News Release

- New Product Information -

2014/07/07 (updated 2015/03/23)
AK4375 : Advanced Audio Headphone DAC for Smartphones and High Resolution Portable Players

Product Name
AK4375 / AK4375A
(Products: Silicon Solutions > Audio > Advanced Audio)
32-bit Advanced Stereo D/A Converter with Headphone Amplifier
Smartphones, Tablets, Portable Music Players, Wireless Headphones


Asahi Kasei Microdevices Corporation (AKM) today launched the AK4375; a high performance 32-bit advanced audio DAC for smartphones and high resolution portable players.
AKM’s original architecture which is established by premium audio devices has been specifically redesigned for portable applications, realizing high quality sounds for music playback. As an audio device for mobile applications, the AK4375 achieves industry leading level performance of THD+N (-99dB) and 110dB dynamic range with newly developed 32-bit advanced audio DAC and cap-less class G headphone amplifier.
In addition, the AK4375 integrates asynchronous SRCs and crystal oscillator for jitter isolation to prevent degradations of analog characteristics and sound qualities by external clock jitter. It is suitable for audio devices with Hi-Fi function such as smartphones, tablets, portable music players and wireless headphones. The AK4375 is housed in an ultra-small space saving 36-pin CSP package. Evaluation boards and samples are available now.

To obtain more information about the AK4375, please visit here.


VELVET SOUND is a brand concept of, “sound philosophy”, given to AKM’s new generation of audio devices and, “new architecture & core technologies”. A new circuit is designed to, “balance the amount of information and intensity”, and, “focus on the original sound”, to achieve rich musicality and high performance. This circuit contains specifications and features suitable for the high-resolution audio era.

Audio 2 Go
About "Audio 2 Go"

Audio 2 Go™ products are designed for portable audio applications, including smartphones, tablet computers and media players, which provide feature-rich, single chip solution with low power consumption and high audio fidelity.

* Information on this page is current on the date of press release.
* * AKM, VELVET SOUND logo™ and Audio 2 Go™ are trademarks of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
* Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.

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