FiiO M23 Portable High Resolution Music Player [b-Stock]

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FiiO M23 Portable High Resolution Music Player [b-Stock]
B-Stock product, (read below) in excellent condition with original packaging, 2 year warranty.
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Description

FiiO M23 Portable High Resolution Music Player

Portable Hi-Res Lossless Android Music player
AKM AK4191EQ+AK4499EX High-End DAC Setup
4-Way Fully-Balanced THX AAA 78+ Amp Section
1000mW Per-Channel Powerful Output
4-Stage 20-Rail Power Supply Architecture
Digital Audio Purification System
Global PEQ Function
Global All to DSD
Qualcomm Snapdragon 660 SoC
28-High-Capacity Polymer Tantalum Capacitors
Dual-mode Fast-Charging
Dedicated Desktop Mode
Dual USB Ports
5500mAh High-Capacity Battery WIth Fast Charging Support(up to 30W)

DAC upgraded from ES9068AS to AKM flagship DAC combination AK4191EQ+AK4499EX. Headphone amplifier upgraded to THX 78+, with a 54% increase in output power at 32Ω and a remarkable 162% increase at 300Ω when the Super Large Ear Mode is activated. Added an independent desktop mode switch, allowing for one-key activation of the desktop mode. Introduced a separate charging and power supply interface. When using POWER IN for charging, the Super Charge Pump can be activated, reaching a maximum charging current of 5.5A. Charging nearly 50% can be achieved in half an hour, 80% in one hour, and a full charge takes only 2 hours, reducing charging time by 43% compared to M11Plus.

AKM Latest Flagship DAC Chipset
At the very heart and core of the latest M23, we have AKM’s latest AK4499EX and AK4191EQ DAC chipset. This 32-bit Velvet tech DAC from AKM Technologies promises an exceptionally solid sound signal decoding ensuring true high-resolution PCM and DSD audio signal decoding with ultra-low distortion and high SNR performance.

High-Power Output
With the help of a fully balanced 4-channel THX AAA 78+ amp section, the FiiO M23 produces a high-power output. It delivers a maximum output of up to 1W per channel when used in Desktop Mode. With such a humongous powerful output, The FiiO M23 can easily drive most IEMs and Headphones with ease.

Dual USB Connection Ports
FiiO M23 is the brand’s first portable Audio player to feature dual independent USB ports. One of these ports is a dedicated power input port which can be used to connect to a power adapter and charge the device or use it in dedicated Desktop Mode. The other port can be used with smartphones and other deevices to be used as a dedicated USB DAC/Amp.

Independent Digital and Analog Power Supply
FiiO has specially developed a 4-stage 20-rail power supply architecture for the M23. This provides a solid foundation for the digital and analog sections on the device and provides them with an independent and isolated current for optimal performance.

FiiO’s Special Digital Audio Purification System(DAPS)
FiiO has developed a Digital Audio Purification System(DAPS) that combines a FiiO-developed HiFI audio core that bypasses the Android system and a low-jitter femtosecond clock processor. Together, the system provides a unified Hi-Res audio performance across different applications on the Android system and promises top-level sonic performance across each application.

High-Capacity Battery WIth Fast Charging Support
FiiO M23 houses a large 5500mAh battery with 30W fast-charging support. The M23 has a solid battery life of up to 10.5 hours in single-ended mode and up to 9 hours in balanced connection mode. It supports 30W fast charging that charges the device up to 80% within 1 hour.

