Home Audio

All in the name of ultimate Real Live Sound:

Leading a new era of High-resolution audio

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.

FEATURED PRODUCTS

VERITA AK4499EQ

Flagship 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.
VERITA AK4499EQ

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

Dynamic High-Resolution Playback with Incredible Detail

Key Features

  • Maximum Sampling Frequency, Bit rate : PCM 768kHz/32-bit, DSD 22.4MHz
  • SNR : 134dB (Mono mode: 140dB)
  • THD+N : -124dB
  • Sound Color Digital Filter : 6 types

AK4497EQ

Premium High-end D/A Converter

128dB 768kHz/32-bit 2ch Premium High-end D/A Converter

AK4497EQ

The AK4497 is a premium 32-bit DAC based on AKM’s VELVET SOUND architecture, ideal for high-resolution playback. The AK4497 maximizes the performance of switched-capacitor audio DAC technology. The larger current-drive capability provided by VELVET SOUND design techniques enables greatly enhanced signal-to-noise performance.

Key Features

  • Maximum Sampling Frequency, Bit rate : PCM 768kHz/32-bit, DSD 22.4MHz
  • SNR : 128dB (Mono mode: 131dB)
  • THD+N : -116dB
  • Sound Color Digital Filter : 6 types

AK4493EQ

Premium High-end D/A Converter

123dB 768kHz/32-bit 2ch Premium High-end D/A Converter

AK4493EQ

An upgrade from 2014’s best-selling AK4490EQ, the AK4493EQ employs AKM’s VELVET SOUND audio design and manufacturing process. As with all VELVET SOUND devices, the AK4493 demonstrates excellent low-frequency noise performance, dynamics, and data integrity, leading to faithful acoustic sound expression.

Dynamic Sound Playback with Maximum Data Content

Even Higher Performance than the AKM’s Best Selling AK4490

Key Features

  • Maximum Sampling Frequency, Bit rate : PCM 768kHz/32-bit, DSD 22.4MHz
  • SNR : 123dB (Mono mode: 126dB)
  • THD+N : -113dB
  • Sound Color Digital Filter : 6 types

D/A Converters (DAC)

LINEUP

DAC: Product Portfolio

* Bubble Size = "Sound Quality"

Premium D/A Converters

Part Number Status Ch # Res. S/N THD+N * Max
 fs *
DSD Input * Sound Color * Power
Consump.
Vdd Package Notes
      bit dB dB kHz MHz   mW V    
AK4499EQ MP
4 32 134 (140 *) -124 768 22.4 6 types 667 5.0/3.3 or 1.8
HTQFP-128 VERITA
AK4497EQ MP 2 32 128 (131 *) -116 768 22.4 6 types 346 5.0/3.3 or 1.8
TQFP-64  
AK4493EQ
MP 2 32 123 (126 *) -113 768 22.4 6 types 203 5.0/3.3 or 1.8
LQFP-48  
AK4490EQ MP 2 32 120 (123 *) -112 768 11.2 5 types 145 5.0 LQFP-48  
AK4452VN MP 2 32 115/111 -107/-95 768 11.2 5 types 50 5.0/3.3 QFN-32  
AK4454VN MP 4 32 115/111 -107/-95 768 11.2 5 types 97 5.0/3.3 QFN-32  
AK4456VN MP 6 32 115/111 -107/-95 768 11.2 5 types 140 5.0/3.3 QFN-48  
AK4458VN MP 8 32 115/111 -107/-95 768 11.2 5 types 181 5.0/3.3 QFN-48  
AK4468VN MP 8 32 117/113 -107/-100 768 22.4
5 types 245
5.0/3.3 QFN-48  

[Notes]

* S/N (Mono mode)
* THD+N: Total Harmonic Distortion plus Noise
* Max fs: Maximum Sampling Frequency
* DSD: Direct Stream Digital
* Sound Color: AKM original digital filter

* Schedules of Samples and Production are subject to be changed without notice.

* The information in the datasheet is subject to be changed without notice.

A/D Converters (ADC)

LINEUP

ADC: Product Portfolio

* Bubble Size = "Sound Quality"

Premium A/D Converters

Part Number Status Ch # Res. S/N THD+N * Max fs * DSD Input * Sound Color * Power Consump. Vdd Package Notes
      bit dB dB kHz MHz   mW V    
AK5397EQ MP 2 32 127 (130 *) -108 768 3 types 455 5.0/3.3 LQFP-44  
AK5572EN MP 2 32 121 (124 *) -112 768 11.2 4 types 148 5.0 QFN-48 VERITA
AK5574EN MP 4 32 121 (127 *) -112 768 11.2 4 types 275 5.0 QFN-48 VERITA
AK5576EN MP 6 32 121 (128 *) -112 768 11.2 4 types 411 5.0 QFN-64 VERITA
AK5578EN MP 8 32 121 (130 *) -112 768 11.2 4 types 536 5.0 QFN-64 VERITA
AK5552VN MP 2 32 115 (118 *) -106 768 11.2 4 types 83 5.0 QFN-48  
AK5554VN MP 4 32 115 (121 *) -106 768 11.2 4 types 140 5.0 QFN-48  
AK5556VN MP 6 32 115 (122 *) -106 768 11.2 4 types 206 5.0 QFN-64  
AK5558VN MP 8 32 115 (124 *) -106 768 11.2 4 types 261 5.0 QFN-64  

[Notes]

* THD+N: Total Harmonic Distortion plus Noise
* Max fs: Maximum Sampling Frequency
* DSD: Direct Stream Digital
* Sound Color: AKM original digital filter

* Schedules of Samples and Production are subject to be changed without notice.

* The information in the datasheet is subject to be changed without notice.

Sample-Rate Converters (SRC)

LINEUP

SRC: Product Portfolio

* Bubble Size = "Sound Quality"

Premium SRCs

Part Number Status SRC 
Ch #
Res. DR * THD
+N *
Input fs* (FSI) Output fs* (FSO) Sound
 Color *
Vdd Package Others Notes
      bit dB dB kHz KHz   V      
AK4137EQ MP 2 32 186 -150 8 to 768 8 to 768 4 types 3.3/1.8 LQFP-48 PCM/DSD converter VERITA
AK4136VQ MP 2 32 176 -140 8 to 384 8 to 384 4 types 3.3/1.8 LQFP-48
   

[Notes]

* DR : Dynamic Range
* THD+N: Total Harmonic Distortion plus Noise
* DSD: Direct Stream Digital
* Sound Color: AKM original digital filter

* Schedules of Samples and Production are subject to be changed without notice.

* The information in the datasheet is subject to be changed without notice.

About VELVET SOUND

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 Logo™, Audio 4 Pro™ and Audio 2 Go™ are trademarks of Asahi Kasei Electronics Corporation in Japan, Europe and the United States.

velvetsound.akm.com
by ASAHI KASEI MICRODEVICES