M9
The Ultimate in Versatility
Portable High-Resolution Audio Player
*Pictures are for illustration only, actual product may vary
A player that does it all
When developing the M9, we at FiiO saw that there wasn't any one player that combined all of the functions people want. Was there a player that could transmit the HWA/aptX/aptX HD/LDAC lossless Bluetooth codecs, even when used as a USB DAC? What about something that also contained a highly optimized audio circuit for excellent sound quality? Did any players also give the user an experience worthy of a flagship, capable of many features including Wi-Fi music streaming all in a slick interface? We sought to change that with the M9 – which does all of this and more.
The M9 uses Bluetooth 4.2 and supports virtually all Bluetooth formats including the high-resolution ones for your ultimate listening pleasure, including: 24-bit aptX HD (also backwards compatible with aptX), LDAC, and HWA.
Bluetooth audio unleashed with full format support
As a Bluetooth transmitter: LDAC/aptX/aptX HD/SBC (both natively from the player and through USB DAC)
As a Bluetooth receiver: SBC (LDAC to be added with software updates)
The two AK4490EN DACs employed in the M9 feature a high signal-to-noise ratio, exceptional dynamic range, and low distortion – making for a precise yet exciting sound signature.
Dual AK4490EN DACs for superb decoding performance
Built-in dedicated FPGA with DSD128 hardware decoding
Inside the M9 is a high-performance A3P030 FPGA, responsible for ensuring your music (whatever sample rate) is played back accurately by stabilizing digital clock signals. The FPGA also decodes DSD64/128 in hardware, which the M9 supports in ISO/DFF/DSF formats.
Eight-layer HDI PCB ensures excellent sound quality
For the first time, in the M9 FiiO uses an eight-layer HDI (High Density Interconnect) PCB with a thickness of only 0.08mm. While the M9 PCB is more complex than the one in the M7, it also allows more components to be integrated into a smaller space, leading to a smaller PCB and a smaller device overall. Combined with the fact that the M9 PCB is L-shaped, similar to modern smartphones, and you have a recipe for outstanding sound quality.
The TI OPA1612 is used as the LPF, while the TI OPA1622 serves as the current buffer. To achieve single-ended and balanced output, there are two OPA1622 op-amps used that provide up to 77mW* of power under a 300Ω load.
Specially-designed audio circuit with balanced and single-ended outputs
*Under balanced output