General Specifications
Name/Model	M23	Hardware solution	SoC: Snapdragon 660, DAC: AK4191EQ+AK4499EX, Amp: 4-way THX AAA-78+, charging: AW32271
Working mode	Android/Pure music/USB DAC/Bluetooth Receiving/AirPlay/Roon Ready	Color	Deep blue/Stainless steel
Dimensions	About 75.7x136.5x18.1mm	Dimensions	About 299g (Deep blue)/About 392.3g (Stainless steel)
Display	5.5-inch bezel-less screen (1440*720 resolution ratio)	Volume control way	Slide or button control
RAM	4GB	Internal storage/available space (ROM)	64GB/about 46GB
Memory card	Single microSD card expansion, up to 2TB in theory)	Gain mode	Super High (for fast charge)/High/Medium/Low Gain modes
Channel balance	L20~R20 (0.5dB per level)	Adaptive impedance	PO: 8~150Ω BAL: 8~350Ω
Buttons and Ports
Buttons	Power button1; Multifunction button1;volume touch panel1; Play/Pause1; Previous track1; Next track1	Toggle switch	HOLD1; D.MODE1
Headphone out	3.5 mm	Line output	3.5 mm (shared PO)
BAL headphone out	4.4 mm	BAL line output	4.4 mm (shared BAL)
COAX headphone out	3.5 mm (shared PO, supports up to 384kHz-24bit/DSD128)	USB	Type-C USB3.01 (charging/data transmission)+Type-C POWER IN1 (Charging/Independent power supply)
Characteristics
WiFi	2.4GHz/5GHz, supports multimedia service (DLNA), AirPlay, WiFi song transfer, Roon Ready, etc.	Bluetooth transmission (5.0)	SBC/AAC/aptX/aptX HD/LDAC/LHDC
Bluetooth reception (5.0)	SBC/AAC/LDAC	FIIO Link	Android supports WiFi and Bluetooth control, iOS supports WiFi control
MQA	Supports MQA full decoding	All to DSD	Supported
Double tap to wake up	Supported	In-vehicle mode	Auto on/off following the USB of the vehicle
Max supported sampling rate	Local decoding: up to 384kHz-32bit/DSD256	Power off timers	Supports Sleep/Idle power off
	USB DAC: up to 384kHz-32bit/DSD256	EQ adjustment	10-band dynamic EQ adjustment (±12dB), built in 8 types of preset EQ, self-define EQ, supports PEQ
	USB Audio: 768kHz-32bit/DSD512 (supports DoP/D2P/Native)	System navigation mode	Supports gesture navigation, 2-button navigation and 3-button navigation
Firmware upgrade	Supports upgrade from local storage/memory card/OTA
Power Supply Parameters
Power Supply	Supports QC3.0, QC4.0, PD2.0, PD3.0 PPS fast charge	Battery capacity	5500mAh
Charging time	About 2.5 hours (PD3.0 fast charge mode)	Standby time	＞1000h
Battery life and test conditions
3.5mm headphone out: 10.5 hours
Volume level	52	Gain level	High gain
Display status	OFF	Playing track and format	MP3 44.1kHz/16bit
EQ	OFF	Load	32Ω
4.4mm BAL headphone out: 9 hours
Volume level	41	Gain level	High gain
Display status	OFF	Playing track and format	MP3 44.1kHz/16bit
EQ	OFF	Load	32Ω
Audio Parameters
Parts of performance and parameters of PO (Super High Gain mode)
Output power	L+R≥480mW+480mW (16Ω , THD+N＜1%)	Output impedance	<1Ω
	L+R≥440mW+440mW (32Ω, THD+N＜1%)	THD+N & Noise	≤0.00038% (1kHz/-6dB@32Ω)
	L+R≥60mW+60mW (300Ω, THD+N＜1%)	SNR	≥125dB (A-weighted)
Crosstalk	≥72dB (1kHz@32Ω)	Noise floor	≤1.9μV (A-weighted)
Frequency response	20Hz~20kHz: damping<0.1dB	Peak output voltage	12 Vp-p
Frequency response	20Hz~80kHz: damping<1.1dB
Parts of performance and parameters of PO (High gain)
Output power	L+R≥235mW+235mW (16Ω , THD+N＜1%)	Output impedance	<1Ω
	L+R≥125mW+125mW (32Ω, THD+N＜1%)	THD+N & Noise	≤0.00046% (1kHz/-4.1dB@32Ω)
	L+R≥15mW+15mW (300Ω, THD+N＜1%)	SNR	≥120dB (A-weighted)
Crosstalk	≥71dB (1kHz@32Ω)	Noise floor	≤1.9μV (A-weighted)
Frequency response	20Hz~20kHz: damping<0.1dB	Peak output voltage	6 Vp-p
Frequency response	20Hz~80kHz: damping<1.1dB
Parts of performance and parameters of line-out
THD+N & Noise	≤0.00043% (1kHz/0dB@10kΩ)	SNR	≥126dB (A-weighted)
Crosstalk	≥110dB (1kHz@10kΩ)	Noise floor	≤1.1μV (A-weighted)
Frequency response	20Hz~20kHz: damping<0.1dB	Line output level	2.0Vrms
Frequency response	20Hz~80kHz: damping<1.1dB
Parts of performance and parameters of BAL headphone out (Super High Gain mode)
Output power	L+R≥730mW+730mW (16Ω , THD+N＜1%)	Output impedance	<2Ω
	L+R≥1000mW+1000mW (32Ω, THD+N＜1%)	THD+N & Noise	≤0.00038% (1kHz/-12dB@32Ω)
	L+R≥240mW+240mW (300Ω, THD+N＜1%)	SNR	≥125dB (A-weighted)
Crosstalk	≥117dB (1kHz@32Ω)	Noise floor	≤3.1μV (A-weighted)
Frequency response	20Hz~20kHz: damping<0.1dB	Peak output voltage	23.5 Vp-p
Frequency response	20Hz~80kHz: damping<1.1dB
Parts of performance and parameters of BAL headphone out (High Gain mode)
Output power	L+R≥630mW+630mW (16Ω , THD+N＜1%)	Output impedance	<2Ω
	L+R≥475mW+475mW (32Ω, THD+N＜1%)	THD+N & Noise	≤0.00039% (1kHz/-5.7dB@32Ω)
	L+R≥55mW+55mW (300Ω, THD+N＜1%)	SNR	≥122dB (A-weighted)

