| Name/Model | M15S |
| Hardware | Soc: Snapdragon 660, DAC: ES9038PRO, Amplifier: OPA926 * 2, Crystal Oscillator: NDK Femtosecond Crystal Oscillator * 2 |
| working mode | Android mode/Pure music mode/USB DAC mode/Bluetooth receiving mode/AirPlay mode /Roon Ready |
| Weight | about 345g |
| color | Black |
| Volume Control Type | button control or knob control |
| Size | about 140x80x18.9mm |
| Body Memory/User Free Space (ROM) | 64GB/About 46GB |
| screen | 5.5-Inch full-fit screen (resolution 1440 * 720) |
| Gain | Ultra high (Quick charge)/Super high/high/medium/low |
| RAM | 4GB |
| Recommended headphone impedance | 8 ~ 150Ω (single-ended output)/8 ~ 350Ω (balanced output) |
| Storage expansion | Single TF card slot, up to 2TB (theoretically) |
| Channel balance | L20~ R20 (0.5dB per level) |
| Button | Physical key |
| USB | TYPE C USB3.0 (charging/data transmission) |
| Headphone output | 3.5mm single-ended |
| Line output port | 3.5 mm (shared with PO port) |
| Balanced output | 2.5mm + 4.4mm balanced |
| Balanced line output interface | 2.5mm balance + 4.4mm balance (shared with PO ports) |
| coaxial interface | 3.5 mm (shared with PO port, up to 384kHz-32bit/DSD128) |
| WiFi | 2.4GHz/5GHz, supports DLNA transmission and reception, AirPlay, WiFi transmission, Roon Ready, etc. |
| Bluetooth Transmitter (5.0) | SBC, AAC, aptX, aptX HD, LDAC, LHDC |
| Bluetooth reception (5.0) | SBC, AAC, aptX, aptX HD, aptX LL, LDAC, aptX Adaptive |
| FiiO Link | Android support WiFi and Bluetooth control, iOS support WIFI control |
| MQA | Global 8x decoding |
| All to DSD | support |
| Double click to wakeup | support |
| USB Audio | 768kHz-32bit/DSD512 (DoP/D2P/Native) |
| Power-off timer | Support power saving shutdown/sleep shutdown |
