Overview: The Astell & Kern AK120TN from iRiver is a
portable high-fidelity audio system, capable of playing Mastering Quality Sound
(MQS)--high resolution digital audio from music mastering studios. It has a
sleek, brushed aluminum body with a 2.4" touch screen display and an analog
rotary volume control on the side. The AK120TN has built-in 128 GB flash memory
with dual microSD slots for adding even more memory. The unit is powered by a
built-in rechargeable battery, and charges via a Micro USB cable. It comes with
a leather case to protect it from scratches.
Dual Digital-to-Analog Converters: The AK120TN is equipped
with two Wolfson WM8740 24-bit, 192kHz DACs, the same as found in some high-end
audio equipment (AV receivers). Each DAC delivers outstanding performance with a
113dB signal-to-noise ratio, a super-clean 0.0008% THD+N rate, a -128dB Crosstalk
specification for superb left-right separation, and a 10Hz-70kHz Frequency Response
at +0.02dB to -0.02dB. One DAC is used for the left channel, and one for the right
External DAC: With Optical In and Optical Out ports, the
AK120TN can be used as an external optical DAC. You can connect the unit to an
optical out port on your computer or CD player to convert your digital music
files for listening with headphones, a powered speaker, or through the Auxiliary
input of your car or home stereo. You can also use the AK120TN as an external USB
DAC, connecting the unit via USB from your computer and listen to your stored
digital music with headphones, powered speaker, or home stereo.
High Fidelity: The AK120TN is capable of playing high resolution
digital music up to 24-bit, 192kHz, the same as used in the music mastering process.
This Mastering Quality Sound (MQS) includes all of the high resolution formats,
including WAV, AIFF, FLAC, and ALAC. These lossless files provide approximately
6-1/2 times more detail than a CD (16-bit, 44kHz), and can be played at sample
rates of 8kHz-192kHz and 8/16/24-bits per sample. In addition, the unit can play
MP3, AAC, WMA, OGG, and APE compressed audio files.
Built-in and Optional Memory: The Astell & Kern AK120TN is
equipped with 128 GB of internal memory and dual microSD card slots, that support up
to 64 GB each. That gives you a total of 256 GB of storage space that can be used for
saving music files. The microSD slots have a sliding cover to help keep dust out.
User Interface: The AK120TN features a high-quality user
interface to make it easy to find and select your music files, change the volume,
and adjust the sound:
- 2.4" LCD Touchscreen: The full-color LCD touchscreen has a
resolution of 320 x 240 pixels. The screen displays the title and artist of
the currently playing song, along with elapsed and remaining time, with the
album art in the background. On the touchscreen, you can touch the
Play/Pause, Previous/Rewind, or Next/Fast Forward icons to control playback.
You can make adjustments to the EQ, set the repeat and random modes, and add
the song to a playlist, all using the touchscreen interface.
- Rotary Volume Knob: The AK120TN has a side-mounted
analog-style rotary volume knob. The volume control range is 00.0 to 75.0
with detents at every 0.5. As you adjust the volume, the volume range is
shown numerically on the display.
- Hardware Control Buttons: There are four physical
buttons on the unit: a top-mounted power button, along with side-mounted
Play/Pause, Previous/Rewind, and Next/Fast Forward buttons.
Drawing Equalizer: The AK120TN has a 5-band Equalizer that
lets you set the EQ levels by "drawing" the curve on the touchscreen.
You can set the levels of each band from -10dB to +10dB at 62Hz, 250Hz, 1kHz,
4kHz, and 16kHz. Each band can be set one at a time by touching the desired
level on the screen, or set them all at once by a single swipe of the finger
across the screen in the shape you desire.
Micro USB: The AK120TN has a Micro USB port on the bottom of
the unit for connecting the unit to your computer for downloading music files and
for charging the battery. The AK120TN is compatible with Windows XP, Vista, 7 and
8, as well as Mac OS X 10.6.5 and up.
iRiver Plus4: iRiver Plus4 is an integrated software built
into memory of the AK120TN that can be loaded onto your computer when you first
connect your device. With iRiver Plus4, you can rip CDs to your computer and
transfer the music files to the device. You can manage music files using a
drag-and-drop method on the software interface.
Power Requirements: The AK120TN is equipped with a 2350 mAh
3.7V Lithium-Polymer battery. The battery charges via USB in about 6.5 hours. A
fully charged battery can provide up to 14 hours of continuous playback time
(Standard--Music: FLAC, 16-bit, 44kHz, Volume at 37, EQ off, and LCD off).