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Combo DACs
The combination of the AKM AK4191EQ and AK4499EX DACs completely separates the digital and analog portions, while DWA Routing improves signal-to-noise and ensures natural, Hi-Res Audio reproduction.
Dual THX AAA 78+ Amps
Refining the AAA 78 amps found in the M11 Plus and Pro, FiiO equips the M23 with dual 4-way fully balanced THX AAA 78+ amps. They combine for true, balanced 8-way parallel amplification with greater power output while maintaining high fidelity music.
Digital Audio Purification System
Also known as DAPS, the Digital Audio Purification System is made up of a FiiO-developed Hi-Fi audio core that bypasses the stock Android core, and works with a low-jitter clock coprocessor. In addition to a unified low-jitter clock, this allows the M23 to maintain the original sampling rate of your music, no matter how it’s being played.
4-Stage 20-Rail Power
In order to handle all of this advanced analog and digital internal circuitry, FiiO gave the M23 a robust 4-stage 20-rail power supply. The system is comprised of independent digital and analog power supplies. The analog supply has separate rails for the DAC, small and large amplification parts, four stages of power processing: OVP, adaptive and LDOO voltage stabilization, high-efficiency voltage boosting, and Pi filtering.
A total of 28 high-capacity polymer tantalum capacitors are used to store large amounts of reserve energy when needed, with the primary analog power supply getting 4 KEMET low ESR high ripple suppression polymer tantalum capacitors, the THX power supply getting 12 KEMET capacitors, the I/V & LPF power supplies getting 6 AVX capacitors, and the DAC receiving 6 KEMET capacitors.
Dual-Mode Fast Charging
To help deliver the fastest charging times while maintaining battery health, the M23 can utilize extreme fast charging of up to 30W at a lower battery level, and auto-switch to a slightly slower normal fast charging mode when the battery is closer to being full.
Super High Gain Mode
When in fast charging, the M23’s Super High Gain Mode can be activated for more gain and power to the audio outputs. Up to 1000mW + 1000mW per channel at 32 ohms, or up to 240 mw at 300 ohms, can be accessed for powering high impedance headphones. In addition, while in this mode the second USB-C port does not use power, so it can be repurposed to connect to a smartphone to use the M23 as a USB DAC. A High Gain Mode is also available, offering 475mW at 32 ohms or 55 mW at 300 ohms.
Four Gain Levels
Two low-noise OPA1612 op-amps for I/V and LPF stages, and two low-noise OPA1662 op-amps for voltage amplification come together to ensure audio is accurately played at the correct power output to support a wide variety of headphone and IEM types.
Eight Panasonic Film Capacitors
In the LPF section, 8 Panasonic film capacitors are used to give the M23 the ability to produce stable and consistent sound at each frequency band from both the left and right channels.
Large 5500mAh Battery
Equipped with a sizable 5500mAh battery for mobile use, the M23 is capable of up to 10.5 hours of runtime, or up to 9 hours of balanced battery runtime. A low-resistance MOS protection board is used to enhance overall battery life, and the battery supports fast 30W charging. With that level of charging, the M23 can achieve over 50% power from just 35 minutes of charging, or over 80% power after an hour.
Global PEG & All-to-DSD
A 10-band PEQ can be used in any operating mode to adjust EQ frequency points, gain, bandwidth, and Q value. This lets users fine tune or correct headphone frequency to their personal preferences, and All-to-DSD can be activated to experience audio in different formats.
Six Operating Modes
Enjoy your music the way you want with six different operating modes: Roon Ready, Android, Pure Music, Bluetooth, AirPlay, or over DLNA from a NAS, over a local network, or cloud servers through UPNP, SMB, or WebDav.
Cutting Edge Design
Utilizing the classic hexagonal honeycomb design of other FiiO portable players, the M23 boasts bold edges and 3D cuts in its metal frame, along with an electroplated tempered glass back panel. On the front is a large, 5.5″ HD display with an 18:9 aspect ratio for easily navigating audio sources, viewing album art, and more.
Intelligent Volume Adjustment
Utilizing FiiO’s second generation intelligent volume adjustment, you can dial in your levels by either clicking the physical built-in buttons, or sliding your finger on the textured carbon fiber touchpad.
RGB Lights
Pulsating RGB lights can be customized to your specific needs or used to give a visual indication of which sampling rate is currently being played.
Two-Way Bluetooth
As a Bluetooth transmitter, the M23 supports SBC, AAC, aptX, aptX HD, LHDC, and LDAC codecs, with support for SBC, AAC, and LDAC as a Bluetooth receiver.
Additional Features
- Remote control from your phone via mobile app
- MQA 8x playback for master-grade sound
- Metal-reinforced ports for durability and reliable connections
- Stainless steel battery compartment for improved heat dissipation
- Digital core, DAC, and headphone amp are isolated and shielded from each other to reduce crosstalk and interference
- 3.5mm port for headphones, line, and coaxial output
- 4.4mm port for balanced headphone and line output
- Add more storage with an optional microSD card up to 2TB
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