supply)