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
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
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
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
* 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
* 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
* Bubble Size = "Sound Quality"
Premium SRCs
[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