News Release

- New Product Information -

2016/01/07
AK4497, A New Flagship Premium D/A Converter has been developed enabling the Highest Sound Quality and Performance available from AKM

Product Name
VERITA AK4497EQ
(Product: Audio > Premium Audio > Premium DACs)
Title
32-bit Stereo Premium D/A Converter 
DR,S/N:128dB THD+N: -116dB 
Sampling Rate: 8 to 768kHz Supporting DSD 22.4MHz
Applications
High-end Audio, Professional Audio, AV Receivers, CD/SACD Players, Network Audio, USB DAC’s
AK4497EQ
Premium DAC VERITA AK4497EQ
VELVET SOUND Premium Audio Devices VERITA Audio 4 Pro

Description

The high-end audio market is being driven by the growing availability of high-resolution sound sources. Aasahi Kasei Microdevices Corporation (AKM) has developed a new 3rd generation flagship premium D/A converter, the VERITA AK4497. This is the new, higher performing solution of the VERITA AK4490 that is adopted by many audio products since it was launched in 2014.

The AK4497 is a new generation premium 32-bit DAC based on AKM’s VELVET SOUND architecture that has been widely adopted by well-established high-end audio companies. High signal to noise performance is achieved by improving VELVET SOUND technology by supporting a larger current drive capability. The performance of an audio DAC using switched capacitor is expanded to the limit with the AK4497. In addition, AKM has developed an original process that has greatly improved low noise performance and electric margin for audio devices, increasing data amount and enhancing original acoustic sound that can be found in the sound strength.

The AK4497 has been introduced in CES 2016 that is held from 6th Jan. at Las Vegas, NV, USA.
Samples are available from Feb. 2016 and mass production will be available from the summer 2016.

● Dynamic Sound Playback with Large Amount of Playback Information: VELVET SOUND architecture is improved

Not only circuit designing but also the LSI manufacturing process was newly developed at AKM exclusively for AKM’s audio devices.  The AK4497 is the first device to utilize this process in AKMs foundry. 32-bit processing is integrated for the IRD (Impulse Response Designed) Filter, reproducing a detailed and natural signal wave. A low-dispersion short delay filter was newly added to the other five filters found in our previous generation device. So, six different digital filter types are selectable according to the user audio and system preferences.

● AKM’s Best Performance D/A Converter

Low-distortion technology achieves industry’s best performance of -116dB THD+N DAC with 128dB S/N characteristic. The AK4497 has the best performance among AKM’s D/A converters. In addition, OSRD (Over Sampling Ratio Doubler) technology greatly reduces out of band noise.

● Supporting High Resolution Data

The first in the industry, a 22.4MHz DSD input is supported. The digital input supports up to 768 kHz PCM and 22.4 MHz DSD (Direct Stream Digital), recreating high-resolution sound that is as close as possible to the original acoustic source.

Features

AK4497EQ
VERITA AK4497EQ
Flagship
Premium D/A Converter
DR, S/N128dB (Mono mode: 131dB)
THD+N-116dB
Sampling Rate8kHz to 768kHz
DSD Input2.8MHz, 5.6MHz, 11.2MHz, 22.4MHz
Sound ColorSix Types, 32-bit 8-fold Digital Filters
- Short Delay Sharp Roll-off, GD=6.25/fs
- Short Delay Slow Roll-off, GD=5.3/fs
- Sharp Roll-off
- Slow Roll-off
- Super Slow Roll-off
- Low-dispersion Short Delay
Resolution32-bit
Number of Channel2ch
VELVET SOUND
Technology
Low-distortion technology
OSRD (Over Sampling Ratio Doubler) technology
Power Consumption346mW
Power SupplyAnalog: 4.75 to 5.25V
Digital: 1.7 to 3.6V
Operation Temperature-40 to 85°C
Package64-pin TQFP (10mm x 10mm)

To obtain more information about the AK4497, please visit here.

Lineup

3rd Generation 32-bit 2ch Premium D/A Converter

Product Name

AK4497EQ
VERITA AK4497EQ

Flagship
Premium
D/A Converter

AK4490EQ
VERITA AK4490EQ

High-end
Premium
D/A Converter

AK4452VN
AK4452VN


Premium
D/A Converter

DR, S/N 128dB
(Mono mode: 131dB)
120dB
(Mono mode: 123dB)
115dB
THD+N -116dB -112dB -107dB
Sampling Rate 8kHz to 768kHz 30kHz to 768kHz 8kHz to 768kHz
DSD Input Max: 22.4MHz Max: 11.2MHz
Sound Color Six Types
32-bit 8-fold Digital Filters
- Short Delay Sharp Roll-off, GD=6.25/fs
- Short Delay Slow Roll-off, GD=5.3/fs
- Sharp Roll-off
- Slow Roll-off
- Super Slow Roll-off
- Low-dispersion Short Delay
Five Types
32-bit 8-fold Digital Filters
- Short Delay Sharp Roll-off, GD=6.25/fs
- Short Delay Slow Roll-off, GD=5.3/fs
- Sharp Roll-off
- Slow Roll-off
- Super Slow Roll-off
Resolution 32-bit
Number of Channel 2ch
Input Method Full Differential Input
VELVET SOUND
Technology
Low-distortion technology
OSRD (Over Sampling Ratio Doubler) technology
Power Consumption 346mW 145mW 50mW
Power Supply Analog: 4.75 to 5.25V
Digital: 1.7 to 3.6V
Analog: 4.75 to 5.25V
Digital: 3.0 to 3.6V
Analog: 3.0 to 5.5V
Digital: 1.7 to 3.6V
Operation Temperature -40 to 85°C -40 to 105°C
Package 64-pin TQFP
(10mm x 10mm)
48-pin LQFP
(7mm x 7mm)
32-pin QFN
(5mm x 5mm)
Samples
Distributors/
Representatives


Global Web Distributor
Digi-Key
Global Web Distributor
Digi-Key
VELVET SOUND VERITA
About "VELVET SOUND"

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 4 Pro
About "Audio 4 Pro"

Audio 4 Pro™ products are designed for pro audio equipment, including mixing consoles, electronic musical instruments and sound effectors, meeting the highest sound quality standards of recording studios. Audio 4 Pro™ products range provides world-leading performance with high quality sound, winning trust within professional audio industry.

[Notes]
* Information on this page is current on the date of press release.
* AKM, VELVET SOUND Logo™ and Audio 4 Pro™ are trademarks of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.

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