Product name |
AK120 128GBGB Stone Silver |
AK100II 64GB Smoky Blue |
Color |
Silver Stone |
Smoky Blue |
Body Material |
Aluminum |
Display |
3.31-inch WVGA (480 x800) AMOLED capacitive |
File format |
WAV, FLAC, WMA, MP3, OGG, APE (Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
(DSD is reproduced in PCM conversion) |
Sampling rate |
FLAC, WAV, ALAC, AIFF: 8 kHz ~ 384 kHz (8/16/24/32Bit Float / Integer) * 384 kHz to 192 kHz , 352.8KHz is 176.4kHz will play down to sampling. * 32bit is, 24bit down-converted to a
|
(1bit 2.8MHz), stereo / DSD128 (1bit 5.6MHz), stereo DSD64 * DSD is,PCM/176.4KHz/24bit converted to |
Output Level |
Unbalanced 2.1Vrms + 2.1Vrms / balance 2.3Vrms + 2.3Vrms (no load) |
Unbalanced 2.0Vrms + 2.0Vrms / balance 1.7Vrms + 1.7Vrms (no load) |
DAC |
(Dual DAC, L / R independent) Cirrus Logic CS4398 x 2 |
Cirrus Logic CS4398 (single DAC) |
Decode |
Up to 32bit (float / Integer) / 192kHz bit to bit decode |
Input terminal |
And data transfer (charging USB micro-B input (PC & MAC) |
Connection mode MTP (Media Device) |
Output terminal |
(2.5mm, 4 contacts only) (3.5mm) / optical digital output (3.5mm) / balanced output headphone out |
Wi-Fi |
IEEE 802.11 b / g / n (2.4GHz) |
Bluetooth |
V4.0 (A2DP/AVRCP) |
Size |
55mm [W] x 118mm [H] x 14.9mm [D] |
55mm [W] x 111mm [H] x 14.9mm [D] |
Weight |
177g |
170g |
Other Features |
Firmware upgrade (OTA) |
Frequency characteristic |
± 0.023dB (20Hz ~ 20kHz) unbalanced balance |
± 0.025dB (20Hz ~ 20kHz) unbalanced balance |
± 0.3dB (10Hz ~ 70kHz) unbalanced balance |
± 0.6dB (10Hz ~ 70kHz) unbalanced balance |
S / N ratio |
(Unbalanced 1kHz/0dB, 48kHz/24bit, no load) 116dB |
(Unbalanced 1kHz/0dB, 48kHz/24bit, no load) 114dB |
(Balance 1kHz/0dB, 48kHz/24bit, no load) 117dB |
(Balance 1kHz/0dB, 48kHz/24bit, no load) 115dB |
Crosstalk |
(Unbalanced 1kHz/0dB, 48kHz/24bit, no load) 130dB |
(Unbalanced 1kHz/0dB, 48kHz/24bit, no load) 127dB |
(Balance 1kHz/0dB, 48kHz/24bit, no load) 135dB |
(Balance 1kHz/0dB, 48kHz/24bit, no load) 130dB |
THD + N |
(Unbalanced 1kHz/0dB, 48kHz/24bit, no load) 0.0007% |
(Unbalanced 1kHz/0dB, 48kHz/24bit, no load) 0.0009% |
(Balance 1kHz/0dB, 48kHz/24bit, no load) 0.0005% |
(Balance 1kHz/0dB, 48kHz/24bit, no load) 0.0008% |
IMD |
0.0004% (unbalanced 800Hz 10kHz (4:1)) |
0.0004% (unbalanced 800Hz 10kHz (4:1)) |
0.0003% (balance 800Hz 10kHz (4:1)) |
0.0003% (balance 800Hz 10kHz (4:1)) |
Output Impedance |
1Ω (balance) / 2Ω (unbalanced) |
1Ω (balance) / 2Ω (unbalanced) |
Clock jitter |
50ps (Typ) |
50ps (Typ) |
Embedded memory |
Including the 128GB NAND flash * system area |
Including 64GB NAND flash * system area |
Expansion slot |
microSD (up to 128GB) x 1 |
microSD (up to 128GB) x 1 |
Battery |
3,250 mAh 3.7V lithium polymer battery |
3,150 mAh 3.7V lithium polymer battery |
Support OS |
Windows ® XP, Windows ® Vista, Windows ® 7,8 (32/64bit) |
Windows ® XP, Windows ® Vista, Windows ® 7,8 (32/64bit) |
10.7. Above MAC OS X |
10.7. Above MAC OS X |