LOtOO PAW S2 Portable Headphone USB DAC+AMP User Guide
- June 6, 2024
- Lotoo
Table of Contents
LOtOO PAW S2 Portable Headphone USB DAC+AMP

Appearance


Play/Pause Button
Press once: Play/Pause Press twice: Next Song Press three times: Previous Song
Connection

3.5mm and 4.4mm outputs could not be used simultaneously.
Notice: On iOS devices, when using 4.4mm headphones, please keep the
volume of PAW S2 lowerthan 95(high gain) to avoid current overload warning and
disconnection.
Screen Content
Operating

- After connecting USB cable correctly, in default model,+/- buttons are used for volume adjusting
- By pressing Fn button, S2 will switch among 3 modes: Volume/Effect/Gain, In each mode.+/- buttons are used for changing settings
- S2 will show main screen if no operation is performed for a few seconds.
MQA Instructions
If MQA file/stream can be recognized correctly, an MQA logo as well as the decoding/unfolding information will be shown on the screen as below:



Settings in Roon:
Choose [Decoder and Renderer] or [Renderer Only] in [MQA Compatibility]
unfolds to 2X for PAW S2 to further unfold. [Decoder and Renderer] is
recommended.

Firmware update instruction
-
Hold “Fn” key on PAW S2 and connect it to a PC/MAC.
-
Copy the file “PAW-S2.COE” to the root of the new loaded removable disk.



-
Wait till “Successful” shown on the screen of PAW S2.
-
Reconnect the usb cable to use the new firmware.
Specs
| Supported Format: | **** PCM 32K-384 KHz DSD64/DSD128 |
|---|---|
| MQA Supp ort : | 4X |
| Weight: | 29.2g |
| Dim ensions: | 66mm22mml 3mm |
| Max Output: | 3.5mm:125mW/ch @320 4.4mm:150mW/ch @320 |
| HP Port: | 3.5mm Unbalanced 4.4mm Balanced |
| Freq. range: | 3.5mm: 20-20KHz: +0/-0.017dB 4.4mm: 20-20KHz: +0/-0.016dB |
| USB Port: | USB Typ e C |
| Noise Level: | 3.5mm: -12ldBu 4.4mm: -119dBu |
| Screen: | OLED 128×32 |
| THD+N: | Low gain: -ll Od B(0.0003%) High gain: -ll Od B(0.0003%) |
| OS: | LTOS |
| S/N: | 3.5mm: 123dB 4.4mm: 123dB |
| Firmware Upd ate: | Supported |
| Lineout Level: | 3.5mm: 2.34Vrms 4.4mm: 2.55Vrms |
Accessories
| 1. PAW 52 Unit | 2. Clip |
|---|---|
| 3. USB Type C Cable (long) | 4. USB Type C Cable (short ) |
| 5. Quick Guide | 6. Warranty instructi ons |
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Official Site: www.lotoo.cn/english

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