Specification

General Specifications
Model
SR25
Body Color
Aqua Mint
Body Material
Aluminum
Display
3.6inch WVGA (720 x 1,280) TFT LCD
Supported Audio Formats
WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA
MQA playback
Services(Tidal Masters), Local files, External USB, MQA-CD(ripped)
Sample rate
PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample) / DSD Native: DSD64(1bit 2.8MHz), Stereo
/ DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo
Output Level
Unbalanced 2.0Vrms / Balanced 4.0Vrms (Condition No Load)
DAC
Cirrus Logic CS43198 x2 (Dual DAC)
CPU
Quad-Core
Decoding
Support up to 32bit / 384kHz Bit-to-Bit Playback
Input
USB Type-C input (for PC & MAC)
Outputs
Unbalanced Out (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)
Wi-Fi
802.11 b/g/n (2.4GHz)
Bluetooth
V4.2 (A2DP, AVRCP, aptXTM HD, LDAC)
Dimensions
2.5 ”(63.5 mm) [W] x 4.26 ”(108.3 mm) [H] x 0.63 ”(16.1 mm) [D]
Weight
about 6.27 oz (about 178 g)
Feature Enhancements
Firmware upgrades supported (OTA)
Audio Performance
Frequency Response
±0.014dB (Condition: 20Hz~20kHz) Unbalanced / ±0.011dB (Condition: 20Hz~20kHz) Balanced
±0.10dB (Condition: 20Hz~70kHz) Unbalanced / ±0.12dB (Condition: 20Hz~70kHz) Balanced
Signal to Noise Ratio
122dB @ 1kHz, Unbalanced / 123dB @ 1kHz, Balanced
Crosstalk
-138dB @ 1kHz, Unbalanced / -144dB @ 1kHz, Balanced
THD+N
0.0007% @ 1kHz, Unbalanced / 0.0008% @ 1kHz, Balanced
IMD SMPTE
0.0004% 800Hz 10kHz(4:1) Unbalanced / 0.0003% 800Hz 10kHz(4:1) Balanced
Output Impedance
Unbalanced Out 3.5mm (1.8ohm) / Balanced out 2.5mm (1.6ohm)
Clock source
Clock Jitter
25ps(Typ)
Reference Clock Jitter
200 Femto Seconds
Battery
Capacity
3,150mAh 3.7V Li-Polymer Battery
Continuous Playback Time
About 21 hours (Standard – MUSIC: FLAC, 16-bit/44.1kHz, Unbalance, Volume 50, EQ OFF, LCD OFF)
Charge Time
About 2.5 hours (Standard – 5V/2A Charging)
Memory
Built-in Memory
128GB [NAND]
External Memory
microSD (Max. 1TB) x1
OS
Supported OS
Windows 7,8,10 (32/64bit), MAC OS X 10.7 and up

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