Audio D/A Converters
AKM’s audio D/A converters (DACs) provide solutions for high quality audio system with the original digital-analog mixing technology.
They are used in variety of applications such as AV receivers, set-top boxes, speaker systems, digital TVs and car-entertainment systems, contributing to the sound quality and power consumption improvements and reducing external parts.
The History of AKM's D/A Converters
Innovating DACs since 1989
AKM released their first delta-sigma D/A converter (DAC) in 1989.
The first-generation Premium audio DAC, a multi-bit device based on DWA (Data-Weighted Average) technology, followed in 1998.
The second generation was launched in 2007, beginning with AKM’s first Premium 32-bit DAC.
The VELVET SOUND brand launched in 2014, bringing with it a new generation of chip architecture.
The third-generation Premium DAC, the VERITA AK4490, employed AKM’s enhanced low-distortion technology to achieve 120dB SNR, and an industry-best voltage output performance of -112dB THD+N.
Further expanding the Premium DAC lineup, the AK445x family is available in 2-, 4-, 6-, and 8-channel configurations.
The Flagship AK4497 stereo DAC was released in 2016. AKM’s original LSI manufacturing process, optimized for high-quality audio performance, yielded even higher performance, with 128 dB SNR and -116 dB THD+N.
The AK4497 also supports high-resolution sources up to 22.4MHz DSD.
In 2019, AKM introduces the flagship VERITA AK4499, its first current-output DAC.
The AK4499 is AKM's highest-performing DAC, with 140dB SNR and -124dB THD+N.
AKM’s years of experience in the audio industry have enabled them to create advanced solutions that have been adopted by well-established companies around the world, across products ranging from consumer applications to the high-end market.
Premium High-end D/A Converter
AK4493EQ
Dynamic Sound Playback with Maximum Data Content
Even Higher Performance than the AKM’s Best Selling AK4490
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.
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
Lineup
Audio D/A Converters
Part Number |
Part Status |
Number of Channels |
Analog Output Type |
Bits [bit] |
THD+N [dB] |
S/N [dB] |
Power Supply Voltage (MIN.) [V] |
Power Supply Voltage (TYP.) [V] |
Power Supply Voltage (MAX.) [V] |
2Vrms Line Driver |
Headphone Amplifier |
Other |
Operating Temperature [℃] |
Device Package |
Number of Pins |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
▲
▼
|
AK4432VT |
MP |
2 |
Single |
32 |
-91 |
108 |
3 |
3.6 |
VELVETSOUND, Automotive grade |
-40 to 105 |
TSSOP |
16 |
|||
AK4377ECB |
MP |
2 |
Single |
32 |
-109 |
128 |
1.7 |
1.9 |
Yes |
VELVETSOUND |
-40 to 85 |
WLCSP |
36 |
||
AK4377AECB |
MP |
2 |
Single |
32 |
-107 |
125 |
1.7 |
1.9 |
Yes |
VELVETSOUND |
-40 to 85 |
WLCSP |
36 |
||
AK4490EN |
MP |
2 |
Differential |
32 |
-112 |
120(123*) |
5 |
VELVETSOUND |
-40 to 85 |
HVQFN |
48 |
||||
AK4430ET |
MP |
2 |
Single |
24 |
-91 |
104 |
3 |
3.6 |
Yes |
Ground-referenced output |
-20 to 85 |
TSSOP |
16 |
||
AK4495SEQ |
MP |
2 |
Differential |
32 |
-101 |
123/120 |
5 |
7 |
VELVETSOUND |
-40 to 85 |
LQFP |
44 |
|||
AK4490EQ |
MP |
2 |
Differential |
32 |
-112 |
120 (123*) |
5 |
VELVETSOUND |
-40 to 85 |
LQFP |
48 |
||||
AK4436VN |
MP |
6 |
Single |
32 |
-91 |
108 |
3 |
3.6 |
VELVETSOUND, Automotive grade |
-40 to 105 |
HWQFN |
32 |
|||
AK4493EQ |
MP |
2 |
Differential |
32 |
-113 |
123 (126*) |
5 |
VELVETSOUND |
-40 to 85 |
LQFP |
48 |
||||
AK4454VN |
MP |
4 |
Differential |
32 |
-107 |
115/111 |
5.0/3.3 |
VELVETSOUND, Automotive grade |
-40 to 105 |
HWQFN |
32 |
||||
AK4331ECB |
MP |
2 |
Single |
32 |
-100 |
109 |
1.7 |
1.9 |
Yes |
SRC , VELVETSOUND |
-40 to 85 |
WLCSP |
36 |
||
AK4458VN |
MP |
8 |
Differential |
32 |
-107 |
115/111 |
5.0/3.3 |
VELVETSOUND, Automotive grade |
-40 to 105 |
HVQFN |
48 |
||||
AK4497EQ |
MP |
2 |
Differential |
32 |
-116 |
128 (131*) |
5 |
VELVETSOUND |
-40 to 85 |
HTQFP |
64 |
||||
AK4495EQ |
MP |
2 |
Differential |
32 |
-101 |
123/120 |
5 |
7 |
VELVETSOUND |
-40 to 85 |
LQFP |
44 |
|||
AK4499EQ |
MP |
4 |
Differential |
32 |
-124 |
134 (140*) |
5 |
VELVETSOUND |
-40 to 85 |
HTQFP |
128 |
||||
AK4456VN |
MP |
6 |
Differential |
32 |
-107 |
115/111 |
5.0/3.3 |
VELVETSOUND, Automotive grade |
-40 to 105 |
HVQFN |
48 |
||||
AK4332ECB |
NEW |
Monaural |
Single |
32 |
-101 |
109 |
1.7 |
1.9 |
Yes |
VELVETSOUND |
-40 to 85 |
WLCSP |
30 |
||
AK4452VN |
MP |
2 |
Differential |
32 |
-107 |
115/111 |
5.0/3.3 |
VELVETSOUND, Automotive grade |
-40 to 105 |
HWQFN |
32 |
||||
AK4492ECB |
MP |
2 |
Differential |
32 |
-115 |
127 |
5.0/3.3 or 1.8 |
VELVETSOUND |
-40 to 85 |
WLCSP |
96 |
||||
AK4468VN |
NEW |
8 |
Differential |
32 |
-107 |
117/113 |
5.0/3.3 |
VELVETSOUND, Automotive grade |
-40 to 105 |
HVQFN |
48 |
||||
AK4438VN |
MP |
8 |
Single |
32 |
-91 |
108 |
3 |
3.6 |
VELVETSOUND, Automotive grade |
-40 to 105 |
HWQFN |
32 |