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DAC for home system
DAC for home system
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Old 6th February 2018, 11:54 AM   #1
Pidjey is offline Pidjey
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Default DAC for home system

Good morning. I am electronic engineer with some year of experience building PCBs but this will be my first time in audio.

I am planing to build a home audio system because listening to music is one of my passions. As audio amplifier I have decided to build a TPA3244. I am not an audio expert but I think it can sound well. As audio source I want to use a bluetooth I2S source. I have though in CSR64215:

Aliexpress.com: Comprar GHXAMP CSR64215 Bluetooth 4.2 APTX ES9028 ES9038 Junta Auxiliar Para ES9018 I2S DAC Amplificador DIY DC4 6V de dac board es9018 fiable proveedores en GHXAMP Worldwide Store

I want to use separated Audio source, DAC and audio amplifier to do modifications in the future, tests, replace parts..... and I2S seems to be the best communication system nowadays. Maybe in the future I add an USB-to-I2s, a raspberry pi...

I don't know what DAC should I use. I was thinking in es9038. At this moment I prefer to use modules to avoid losing time making PCBs apart from TPA3244.

I want a recommendation of a proper DAC for my project (<$100). I also want to know a good place to buy all this components. I am buying modules from Aliexpress and components for TPA board from Mouser.
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Old 6th February 2018, 01:45 PM   #2
HaerdenC is offline HaerdenC  Belgium
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Just buy this one

SMSL AD18 80W*2 CSR A64215 DSP HIFI Bluetooth Pure Digital Audio Amplifier Optical/Coaxial USB DAC Decoder With Remote Control-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

you have everything you want in one device for 118 euro.
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Old 6th February 2018, 01:55 PM   #3
Pidjey is offline Pidjey
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Like I have said I don't want all in one. I already have hi-fi studio equipment of thousand dollars from my brother who is a professional musician. The aim of this project is to do everything with spare parts using my engineer skills. I am doing for fun. I already have experience building discrete componet AB amplifiers and guitar equipment.
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Old 6th February 2018, 02:21 PM   #4
HaerdenC is offline HaerdenC  Belgium
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But you also say you want to use modules so if I understand well you just want to solder a bunch of modules together ...
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Old 6th February 2018, 02:31 PM   #5
Samsara is offline Samsara  France
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Hello.
Quote:
Originally Posted by "Pidjey"
As audio source I want to use a bluetooth I2S source. I have though in CSR6421
Bluetooth aptX is at least 320Kbps MP3 quality, not lossless.
Next time, maybe you will find aptX Pro or (better) Sony LDAC module.
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Old 6th February 2018, 02:39 PM   #6
Pidjey is offline Pidjey
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As I said at this moment I will buy the modules because I am working on the design of TPA board. I want to test the the CSR and DAC without spending a lot of time designing and producing the modules, because I don't have that time now. As I said I want every component separated because in the future I want to test different DACs, different audio sources and different audio amplifiers provably with my own PCBs.

I don't want a fancy all-in-one solution to listen to music. I have other equipments to do that. I don't want to solder a bunch of modules together, I want to test them personally to see how good they can be for my future project after finishing the TPA. I want it to learn and have fun.
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Old 6th February 2018, 02:44 PM   #7
Pidjey is offline Pidjey
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Quote:
Originally Posted by Samsara View Post
Hello.

Bluetooth aptX is at least 320Kbps MP3 quality, not lossless.
Next time, maybe you will find aptX Pro or (better) Sony LDAC module.
Yes, thank you. I think I will have a look for CSR8670 or CSR8675 but hard to find them. I didn' know about Sony LDAC, I will read something.
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Old 6th February 2018, 03:28 PM   #8
randytsuch is online now randytsuch
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If it was me, I'd avoid bluetooth.
I'd go for a pi based system, you can buy a pi and a pi dac for less then $100.
Maybe an allo boss 1.2, but that would go a little over budget.

You can make incremental improvements by improving and separating power when you have time.
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http://randytsuch-audio.blogspot.com/2005/10/my-system.html
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Old 6th February 2018, 03:54 PM   #9
Pidjey is offline Pidjey
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allo boss looks good. I am not planing to used rpi now but maybe in the future. I think I will use amanero USB. Thank you. Is PCM5122 good? I will have a look.
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Old 6th February 2018, 04:18 PM   #10
Samsara is offline Samsara  France
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Cheap lossless is Riversong Audiocast AudioCast – Cast for audio
15,88€ for Prime Amazon RIVERSONG (TM) 2.4 G WIFI ecran Dongle HDMI Adaptateur, TV Dongle Lecteur multimedia en streaming pour Apple iPhone et telephone portable Android, Audiocast07: Amazon.fr: High-tech

It use RT5350 SoC and ES7240S DAC.
You can remove the DAC and use I2S output for your own DAC.
I don't know if it can support gapless.

Edit: i ordered it just now for delivery this 9 February, i will report about gapless.

Last edited by Samsara; 6th February 2018 at 04:22 PM.
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