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

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