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A ´B-Stock´ is a product which has been returned by a customer within their 14/30 Day Money Back Guarantee.
These items are offered at a special, reduced price. Please note, that occasionally the packaging is no longer in pristine condition.
B-Stock products are in full working order and are checked by specialists before releasing them as B-Stock. They come with the full 2 year warranty as any other new product.
Any special comments about a B-Stock product will be noted at the beginning of the article description.

Designer

FiiO logo

About FiiO Electronics Technology Co., Ltd.

01 Brand Introduction - HiFi+Fashion

FiiO Electronics Technology Co., Ltd. was established in 2007. It is a high-tech enterprise that combines research, development, production and sales, and its sales are mainly based on its own FiiO brand as opposed to OEM/ODM. It focuses on digital audio, with current mainstay products being portable headphone amplifiers, DAC / amps and portable digital audio players.

FiiO: It is composed of Fi (Fidelity) from HiFi and iO (represents number 1 and 0) which indicates the sincerer feeling and more convenient life the digital tech has brought to us.

飞傲: The Chinese transliteration of FiiO, as well as representing youthful vigor and the active & innovative spirit of the company.

Audio products are meant to fulfill the spiritual pleasure of users.

FiiO provides products and service related to music.
We also hope to bring happiness to our users with the provided products and service, which is also the key value of FiiO.

Customer Service

Good after-sales service, more reliable
Great user experience, more pleasure
Variety of activities, more involved

About products

Affordable: FiiO products are well-known for its feature of high cost-performance. Lowering the entry level to make more customers can afford.
Easy to use: FiiO pays great attention to the user experience. We are not only provide products with high quality, but also easy to use and with long lasting durability.
More accessories bring more fun: Enable to play in a variety way and use under more possible environments.
Updates available: Equipped with a variety of ports, it makes the music players can still connect to external amp/DAC for upgraded enjoyment.
Endless transformability available: With replaceable amp module and expandable storage, the X7 can bring more playability.

02 Company Profile

Research & Development Team

Twenty years of R&D experience in audio products
Former core R&D team for audio products from OPPO
A team of 20 professional R&D engineers in software, hardware, industrial design, structure and electro-acoustic.

Research & Development Investment

FiiO keeps bringing in advanced equipments and high-tech talents so as to ensure the stable growth and long term competitive edge. Up till now, the team size has expanded three times than that of 2007 when we established.

Team Composition

The R&D team is made up of development dep, engineering dep and QC dep, with 60+engineers in total.

Authorized certifications

FC, CE, KC, CCC and ISO9001:2008 ensure the safety and quality of the products.

Production management

FiiO has strict requirements to production with almost “zero tolerance” even to small problems, which is strictly in compliance with the International Quality Management System ISO9001.

QC Equipment

a. AP audio analyzer (valued at 200,000RMB).
b. Life-span test platform against high & low temperature, swing and plug & unplug trial.
Aging test carriage towards mass production.
Aging test machine under high & low temperature.

Customer oriented

Driven by customers’ needs, we innovate constantly and response promptly to the market changes. We develop new products based on customers’ needs and compete for more market shares.

Company culture - Our Vision

Present the world a better “Made in China”.

Brand Spirit

Innovation

the earliest company that designed the minimum volume headphone amplifier. First dockable amp & DAC product. First amp specially designed for iPod/iPhone. First amp with adjustable power supply and power supplied by mobile phone battery. First multifunctional headphone amp & DAC for Android smarphone. First Hi-Res music player at a price lower than 1000RMB supporting 192K music. First Android-based Hi-res music player.

Quality

Repair Rate < 1%. Sound Quality Control system. Original components imported from TI, Wolfson, Maxim. Company-wide quality control. +20 quality engineers and inspectors. Complete testing facilities.

Service

CEO at the frontline of customer service. 100% response to enquiries. The most popular headphone amplifier brand on Head-Fi. First class website and contents in the audio industry. Interaction with and support to customers on Facebook and Microblog (twitter-like social website).

Brand Mission

FiiO designs, produces and sells high-quality products at favorable prices to those who love music and style.