QA-550 WAV digital player user manual
Contents
1. Remote remote receive window serves as receiver of controlling signals from remote Standby it lights when displayer is in standby state stop working shut off output and display and so on SD card stores source of sound files Page l QA 550 WAV digital player user manual Remote user s manual standby reset 2 5 8 2 bit number 0 3 b it number E A key B PREV Pii ba PREV folder play pause 2 D aoi next folder e SE Functions of each key Host standby press this key the host player will enter a standby state Press it again the host will start normal working from standby mode Host reset if press it the host will reset and start working again Number keys 0 9 work together with other keys to select music or something else 2 bit number rapidly set music from the 1 one to the 99 3 bit number rapidly set music from the 100 one to the 999 key A and B useless The previous music choose the previous music same with the previous music key in the host The next music choose the next music same with the next music key in the host The previous folder if there is 1t will turn to the previous folder of the current folder The next folder if there is it will turn to the next folder of the current folder Play pause start playing or stop playing same with the play pause key in the host Use of player Insert the prepared SD card and connect coaxial or opt2. the number is beyond t the sum of files it is considered as invalid and makes no response 4 Press F or F to choose music in folders If press F it turns to the next folder to play And F is invalid when it comes to the last folder If press F it turns to the previous folder to play and it s invalid when it comes to the first folder This way can limit music to repeat playing within a certain folder And the above three methods can only choose the song within the current folder c6 How to firmware update Firstly format 1G 2G SD card in order to update Download update files from our website http www qlshifi com en Download htm and save them on your local hard disk Decompress such files extract the following qls file and save it to the SD card root directory Note that file name can t be amended Plug SD card press on update key SWI and turn on the power supply Then LCD shows update start and the player will automatically find relevant files If you don t insert the card or it fails to find update files LCD will show NO CARD or no file After finish the update LCD shows update ok Thank you for your use If you have any other questions or feedback welcome to contact us Our contact information refers to the following website http www qlshifi com en Ixfs_e htm Page 2
3. QA 550 WAV digital player user manual Welcome to use QA 550 WAV digital player made by QLS Electronics Please spend several minutes to read this user manual before preparing using it QA 550 Player Every aspect of the product is meticulously designed to protect and maintain the pure delicate music signal and ensure the highest possible level of performance 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 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 Main features High accuracy crystal clock 2ppm TCXO crystal to ensure the best sound quality Optical out and coaxial out 2S output interface reserved on the motherboard if you are an enthusiast with a bit manipulative ability you can directly connect DAC of I2S output interface Supporting keys controlling and remote controlling Support firmware upgrade Multi level voltage regulation several Sanyo OS capacitors to ensure more stable work and the least power supply noises Source of sound files 16 bit 44 1KHz WAV files To be directly download from the internet or CD cramping trac
4. ical out to your DAC Power on and switch on the supply power then the player will firstly self test and LCD will display message QA 550 start in lines if SD card format isn t correct it shows QLS Electronics _ http Avww qlshifi com NO CARD if there is no valid source of sound file in SD card 1t shows NO MUSIC And if self test finishes it will show message SUM XXX ready and wait for the next orders When it plays LCD shows file name lines When it stops playing LCD shows message QA 550 STOP in lines If press play pause key the player will end its stop state and replay from the first music When it pauses LCD shows message file name PAUSE in lines And if press the play stop keys again its pause directly ends current number the total file numbers in Choose music 1 If press previous next music it will turn to the previous the next music and automatically play But if it plays the first one previous music key is invalid if the last one next music key invalid if it automatically plays the last one it will turn back to the first one to play 2 If press numbers 1 9 it will directly play the corresponding music It s invalid to press 0 key it s valid if what you press exceeds the sum 3 If press or 2 choose music LCD shows current file name or current filename _ in lines If input music number it will play that music directly If
5. k At most 550 songs can be accessed at the same time It can support 55 first lever folders and Within each folder unlimited number of songs Files are arranged by order SD card format FAT16 or FAT32 format less than equal to 16G SD SDHC Power supply It uses an external linear power supply with less than 200ma working current and smaller standby current It supports direct power supply by 9V or 12V battery QLS Electronics _ http www qlshifi com Product function block diagram FEAR UPDATA KEY STANDBY SD SD CARD p a IF H a S H COAXIAL OUT FEET Be th OPTICAL OUT Functions of each module are as follows Power 8V 12V DC Power supply input Maximum current provided by the power has better exceed or equal 500mA Coaxial out optical out 16Bit 44 1K SPDIF PCM digital output It can directly connect with all kinds of DAC decoder or decoding pre stage amplifier Power switch ON OFF controlling the whole power LCD display displays synchronic information when it plays and upgrades The previous music turns to play the previous music If it is the first one this operation is invalid Stop it stops playing the current music and replays from the first one when pressing the play key Play pause start playing or pause current playing Next music turns to play next music If it is the last one this operation 1s invalid Update key pressing this key can starting updating player firmware
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