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FiiO M15S Hi-Res Portable Digital Audio Player
Thanks to an audiophile-grade architecture, music lovers can enjoy lossless Hi-Res content on the go with the M15S Hi-Res Portable Digital Audio Player from FiiO. A high-performance ES9038PRO DAC uses four independent D/A converters across two channels in parallel, along with a multi-stage circuit, and 4th-gen FPGA+NDK DAPS for pure sound with minimal interference. This technology powers audio through three headphone outputs, and a heat-dissipation system ensures these components run smoothly. Stream from various apps and services through the Qualcomm 660 chipset and Android 10 OS. All of this is managed conveniently via the large 5.5 HD 720 display and integrated controls.
Desktop & Portable Power Supplies
When you re mobile, the M15S will use the built-in 6200mAh battery for up to 10.5 hours of playback. When connected to power via the included USB cable and adapter, the M15S will switch to a dedicated desktop mode, using a separate higher-voltage power supply. Doing so gives you access to a 5th gain level (enhanced over-ear headphone gain) for undistorted power output up to 1200mW per channel. It s enough power to drive your favorite in-ear monitor or set of headphones. In desktop mode, battery health is preserved with the prevention of charging or discharging. In order to minimize crosstalk and interference, FiiO made sure to keep both power supplies fully separated.
Audiophile-Grade Architecture
Heat Dissipation
With all of these high-powered internal chips and components, FiiO utilizes graphene and a host of other thermal conductivity features to provide efficient heat dissipation to help maintain a stable temperature for consistent audio quality.
QCC5124 Chip with Two-Way Bluetooth
The QCC5124 chip powers full two-way Bluetooth 5.0 support. Transmit music using SBC, AAC, aptX, aptX HD, LDAC, and LHDC codecs, or receive audio in SBC, AAC, aptX, aptX HD, aptX LL, LDAC, and aptX Adaptive codecs.
Six Operating Modes
Precise Volume Control
You have two options for fine-tuned adjustment through 120 levels of volume. Use the built-in buttons or the analog potentiometer knob. The integrated rotary encoder of the knob offers high precision with minimal wear with each turn, and RGB lights indicate different statuses of the M15S. The specific status behaviors, color, and brightness are all customizable.
Additional Features
Thanks to an audiophile-grade architecture, music lovers can enjoy lossless Hi-Res content on the go with the M15S Hi-Res Portable Digital Audio Player from FiiO. A high-performance ES9038PRO DAC uses four independent D/A converters across two channels in parallel, along with a multi-stage circuit, and 4th-gen FPGA+NDK DAPS for pure sound with minimal interference. This technology powers audio through three headphone outputs, and a heat-dissipation system ensures these components run smoothly. Stream from various apps and services through the Qualcomm 660 chipset and Android 10 OS. All of this is managed conveniently via the large 5.5 HD 720 display and integrated controls.
Desktop & Portable Power Supplies
When you re mobile, the M15S will use the built-in 6200mAh battery for up to 10.5 hours of playback. When connected to power via the included USB cable and adapter, the M15S will switch to a dedicated desktop mode, using a separate higher-voltage power supply. Doing so gives you access to a 5th gain level (enhanced over-ear headphone gain) for undistorted power output up to 1200mW per channel. It s enough power to drive your favorite in-ear monitor or set of headphones. In desktop mode, battery health is preserved with the prevention of charging or discharging. In order to minimize crosstalk and interference, FiiO made sure to keep both power supplies fully separated.
Audiophile-Grade Architecture
- High-performance ES9038PRO DAC: the eight independent D/A converters are split between two channels in parallel for rich and highly detailed sound output.
- 4th gen FPGA+NDK Femtosecond Crystal DAPS (Digital Audio Purification System): audio data is passed through this phase-locked loop technology that uses dual NDK femtosecond crystal oscillators, producing highly precise, low jitter, and a purer sound.
- Multi-stage audio circuit: this feature includes IV, LPF, gain adjustment, and amplifier sections. A film resistor is used to ensure accurate signal reproduction and channel balance, while Panasonic low-loss metalized film capacitors are also used to ensure extremely low harmonic and phase distortion.
Heat Dissipation
With all of these high-powered internal chips and components, FiiO utilizes graphene and a host of other thermal conductivity features to provide efficient heat dissipation to help maintain a stable temperature for consistent audio quality.
QCC5124 Chip with Two-Way Bluetooth
The QCC5124 chip powers full two-way Bluetooth 5.0 support. Transmit music using SBC, AAC, aptX, aptX HD, LDAC, and LHDC codecs, or receive audio in SBC, AAC, aptX, aptX HD, aptX LL, LDAC, and aptX Adaptive codecs.
Six Operating Modes
- Pure music mode: exclusive to FiiO, delivering an immersive experience
- Android mode: use third-party apps and streaming music services
- AirPlay mode: wirelessly connect to an iPhone or iPad to deliver a boost to audio quality
- Roon ready: certified to work with Roon systems for high bitrate streaming
- USB DAC mode: use the M15S as a DAC when connected to a PC or phone for improved audio quality
- Bluetooth receiver mode: stream through the M15S for quality wireless sound with support for SBC, AAC, aptX, aptX HD, aptX LL, LDAC, and aptX Adaptive
Precise Volume Control
You have two options for fine-tuned adjustment through 120 levels of volume. Use the built-in buttons or the analog potentiometer knob. The integrated rotary encoder of the knob offers high precision with minimal wear with each turn, and RGB lights indicate different statuses of the M15S. The specific status behaviors, color, and brightness are all customizable.
