| Specifications |
|
|
|
| General |
|
| Supported media |
SD cards (512 MB – 2 GB) |
| SDHC
cards (4–32 GB) |
| SDXC
cards (64–512 GB) |
| USB
flash drives (512 MB – 512 GB) |
| File
system format: FAT16, FAT32 or exFAT |
| Playback file formats |
|
| WAV |
44.1/48 kHz, 16/24 bit (LPCM) |
| MP3 |
44.1/48 kHz,
32/64/96/128/192/256/320 kbit/s, VBR |
| AAC |
44.1/48 kHz, 32–320 kbit/s, VBR
(MPEG4 AAC-LC (audio stream), DRM not supported) |
| Maximum file size |
4 GB |
| Maximum number of files |
999 (including folders) |
| Maximum number of folder levels |
16 (The full path, including the
file name, must not exceed 260 characters.) |
| Number of audio channels |
2 channels (stereo) |
| 1
channel (mono) |
| Analogue audio inputs and outputs |
|
| Analogue
output (balanced) |
XLR-3-32 (1: GND, 2: HOT, 3:
COLD) |
| Rated output level |
+4 dBu (1.23 Vrms, level setting
off) |
| Maximum output level (switchable) |
+20 dBu (7.75 Vrms, level
setting off) |
| Output impedance |
100 O |
| Analogue
output (unbalanced) |
RCA pin jacks |
| Rated output level |
-10 dBV (0.316 Vrms, level
setting off) |
| Maximum output level (switchable) |
+6 dBV (2.0 Vrms, level setting
off) |
| Output impedance |
210 O |
| Tuner
outputs (unbalanced) |
RCA pin jacks |
| Rated output level |
-10 dBV (0.316 Vrms, -16 dBFS
DAC output, output level setting off) |
| Maximum output level (switchable) |
+6 dBV (2.0 Vrms, 0 dBFS DAC
output, output level setting off) |
| Output impedance |
210 O |
| Headphones
output |
6.3-mm standard stereo jack |
| Maximum output power |
= 20 mW + 20 mW (THD+N 0.1 % or
less, 32 O load) |
| 0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms |
|
| Other inputs and outputs |
|
| Remote
connector |
2.5-mm TRS jack (Tip: Signal 1,
Ring: Signal 2, Sleeve: GND) |
| Control
input/output |
|
| IN |
3.5-mm TRS jack (active low
reception, 30 ms or longer ground) |
| OUT |
3.5-mm TRS jack (open collector,
maximum voltage 15 V, maximum current 35 mA, maximum output
250 mW) |
| USB
flash drive port |
4-pin USB Type-A |
| Protocol |
USB 2.0 HIGH SPEED (480 Mbps) |
| Device class |
Mass storage |
| USB
audio stream port |
USB Type-C |
| Protocol |
USB 2.0 HIGH SPEED (480 Mbps) |
| Device class |
USB audio 2.0 (USB class
compliant) |
| Bluetooth
adapter port |
For optional Bluetooth adapter
AK-BT2 only |
| Antenna
input |
F-type connector (female) |
| Audio performance |
|
| Frequency
response |
20 Hz – 20 kHz, +0.5 dB / -1 dB
(SD/USB playback to analogue output, JEITA) |
| Distortion |
=0.005 % (SD/USB playback to
analogue output, JEITA) |
| S/N
ratio |
=95 dB (SD/USB playback to
analogue output, JEITA) |
| Dynamic
range |
=95 dB (SD/USB playback to
analogue output, JEITA) |
| Channel
separation |
=95 dB (SD/USB playback to
analogue output, 1 kHz sine wave, JEITA) |
| Tuner (radio receiver) |
|
| Frequency
range |
|
| DAB |
Band III, 174–240 MHz |
| FM |
87.5–108 MHz |
| Computer hardware requirements |
|
| Windows |
Windows computer with a USB 2.0
or USB 3.0 port |
| CPU/processor speed |
2 GHz or faster dual core
processor (x86) |
| Memory |
2 GB or more |
| macOS |
Mac with USB 2.0 or higher |
| CPU/processor speed |
2 GHz or faster dual core
processor |
| Memory |
2 GB or more |
| Power supply and other specifications |
|
| Power
supply |
AC 100–240 V, 50/60 Hz |
| Power
consumption |
14 W |
| Dimensions
(W x H x D, including protrusions) |
483 mm × 47 mm × 297 mm |
| Weight |
2.7 kg |
| Permissible
operating temperature range |
0–40 °C |