Key facts
- Manuals
- 1
- Languages
- ZH
- Last added
- 2012-03-12
Featured QA-550 manuals
Qianlongsheng QA-550 WAV Digital Player User Manual
The QA-550 is a Hi‑Fi class WAV digital player that uses an SD card as storage and plays lossless 16‑bit/44.1 kHz WAV files. It offers optical and coaxial digital outputs, an 0802 LCD display, and supports both button and remote control operation. The device includes a temperature‑compensated 2 PPM crystal for high audio quality and a multi‑stage linear regulator for low noise power.
The manual explains how to insert and format an SD card, operate the player and remote, and perform firmware upgrades. Power can be supplied from an 8‑12 V DC source or a 9‑12 V battery, with a typical operating current below 200 mA. Detailed button functions, folder navigation, and upgrade procedures are described step by step. This manual is written in Chinese.
Covers: Key Features · Audio File Format · SD Card Format · Power Requirements · Functional Block Diagram · Remote Control Operation
Latest QA-550 manuals
Qianlongsheng QA-550 WAV Digital Player User Manual
User Manual 2 pages · 199 KB · ZHThe Qianlongsheng QA-550 WAV Digital Player User Manual provides setup, operation, remote control, SD‑card, power, and firmware upgrade instructions.
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in QA-550 manuals
How do I upgrade the firmware?
Format a 1‑2 GB SD card to FAT32, copy the *.qls upgrade file to the card’s root, insert the card, hold the upgrade key while powering on, and the LCD will show “updata start…”. When finished, the LCD shows “updata ok”.
What power source can I use?
The player can be powered from an external linear supply of 8‑12 V DC (current <200 mA) or directly from a 9 V or 12 V battery.