Flagship Premium D/A Converter


Flagship Premium D/A Converter

New Product

AKM’s VERITA audio devices target high-end and boutique audio equipment. These devices integrate cutting-edge features ideal for the Hi-Fi and high-resolution audio markets.


The AK4499EQ current-output DAC is AKM’s latest VELVET SOUND VERITA product, following on from the previous flagship device, the AK4497EQ.

Current-output DAC Achieves Best-in-Class Performance

AKM’s Low-Distortion Technology has been optimized for the AK4499’s current-output architecture, resulting in a THD+N measurement of -124dB. The AK4499EQ achieves SNR of 140dB in mono mode.

Dynamic High-Resolution Playback with Incredible Detail

The AK4499EQ is produced using the same Premium Audio LSI process and Non-Magnetic Packaging technology originally developed for the AK4497EQ. These techniques dramatically improve noise performance, especially in the traditionally problematic lower frequency range.


High-end Audio, Professional Audio, AV Receivers, CD/SACD Players, Network Audio, USB DAC’s, USB Headphones, Sound Plates, Sound Bars, PA Equipment, Bluetooth Headphones, HD Audio, Voice Conference Equipment, IC Recorders, Measurement Instruments, Control Systems

Key Features

  • Maximum Sampling Frequency, Bit rate : PCM 768kHz/32-bit, DSD 22.4MHz
  • SNR : 140dB
  • THD+N : -124dB
  • Sound Color Digital Filter : 6 types

Block Diagram


Main Specifications

Part Number
AK4499EQ AK4497EQ
Number of Channels  4ch 2ch
Output architecture  Current Voltage
Resolution  32-bit 32-bit
THD+N  -124dB -116dB
DR, S/N 134dB
140dB (Mono Mode)
131dB (Mono Mode)
Sampling Rate  8 to 768kHz 8 to 768kHz
DSD Input  22.4MHz 22.4MHz
Low Distortion Technology Yes Yes
LSI Process for Audio Yes Yes
Non-Magnetic Pkg Yes Yes
“Sound Color” Digital Filters  6 types 6 types
Power Consumption  667mW 346mW
Power Supply Analog : 4.75 to 5.25V
Digital : 1.7 to 3.6V
Analog : 4.75 to 5.25V
Digital : 1.7 to 3.6V
Operation Temperature Range -40 to +85°C -40 to +85°C
Package 128-pin HTQFP 64-pin TQFP


AK4499EQ Datasheet
English [019001308-E-00]
(117 Pages PDF: 1,686KB)

AK4499EQ Application Note 
English [C016-01]
(15 Pages PDF: 342KB)

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VELVET SOUND is a sound philosophy and brand concept for AKM’s next-generation audio devices, featuring new chip architectures and core technologies.

The new circuitry found in VELVET SOUND devices is designed to maximize dynamics and ensure pure, unaltered audio data, prioritizing the accurate capture and reproduction of the source material in order to achieve high performance and rich musicality. These devices were designed specifically for the high-resolution digital audio era.

* VELVET SOUND ™, VELVET SOUND | VERITA ™ and Audio 4 Pro ™ are trademarks of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.