Questyle QP2R High-Res Lossless Digital Audio Player Portable DAP

Specifications – Patented fully discrete/full-balanced/Current Mode AMP – Pure Class A BIAS control system Audio Formats Supported: WAV, FLAC, WMA, MP3, OGG, AAC, ALAC,AIFF, DFF, DSF，APE(Normal/High/Fast) Sample Rate PCM 32kHz – 384kHz (16/24/32Bit) DSD Native: DSD64(1Bit 2.8MHz), DSD128(1Bit 5.6MHz), DSD256(1Bit 11.2MHz) DAC   AKM AK4490 DAC chip Outputs: Headphone out(3.5mm)/Optical out(3.5mm)/Balanced out(2.5mm) Output Level: Unbalanced 1.6 Vrms / Balanced 3.2 Vrms Output Power Unbalanced    RL=32Ω，Pout=38mW; RL=300Ω， Pout=9mW Balanced     RL=32Ω，Pout=70mW; RL=300Ω， Pout=38Mw Frequency Response  ±0.1dB (20Hz-20kHz) S/N    100dB @ 1kHz, Unbalanced / 102dB @ 1kHz, Balanced THD+N    0.0006% @ 1kHz, Unbalanced / 0.0005% @ 1kHz, Balanced Output Impedance:0.1Ω Charging & Data Transfer: Type-C , 5V 2A (PC & MAC) PC OS Requirements: Windows XP / Windows 7&8(32/64bit) / Mac OS X 10.7 or later Memory   Internal: 64GB;  External: Micro SD card (Max. 200GB) x 1 Battery: 3,100mAh 3.7V Li-Polymer battery, 10 hours of battery life Display: IPS 2.4inch (Sharp LCM) Operating System: Linux Body Material: CNC machining aluminum, available in Gold/Space Gray Dimension: 65[W] x 134[H] x 14.5[D] (mm)