Additional Features
- Nickel copper shield protects analog portion of the audio circuit and main SoC for a purer signal with less interference from other components
- Four gain levels: low, medium, high, and over-ear headphones
- Hi-res audio and hi-res audio support
- DLNA streaming and transmission support
- Dual-band Wi-Fi
- Support for QC 3.0 and PD fast-charging technologies
- Optimized battery charging mode prevents the battery from being charged to 100% to reduce degradation
- microSD slot supports optional cards up to 2TB
- Firmware update support over microSD
- Tailor your listening with second harmonic adjustment
- FiiO Link support
FiiO M15S Specs
Audio
DAC | 1 x ES9038PRO 32-Bit |
Amplifier | 2 x OPA926 |
External DAC Functionality | Yes, DSD256 up to 384 kHz / 32-Bit |
Audio Resolution | DSD128: 384 kHz / 32-Bit DSD256: 384 kHz / 32-Bit DSD512: 768 kHz / 32-Bit |
Frequency Response | 20 Hz to 20 kHz -0.15 dB (Unbalanced) 20 Hz to 50 kHz -1 dB (Unbalanced) 20 Hz to 20 kHz -0.1 dB (Unbalanced Line Out) 20 Hz to 50 kHz -0.7 dB (Unbalanced Line Out) 20 Hz to 20 kHz -0.1 dB (Balanced Line Out) 20 Hz to 50 kHz -0.7 dB (Balanced Line Out) 20 Hz to 20 kHz -0.15 dB (Balanced Headphone Out) 20 Hz to 50 kHz -1 dB (Balanced Headphone Out) |
Impedance | 8 to 150 Ohms (Unbalanced Headphone Out) 8 to 350 Ohms (Balanced Headphone Out) |
Gain Settings | High1, High2, Normal, Low |
Volume Control | Analog (120 Steps) |
THD + N | 0.00034% at 1 kHz (Unbalanced Line Out) 0.00031% at 1 kHz (Balanced Line Out) 0.00075% at 1 kHz (Balanced Headphone Out) |
Audio Power Output | 535 mW at 16 Ohms (Unbalanced Line Out, High Gain) 580 mW at 32 Ohms (Unbalanced Line Out, High Gain) 93 mW at 300 Ohms (Unbalanced Line Out, High Gain) 475 mW at 16 Ohms (Unbalanced Line Out, High Gain) 395 mW at 32 Ohms (Unbalanced Line Out, High Gain) 57 mW at 300 Ohms (Unbalanced Line Out, High Gain) 531 mW at 16 Ohms (Balanced Headphone Out, High Gain) 1200 mW at 32 Ohms (Balanced Headphone Out, High Gain) 368 mW at 300 Ohms (Balanced Headphone Out, High Gain) 531 mW at 16 Ohms (Balanced Headphone Out, High Gain) 990 mW at 32 Ohms (Balanced Headphone Out, High Gain) 226 mW at 300 Ohms (Balanced Headphone Out, High Gain) |
Maximum Output Voltage | 2.0 Vrms (Unbalanced Line Out) 4.0 Vrms (Balanced Line Out) |
Crosstalk | 80 dB at 4 kHz , High Gain 106 dB at 1 kHz (Line Out) |
Custom Equalizer | Yes |
Performance
Processor | Qualcomm Snapdragon660 |
RAM | 4 GB |
Operating System | Android 10 |
Internal Storage | 64 GB |
Media/Memory Card Slot | Single Slot: microSD/microSDHC/microSDXC [2 TB Maximum] |
Display | 5.5" LCD (1440 x 720 Resolution) |
Operation Method | Physical Buttons, Touchscreen, Volume Wheel |
Mobile App Compatible | Yes *As of March, 2023: Check with manufacturer for the most up-to-date compatibility |
Media Support
Formats Supported | Audio: ISO, DSF, DFF, DXD, APE, AIFF, AAC, SBC, FLAC, WAV, WMA, DTS, MQA, MP3, OGG, and WMA |
Connectivity
Wireless | Bluetooth 5.0 Dual-Band Wi-Fi |
Bluetooth Codecs | AAC, aptX, aptX Adaptive, aptX HD, aptX LL, LDAC, LHDC, SBC |
Inputs/Outputs | 1 x USB-C 3.0 / 3.1/3.2 Gen 1 (Input/Output) 1 x 2.5 mm Balanced Headphone (Output) 1 x 1/8" / 3.5 mm Headphone (Output) 1 x 4.4 mm Balanced Headphone (Output) |
Built-In Mic | No |
Power
Battery | 1 x Built-in Rechargeable Lithium-ion Battery 6200 mAh Providing up to 10.5 Hours per Charge |
Charging Time | 3.5 Hours |
General
Dimensions (W x H x D) | 3.1 x 5.5 x 0.7" / 80.0 x 140.0 x 18.9 mm |
Weight | 12.2 oz / 345 g |
Packaging Info
Package Weight | 2.41 lb |
Box Dimensions (LxWxH) | 9 x 5.3 x 3.2" |
In the Box
- FiiO M15S Hi-Res Portable Digital Audio Player
- Leather Case
- DK3S Heat Dissipation Dock
- PD Charging/Data Cable
- USB Power Cable for DK3S
- USB Adapter
- microSD Card Removal Pin
- 2-Year Manufacturer Warranty
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