Description
Astell & Kern AK70 High Resolution 24bit 192kHz bit to bit Playback Digital Audio Player with 64GB Built-in Memory The AK70s DAC based on market-proven CS4398 chips of Cirrus Logic has been used for years in Hi-Fi audios and the second-generation Astell & Kern devices. 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. 32bit 384kHz is downsampled to 24bit 192kHz and 32bit 352kHz is downsampled to 24bit 176kHz for playback DSD 64/128 is converted via DSD-to-PCM to PCM 24bit 176kHz for playback. Support for balanced headphones The AK70 supports the 2.5-mm 4-pole balanced output (2.3 Vrms) that has been in use since the second generation of the Astell & Kern players. 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. AK70 USB DAC Mode The AK70 supports USB audio digital out first among Astell&Kern devices. The AK70 can be used with a USB DAC that can double as an embedded sound card by connecting with a PC/Mac through the USB port. In the case of using the PCs 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 ...
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