Comparison MP3 Players

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	FiiO M21	FiiO M15S	Sony NW-ZX707	Sony NW-WM1A	Sony NW-WM1ZM2
	from $369.99 Compare prices 5	from $1,099.99 up to $2,539.99 Compare prices 3	from $698.00 up to $899.99 Compare prices 4	from $1,398.00 Compare prices 4	from $2,598.00 up to $3,698.00 Compare prices 2
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TOP sellers	Amazon.com $370.00 Buy in shop Reverb.com $370.00 Buy in shop Amazon.com $370.00 Buy in shop	Amazon.com $1,100.00 Buy in shop Reverb.com $1,100.00 Buy in shop Newegg.com $2,540.00 Buy in shop	Amazon.com $898.00 Buy in shop WorldWideStereo.com $698.00 Buy in shop BestBuy.com $898.00 Buy in shop	Amazon.com $1,398.00 Buy in shop WorldWideStereo.com $1,398.00 Buy in shop BestBuy.com $1,398.00 Buy in shop	bloomingdales.com $2,598.00 Buy in shop Newegg.com $3,698.00 Buy in shop
Type	Hi-fi player	Hi-fi player	Hi-fi player	Hi-fi player	Hi-fi player
ОС	Android	Android	Android		Android
Built-in memory	64 GB	64 GB	64 GB	128 GB	256 GB
Memory card type	microSD	microSD	microSD	microSD	microSD
Max. memory card size	2000 GB	2048 GB
Specs
DAC	CS43198 (4 pcs)
Sampling frequency	768 kHz	768 kHz	384 kHz		384 kHz
Bit depth	32 bit	32 bit	32 bit		32 bit
Frequency range	20 – 85000 Hz		20 – 40000 Hz		20 – 40000 Hz
Signal to noise ratio	126 dB	122 dB
Power	950 mW	1200 mW	1100 mW
Headphone impedance	8 – 350 Ohm	8 – 350 Ohm
Harmonic distortion coefficient	0.0005 %	0.0005 %
Features
Audio formats support	MQA, ISO, DSF, DFF, DST, DXD, APE, ALAC, AIFF, FLAC, WAV, WMA, MP3, OGG, WMA, AAC	MQA, ISO, DSF, DFF, DST, DXD, APE, ALAC, AIFF, FLAC, WAV, WMA, MP3, OGG, WMA, AAC	AAC, AIFF, ALAC, DSD, HE-AAC, PCM, MP3, WMA, FLAC	AAC, AIFF, ALAC, DSD, HE-AAC, PCM, MP3, WMA, FLAC	AAC, AIFF, ALAC, DSD, HE-AAC, PCM, MP3, WMA, FLAC
Codec support	aptX HD AAC LDAC	aptX Adaptive AAC LDAC	AAC LDAC		AAC LDAC
Features	DAC mode operation equalizer	DAC mode operation equalizer	DAC mode operation equalizer	equalizer	equalizer
Connection
Wi-Fi
Bluetooth	+	v5.0	+	+	v5.0
Outputs	mini-Jack (3.5 mm) Pentaconn (4.4mm) coaxial	micro-Jack (2.5mm) mini-Jack (3.5 mm) Pentaconn (4.4mm)	mini-Jack (3.5 mm) Pentaconn (4.4mm)	mini-Jack (3.5 mm)	mini-Jack (3.5 mm) Pentaconn (4.4mm)
Screen
Screen	colour 4.7 " 1334x750 px touch screen	colour 5.5 " 720x1440 px IPS touch screen	colour 1280x720 px TFT touch screen	colour 4 " 854x480 px TFT touch screen	colour 5 " 1280x720 px TFT touch screen
General
Battery capacity		6200 mAh
Operating time (audio)	15 h	10.5 h	25 h	33 h	40 h
Charging time		3.5 h		4 h	4.5 h
Fast charge	QuickCharge 4.0, PD	Quick Charge 4.0
Charging connector	USB-C	USB-C	USB-C	USB-C	USB-C
Firmware update
Touch control
Material	metal	metal	metal	metal	metal
Size (HxWxT)	121x68x17 mm	140x80x18.9 mm	132x72x17 mm	124.2x72.9x19.9 mm	142x80x21 mm
Weight	193 g	345 g	227 g	267 g	490 g
Color
Added to E-Catalog	july 2025	october 2023	march 2026	september 2016	september 2024