Astell & Kern AK320 is capable of bit-to-bit playback up to 24bit, 192kHz. 32bit audio is downsampled using a sample-rate converter (SRC). In addition, DSD 64/128 can be played back via conversion to PCM.
PEQ (Parametric EQ)
A parametric equalizer (PEQ*1) was implemented in the Astell & Kern 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, ±0.01 dB to more precisely adjust the frequency and gain (dB) as well as more accurately specifying the frequency range via Q value adjustments.
Equipped With a Femto Clock to Deliver True Original Sound
Astell&Kern implemented a voltage-controlled crystal oscillator (VCXO) high-precision clock with a reference jitter value of 200 femto seconds*3.
Femto clocks are commonly used in high-end audio systems, and the clock is measured in high-precision femtosecond units (one quadrillionth of a second).
The Astell & Kern AK320 supports USB DAC functionality.
Astell & Kern AK320 can be connected to a PC or Mac via USB for use as a USB DAC that supports PCM/DSD.
When playing back music stored on a PC or Mac, the Dual-DAC is able to deliver richer audio of outstanding soundstage and resolution well beyond the limits of a built-in sound card.
AK Connect App
Astell&Kern has further enhanced DLNA functionality via the AK Connect app.
Wireless networking DLNA (version 1.0) connects to a NAS or PC, and is easily controlled with a smartphone or tablet through AK Connect.
Source files on a PC or NAS can be freely transferred and streamed without the hassle of turning on the computer and physically connecting with a cable.
If on the same access point (AP) network, music files on a PC or NAS can be played back via DLNA.The
Pressure-sensitive Metal Capacitive Touch
The Astell & Kern AK320 features the same metal touch interface as the Astell & Kern AK380. The Metal Touch functions as a home key and interfaces with the device via pressure-sensitive touches.
More Expandable Options
The Astell & Kern AK320 can be expanded to a variety of devices through the micro-USB and balanced audio out ports located at the bottom of the product.
It can be connected with the AMP as well as professional high-impedance headphones for high output and USB for data transfer and charging.
It can also be connected to the Cradle for balanced audio functionality as well as the CD-RIPPER to conveniently rip audio CDs.
Frequency Response: ±0.053dB (Condition: 20Hz~20kHz) Unbalance & Balance, ±0.56dB (Condition: 10Hz~70kHz) Unbalance / ±0.55dB (Condition: 10Hz~70kHz) Balance
Signal to Noise Ratio: 116dB @ 1kHz, Unbalance / 117dB @ 1kHz, Balance
Crosstalk: 130dB @ 1kHz, Unbalance / 135dB @ 1kHz, Balance
THD+N: 0.0008% @ 1kHz, Unbalance / 0.0007% @ 1kHz, Balance
IMD SMPTE: 0.0007% 800Hz 10kHz(4:1) Unbalance / 0.0006% 800Hz 10kHz(4:1) Balance
Output Impedance: Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)
Display: 4inch WVGA (480 x 800) Touchscreen
Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE(Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
Sample rate: PCM: 8kHz ~ 192kHz (8/16/24bits per Sample), DSD : DSD64, Stereo / DSD128, Stereo
Output Level: Unbalance 2.2Vrms / Balance 2.3Vrms (Condition No Load)
DAC: AKM AK4490 x2 (Dual DAC)
Decoding: Support up to 24bit / 192kHz Bit to Bit Decoding
Input: USB Micro-B input (for charging & data transfer (PC & MAC)) / Connection Mode : MTP (Media Device)
Outputs: 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 (A2DP, AVRCP, aptX™ HD)
Dimensions: 2.95 ”(75.15 mm) [W] x 4.42 ”(112.4 mm) [H] x 0.64 ”(16.45 mm) [D] Weight: 7.65 oz (217 g)
Feature Enhancements: Firmware upgrades supported (OTA)