AK70 Digital Audio Player
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The volume wheel is designed to be protruding slightly from a concave surface so that you can control volume with a simple motion of sliding your finger up and down. With slim
13-mm thickness and 132-gram lightweight, the palm-sized device is easy to carry anywhere.
The AK70 has adopted a pastel-color anodized aluminum casing, which makes it look high quality
with its light mint color and glossy silver tone. The smart-looking exterior and smooth color make the device look more casual and simpler.
The AK70 plays back 24bit 192kHz signals into bit-to-bit type.
32bit audio is downsampled using a sample-rate converter. In addition, DSD 64/128 can be played back through conversion to PCM.
* DSD 64/128 is converted via DSD-to-PCM to PCM 24bit, 176kHz for playback.
Unlike the unbalanced type, the balanced output type is capable of removing noise (common mode noise) that can occur in “signal + inverting amplifier signal” and has the strength of increasing output due to its double transmitting signals.
The AK70 can be used with a variety of balanced earphones and headphones made for Astell&Kern. It can also support the 3.5-mm 3-pole unbalanced output (2.3 Vrms), with compatibility with a variety of Hi-Fi earphones and headphones.
You can connect diverse digital-input portable amps through USB to the AK70. The AK70 can transfer DSD in native through DoP. It can also convert DSD into PCM for output for portable amps that do not support DoP.
* DoP (DSD over PCM) : This is a standard for transferring DSD data to USB interface. This standard sends DSD data by mounting them onto PCM data frames.
* In order to link the AK70 with a portable amp, one needs OTG cable, which is not included in the AK70 package.
* The cable connecting OTG cable with a portable amp differs depending on the specs of the amp, >which is not included in the AK70 package.
In the case of using the PC's embedded sound card, one may have to go through a complicated process to play back DSD data. In contrast, the AK70 can do so simply by connecting with the PC.
In the case of using the AK70 as a USB DAC, it can support up to 24-bit 96 kHz bit to bit, providing much richer sound through superior ambience and resolution way beyond the limits of an embedded sound card.
* DSD 64/128 is converted via DSD-to-PCM for playback.
By inheriting from the AK500N, it supports the CD track error correction feature and the meta data (ID3TAG) auto input feature using Gracenote's database without any change.
It is also appointed with wireless networking DLNA (Ver. 1.0), which makes it easy to work with NAS/PC on the same network and through an AK Connect app supporting smartphone/tablet computer.