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- Audio Performance
- Frequency Response : ±0.023dB (Condition: 20Hz~20kHz) Unbalance & Balance/ ±0.3dB (Condition: 10Hz~70kHz) Unbalance & Balance
- Signal to Noise Ratio : 116dB @ 1kHz， Unbalance / 117dB @ 1kHz， Balance
- Crosstalk : 130dB @ 1kHz， Unbalance / 135dB @ 1kHz， Balance
- THD+N : 0.0007% @ 1kHz， Unbalance / 0.0005% @ 1kHz， Balance
- IMD SMPTE : 0.0004% 800Hz 10kHz(4:1) Unbalance / 0.0003% 800Hz 10kHz(4:1) Balance
- Output Impedance : Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)
- Specifications
- Model : AK240
- Body Color : Gun Metal
- Body Material : Aircraft Grade Duralumin
- Display : 3.31inch WVGA (480 x 800) AMOLED Touchscreen
- Supported Audio Formats : WAV， FLAC， WMA， MP3， OGG， APE(Normal， High， Fast)， AAC， ALAC， AIFF， DFF， DSF
- Sample rate : FLAC， WAV， ALAC， AIFF : 8kHz ~ 192kHz (8/16/24bits per Sample) / DSD Native : DSD64 (1bit 2.8MHz)， Stereo / DSD128 (1bit 5.6MHz)， Stereo
- Output level : Unbalance 2.1Vrms / Balance 2.3Vrms (Condition No Load)
- DAC : Cirrus Logic CS4398 x2 (Dual DAC)
- Decoding : Support up to 24bit/192kHz Bit to Bit Decoding， DSD64/128
- Input : USB Micro-B input (for charging & data transfer (PC & MAC)) / Connection Mode : MTP (Media Device)
- Output : PHONES (3.5mm) / Optical Out (3.5mm) / Balanced Out (2.5mm， only 4-pole supported)
- Wi-Fi : 802.11 b/g/n (2.4GHz)
- Bluetooth : V4.0
- Dimensions : 2.59 ”(66 mm) [W] x 4.21 ”(107 mm) [H] x 0.68 ”(17.5 mm) [D]
- Weight : 6.5 oz (185 g)
- Feature Enhancements : Firmware upgrades supported (OTA)
- Clock Jitter : 50ps (Typ)
- Battery Capacity : 3，250mAh 3.7V Li-Polymer Battery
- Memory(Built-in) : 256GB [NAND]
- > Memory(External) : microSD (Max 128GB) x1
- Supported OS : Windows XP， Windows 7，8 (32/64bit)， MAC OS X 10.7 and up
