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All for the ultimate Real Live Sound

lead a new era of High-resolution audio

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.

FEATURED PRODUCTS

VERITA AK4499EQ

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.
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

Supporting High Resolution Data

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 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

AKM’s Best Performance D/A Converter

Supporting High Resolution Data

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

As an upgrade from the best-selling AK4490EQ, which has been adopted by many high-end audio products since the launched in 2014, AKM, has developed the AK4493EQ, a premium high-end D/A converter.  The AK4493EQ uses an improved VELVET SOUND architecture, optimizing the circuit design.  It also employs AKM’s original dedicated audio process.  This process has improved electric margin, low frequency noise performance, and the original acoustic sound expression that can be found in the sound strength and the data amount.

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

Even Higher Performance than the AKM’s Best Selling DAC, the AK4490

Supporting High Resolution Data

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)

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DAC: Product Portfolio

* Bubble Size = "Sound Quality"

Premium D/A Converters

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

[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)

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DAC: Product Portfolio

* Bubble Size = "Sound Quality"

Premium A/D Converters

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

[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)

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DAC: Product Portfolio

* Bubble Size = "Sound Quality"

Premium SRCs

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

[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