AK100 II

Portable digital audio player with a 3.31-inch AMOLED touchscreen, a single Cirrus Logic CS4398 DAC and both 3.5mm and 2.5mm balanced headphone outputs. It suits listeners who want a compact player with 64GB onboard storage, microSD expansion and DSD playback.

Single Cirrus Logic CS4398 DAC with 2.5mm balanced output
Plays up to 24bit/192kHz PCM, DSD64 and DSD128
3.31-inch AMOLED touchscreen, 480 x 800
64GB internal memory plus microSD slot
10-band, 0.5dB-step user EQ
USB DAC mode and OTA firmware updates over Wi-Fi

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Cur síos

The AK100 II is the second generation of the AK100 portable player. It is built around one CS4398 DAC with a re-tuned amplifier stage and offers a 2.5mm balanced output alongside the standard 3.5mm headphone output. It decodes up to 24-bit/192kHz files and plays DSD64 and DSD128 stereo files, the latter by conversion to 176kHz PCM on its dual-core processor.

The player has a 3.31-inch AMOLED touchscreen with a redesigned album view that shows six albums at once. The EQ has 10 bands in 0.5dB steps, and over-the-air firmware updates are delivered over Wi-Fi. The aluminium body has a top-mounted volume wheel with a guard, and a hairline and diamond-cut finish. Storage is 64GB onboard with a microSD slot for more.

For connections, it has a Micro-B USB port for charging and data transfer, and the unit also works as a USB DAC with a PC or Mac at up to 24-bit/96kHz, with the EQ not applied in that mode. An optical output shares the 3.5mm format, and Wi-Fi 802.11 b/g/n supports updates and streaming from an MQS server.

Físeán

Sonraíochtaí

Branda: Astell&Kern
Samhail: AK100 II
Catagóir: Hi-Fi agus fuaim an tí › Seinnteoirí

Audio

DAC: Cirrus Logic CS4398 x1 (Single DAC)
Decoding: Up to 24bit/192kHz Bit to Bit Decoding
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); DSD64 (1bit 2.8MHz), Stereo / DSD128 (1bit 5.6MHz), Stereo
Output level: Unbalance 2.0Vrms / Balance 1.7Vrms (No Load)
Frequency response: ±0.025dB (20Hz~20kHz) / ±0.6dB (10Hz~70kHz), Unbalance & Balance
Signal to noise ratio: 115dB @ 1kHz, Unbalance / 115dB @ 1kHz, Balance
Crosstalk: 127dB @ 1kHz, Unbalance / 130dB @ 1kHz, Balance
THD+N: 0.0009% @ 1kHz, Unbalance / 0.0008% @ 1kHz, Balance
IMD SMPTE: 0.0004% Unbalance / 0.0003% Balance (800Hz 10kHz, 4:1)
Clock jitter: 50ps (Typ)
Equalizer: 10-band, 0.5dB step

Inputs and Outputs

Input: USB Micro-B (charging & data transfer, PC & MAC), MTP mode
Outputs: PHONES (3.5mm) / Optical Out (3.5mm) / Balanced Out (2.5mm, 4-pole only)
Output impedance: Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)
USB DAC: UAC 1.0, up to 24bit/96kHz, EQ not applied

Connectivity

Wi-Fi: 802.11 b/g/n (2.4GHz)
Firmware updates: OTA supported

Storage

Built-in memory: 64GB [NAND]
External memory: microSD (Max 256GB) x1

Display

Display: 3.31inch WVGA (480 x 800) AMOLED Touchscreen

Power

Battery: 3,150mAh 3.7V Li-Polymer

Physical

Body material: Aluminum
Body color: Smoky Blue
Dimensions: 55 mm (W) x 111 mm (H) x 14.9 mm (D)
Weight: 170 g

Software

Supported OS: Windows XP, Windows 7, 8, 10 (32/64bit), MAC OS X 10.7 and up

Sonraí: astellnkern.com; grianghraif: Astell&Kern product page · nuashonraithe 2026-10-12 · Botún aimsithe? Scríobh chugainn