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AKM Releases New Flagship Premium D/A Converter AK4497, the Highest Sound Quality and Performance

2016-07-22 | Return

Product Name
VERITA AK4497EQ

(Product: Audio & Voice > 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

Aasahi Kasei Microdevices Corporation (AKM) has released a new 3rd generation flagship premium D/A converter, the VERITA AK4497 announced in January 2016.

Description

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.

● 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

K4497EQVERITA AK4497EQ Flagship Premium D/A Converter
DR, S/N	128dB (Mono mode: 131dB)
THD+N	-116dB
Sampling Rate	8 to 768kHz
DSD Input	2.8MHz, 5.6MHz, 11.2MHz, 22.4MHz
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
Resolution	32-bit
Number of Channel	2ch
VELVET SOUND Technology	Low-distortion technology OSRD (Over Sampling Ratio Doubler) technology
Power Consumption	346mW
Power Supply	Analog: 4.75 to 5.25V Digital: 1.7 to 3.6V
Operation Temperature Range	-40 to 85°C
Package	64-pin TQFP (10mm x 10mm)

Lineup

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

Product Name	VERITA AK4497EQ Flagship Premium D/A Converter	VERITA AK4490EQ High-end Premium D/A Converter		VERITA AK4490EN High-end Premium D/A Converter	AK4452VN Premium D/A Converter
DR, S/N	128dB (Mono mode: 131dB)	120dB (Mono mode: 123dB)			115dB
THD+N	-116dB	-112dB			-107dB
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	100mW	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: 4.75 to 5.25V Digital: 1.6 to 3.6V	Analog: 3.0 to 5.5V Digital: 1.7 to 3.6V
Operation Temperature	-40 to 85°C		-40 to 85°C		-40 to 105°C
Package	64-pin TQFP (10mm x 10mm)		48-pin LQFP (7mm x 7mm)	48-pin QFN (6mm x 6mm)	32-pin QFN (5mm x 5mm)
Samples Distributors/ Representatives			Global Web Distributor		Global Web Distributor Digi-Key

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.

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.

Source:http://www.akm.com/