Astell & Kern AK380
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Astell&Kern has stayed on the course, offering the truest and most natural sound possible.
The new AK380 offers the most authentic sound from any digital music format with enhanced features that are sought-after by Pro-Audio.
All of the AK380’s circuit design including the digital-analog converter (DAC) are ready for 32-bit processing to handle 32-bit music natively.
Other products have traditionally used sample rate converter (SRC) method down sampling for playback. However, the AK380 is capable of playing back 32-bit, 384 kHz original sound without any down sampling.
The result is the AK380 plays up to 32-bit, 384 kHz, any 24-bit music files, or double layer DSD 5.6MHz natively, without conversion or compression.
A parametric equalizer (PEQ*1) was implemented in the AK380 to deliver detailed adjustment of the original sound, and an audio digital signal processor (DSP) was added to aid in this process.
This frees up CPU cycles previously needed for calculating graphic equalizers (GEQ), allowing more detailed and accurate calculations via the dedicated DSP.
The audio DSP expands the existing 10-band, ±0.5 dB graphic equalizer (GEQ*2) to 20-band, ±0.1 dB to more precisely adjust the frequency and gain (dB) as well as more accurately specifying the frequency range via Q value adjustments.
* The PEQ supports up to 8 kHz - 192 kHz (8/16/24-bit) formats, but DSD and 32-bit audio are not supported.
Supported Audio Formats
Aircraft Grade Duralumin
4inch WVGA (480 x 800) Touchscreen
WAV, FLAC, WMA, MP3, OGG, APE(Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample)
/ DSD Native: DSD64(1bit 2.8MHz), Stereo/ DSD128(1bit 5.6MHz), Stereo
Unbalance 2.2Vrms / Balance 2.3Vrms (Condition No Load)
AKM AK4490 x2 (Dual DAC)
Support up to 32bit / 384kHz Bit to Bit Decoding
USB Micro-B input (for charging & data transfer (PC & MAC))
/ Connection Mode : MTP (Media Device)
PHONES (3.5mm) / Optical Out (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)
802.11 b/g/n (2.4GHz)
V4.0 (A2DP, AVRCP)
3.14 ”(79.8 mm) [W] x 4.42 ”(112.4 mm) [H] x 0.70 ”(17.9 mm) [D]
8.11 oz (230 g)
Firmware upgrades supported (OTA)
Signal to Noise Ratio
±0.053dB (Condition: 20Hz~20kHz) Unbalance & Balance
±0.56dB (Condition: 10Hz~70kHz) Unbalance / ±0.55dB (Condition: 10Hz~70kHz) Balance
116dB @ 1kHz, Unbalance / 117dB @ 1kHz, Balance
130dB @ 1kHz, Unbalance / 135dB @ 1kHz, Balance
0.0008% @ 1kHz, Unbalance / 0.0007% @ 1kHz, Balance
0.0007% 800Hz 10kHz(4:1) Unbalance / 0.0006% 800Hz 10kHz(4:1) Balance
Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)
Reference Clock Jitter
200 Femto Seconds
3,400mAh 3.7V Li-Polymer Battery
microSD (Max 128GB) x1
Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up