DAC AK4493 Module for Raspberry Pi I2S 32bit 384kHz DSD128

DAC AK4493 for Raspberry Pi I2S 32bit 384kHz DSD128
This module DAC for Raspberry Pi is equipped with a 32bit AKM AK4493EQ digital to analog conversion chip. It receives the I2S signal transmitted by the GPIO of the Raspberry Pi to decode and re-synchronize it. The output is then made either in RCA or in 3.5mm jack. The chip used allows the module to support high sampling rates.

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Reference : 13907
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Shipping date: 18-11-2019.

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Module DAC AK4493

Module DAC AK4493 pour Raspberry Pi I2S 32bit 384kHz DSD128

Module DAC AK4493 pour Raspberry Pi I2S 32bit 384kHz DSD128

This module DAC for Raspberry Pi is equipped with a 32bit AKM AK4493EQ digital to analog conversion chip. It receives the I2S signal transmitted by the GPIO of the Raspberry Pi to decode and re-synchronize it. The output is then made either in RCA or in 3.5mm jack. The chip used allows the module to support high sampling rates, up to 32bit 384kHz in PCM and up to DSD128. The DAC also has 6 PCM filters and 2 DSD filters to adapt the sound reproduction to your listening and system. Filters are selected using the jumper provided with the module. The rest of the circuit is also of high quality with a power management system including a Mornsun DC-DC converter and an LDOADP151AUJZ. The module output is preceded by a low distortion and low noise AOP OPA1612.

It is recommended to use Volumio or MoOde software solutions with this DAC. Then select the Hifiberry DAC driver.

The sampling rate is limited to 192kHz and DSD64 with Volumio. MoOde allows to reach 384kHz and DSD128.

The 3.5mm jack output is directly connected to the RCA output and is therefore not directly suitable for use with headphones.

Do not power your Raspberry Pi and the DAC module simultaneously as this may damage the equipment. It is sufficient to power either the Raspberry Pi or the DAC module, the power supply being shared via the GPIO.

AKM AK4493EQ

The DAC AKM AK4493 takes advantage of the proprietary Velvet Sound technology to achieve an extremely low level of distortion while providing a wide dynamic range. The AK4493EQ incorporates a new filter capacitor OSR Doubler> which is responsible for its ability to support many types of signals, limit noise and its consumption. The Velvet Sound architecture has also been improved: noise performance on low frequencies is better and a 32bit IRD filter has been integrated for detailed playback.

Module DAC AK4493 pour Raspberry Pi I2S 32bit 384kHz DSD128

Filters list

PCM Filters
FilterJ2J3J4
Sharp Roll-Off FilterXOX
Slow Roll-Off FilterOOX
Super Slow Roll-Off FilterXXO
Low Dispersion Short Delay FilterOXO
Short Delay Slow Roll-oFf FilterOXX
Short Delay Sharp Roll-Off FilterXCX
Module DAC AK4493 Filtres PCM
DSD Filters
FilterJ5
DSD_Filter1 (fc=39kHz, DSD64 mode)X
DSD_Filter2 (fc=76kHz, DSD64 mode)O

Technical characteristics

Specifications
Product typeDAC Module
DAC ChipAKM AK4493EQ
Sampling ratePCM : up to 32bit 384kHz
DSD : up to DSD128
Input1x GPIO
Output1x Stereo RCA
1x Jack 3.5mm
Niveau de sortie RCA2Vrms
General
Power supply5V DC (power supply sold separately)
Possibility to power only the Raspberry Pi, the DAC module recovers the power via the GPIO
Possibility to power only the DAC module via its 5.5/2.5mm DC jack connector, the Raspberry Pi recovers the power supply via the GPIO
Dimensions85 x 56mm
Fixation holes spacing58 x 49mm
Package1x DAC AK4493 Module
Screws and spacers
 
Data sheet
InputI2S
OutputRCA
OutputJack 3.5mm
DAC ChipAK4493EQ
Max sampling rateDSD128
Max sampling rate384kHz
Channel2 channels (Stereo)
 
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Average votes
3.0 / 5
2 reviews
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Note :
 5/5
Date :
excellent Dac
J'ai pu écouter cette carte dac en comparaison avec ma "référence" (toute relative) , un Dac Allo Boss 2 légèrement "tweaké".
Cette carte sonne déjà mieux que le Boss 2 standard (non modifié), ce qui est une bonne chose.
La dynamique et la bande passante sont très étendues, c'est parfois surprenant.

ça n'atteint pas tout à fait la richesse sonore ni surtout la sensation de sonorité relaxée de mon Boss 2 modifié, comme quoi, la puce dac seule ne fait pas tout (mais on le savait déjà).

Ceci dit, cette carte ak4493 est très prometteuse, au point que je vais certainement y travailler dans quelque temps, un peu à la façon du Taudac : désymétriseur de sortie à transformateur, sans amplificateur OP, et alimentation séparée.
Je pense qu'alors, ça sonnera encore mieux que ma Boss 2 améliorée (qui va déjà très loin, je n'ose même pas dire à quoi je l'ai comparé).


Par contre, dommage que la carte n'ait pas été conçue de telle façon qu'elle puisse être configurée via la raspberry, ça aurait permis par exemple de gérer le volume par l'ak4493, mais il aurait fallu écrire un driver.
Enfin, le plus important est que ça fonctionne, et sur moOde, je n'ai rencontré aucun pb particulier, contrairement à ce que dit le commentaire précédent (bizarre, bizarre).
 (0)
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This review has been posted for DAC AK4493 Module for Raspberry Pi I2S 32bit 384kHz DSD128
Note :
 1/5
Date :
The sound is pretty good., but has a huge problem: fade-in more than one second. Everytime.
I tried MMoode, Volumio and Rune. Same problem: fade-in for one second.
So??????
 (0)
 (0)
Message from Audiophonics service
Please try to use Picoreplayer.

This software doesnt "unlock" between tracks.
This review has been posted for DAC AK4493 Module for Raspberry Pi I2S 32bit 384kHz DSD128
 
DAC AK4493 Module for Raspberry Pi I2S 32bit 384kHz DSD128
This module DAC for Raspberry Pi is equipped with a 32bit AKM AK4493EQ digital to analog conversion chip. It receives the I2S signal transmitted by...

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