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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
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Old 10th May 2018, 12:26 PM   #291
soundcheck is offline soundcheck  Germany
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Don't forget turning of the Bluetooth, HDMI and LEDs as well.
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Old 14th May 2018, 01:17 AM   #292
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Default OPPO Sonic ES9038Pro DAC, my reference of test

OPPO Sonic DAC has ESS flagship 32-bit HyperStream DAC chip ES9038Pro. And it's also a fully balanced design. That are the reasons I choose this DAC as the reference of my test.

OPPO Sonica DAC

OPPO has some pretty decent audio products at reasonable price. But it's too bad that all of them have been discontinued recently. I think audiophile grad gears don't make enough money for them. And now, they would focus on cell phone business only.

Click the image to open in full size.
OppoSonicDAC2
by Ian, on Flickr

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Last edited by iancanada; 14th May 2018 at 01:24 AM.
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Old 14th May 2018, 10:05 AM   #293
ofswitched is offline ofswitched  Taiwan
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Quote:
Originally Posted by iancanada View Post
I like PASS stuffs. Nelson was a diyer, his amplifiers is more close to our audiophile's taste. I like the nature sound style.

I have a Krell 250 too. It's powerful and with beautiful high range, but just not as nature as X350.5. I use it for my Dolby Atmos theater now.

I built a Pass Aleph 5 clone many years ago, but the sound was not as good as X series. I had some good deal for used Pass amplifiers in Canada and USA. Yes, they are too expensive for brand new.

Regards,
Ian
Can you introduce your Dolby Atmos theater?

My Dolby Atmos theater is marantz av8802a and ToneWinner AD-8P (Chinese brand)
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Old 15th May 2018, 03:29 AM   #294
ofswitched is offline ofswitched  Taiwan
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Quote:
Originally Posted by iancanada View Post
OPPO Sonic DAC has ESS flagship 32-bit HyperStream DAC chip ES9038Pro. And it's also a fully balanced design. That are the reasons I choose this DAC as the reference of my test.

OPPO Sonica DAC

OPPO has some pretty decent audio products at reasonable price. But it's too bad that all of them have been discontinued recently. I think audiophile grad gears don't make enough money for them. And now, they would focus on cell phone business only.

Click the image to open in full size.
OppoSonicDAC2
by Ian, on Flickr

Ian
In below $3,000, you should consider L.K.S Audio MH-DA004. Although, MH-DA004 is a unnecessary double-ess9038 design. MH-DA004 may only be using CCHD-957 so that it is much much better than OPPO Sonica DAC. It is not surprising that OPPO Sonica DAC exits the market.

Amazon.com: L.K.S Audio MH-DA004 Dual ES9038pro Flagship DAC DSD Input Coaxial BNC AES EBU for DoP USB I2S Optical Audio Decoder (Black Upgraded USB Version): Electronics
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Old 16th May 2018, 02:37 AM   #295
Greg Stewart is offline Greg Stewart  United States
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
After a busy couple of weeks, I'm back at home and able to spend some time on my audio projects. First up was changing the trim cap on my 2 current transformer output setups for Ian's ES9028Q2M DAC card from 470pF to 1000pF. That moved the sound into the 'just right' range. I suspect I personally might prefer the sound at 1200pF or even 1500pF, but I bet most will like it just as I'm hearing it now.

With the 1000pF on the Onetics transformers, I'm really enjoying the sound on a variety of recordings. While this setup MAY lack a tiny bit of the ultimate in dynamics, impact, and slam compared to my other reference RPi DAC, my HotRod Dial, it still satisfies in those areas and is VERY good in vocal naturalness, detailing, layering, and composure during complex passages.

Still a bunch of things to try... LL1570XL with 1000pF, LL1684's, sync mode, DAC settings including filters & DPLL bandwidth, some active I/V stages, using multiple LT3042 regulator boards (once those devices in that package are again available... not only are Digikey and Mouser out, but even AD/Linear has them on B/O!), etc. BUT I'm really grooving what I'm hearing now & don't feel much motivation to do anything but listen!

Ian, again, I'm very excited by your development of a combo isolator / FIFO / DOP-converter card. AND I think using the Sonica as a comparison reference is appropriate. I need to get my Twisted Pear Buffalo IIIPro setups running for a similar comparison.

Greg in Mississippi

P.S. Ian, while my systems are not at the same level as yours, I believe they are near and still very revealing and useful in auditioning various configurations and options on your RPi setups. This system includes a PS Audio BHK-250 amp, Eminent Technology LFT-VIII speakers (with upgraded mid/tweeter crossovers), and a S&B TX102 volume control. There's a bunch of tweaks and mods, with all of the LMS music server gear and related network gear powered by DIY'd linear supplies and the core audio components fed from a PS Audio P10 AC regenerator. My 2nd system is very similar, though it is configured to be a bit more close-in, revealing perspective while this one is in a larger room with significant room treatment and provides a more natural sense of space. More details available via PM or email, if desired.
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Last edited by Greg Stewart; 16th May 2018 at 02:42 AM.
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Old 16th May 2018, 05:18 PM   #296
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Quote:
Originally Posted by Greg Stewart View Post
After a busy couple of weeks, I'm back at home and able to spend some time on my audio projects. First up was changing the trim cap on my 2 current transformer output setups for Ian's ES9028Q2M DAC card from 470pF to 1000pF. That moved the sound into the 'just right' range. I suspect I personally might prefer the sound at 1200pF or even 1500pF, but I bet most will like it just as I'm hearing it now.

With the 1000pF on the Onetics transformers, I'm really enjoying the sound on a variety of recordings. While this setup MAY lack a tiny bit of the ultimate in dynamics, impact, and slam compared to my other reference RPi DAC, my HotRod Dial, it still satisfies in those areas and is VERY good in vocal naturalness, detailing, layering, and composure during complex passages.

Still a bunch of things to try... LL1570XL with 1000pF, LL1684's, sync mode, DAC settings including filters & DPLL bandwidth, some active I/V stages, using multiple LT3042 regulator boards (once those devices in that package are again available... not only are Digikey and Mouser out, but even AD/Linear has them on B/O!), etc. BUT I'm really grooving what I'm hearing now & don't feel much motivation to do anything but listen!

Ian, again, I'm very excited by your development of a combo isolator / FIFO / DOP-converter card. AND I think using the Sonica as a comparison reference is appropriate. I need to get my Twisted Pear Buffalo IIIPro setups running for a similar comparison.

Greg in Mississippi

P.S. Ian, while my systems are not at the same level as yours, I believe they are near and still very revealing and useful in auditioning various configurations and options on your RPi setups. This system includes a PS Audio BHK-250 amp, Eminent Technology LFT-VIII speakers (with upgraded mid/tweeter crossovers), and a S&B TX102 volume control. There's a bunch of tweaks and mods, with all of the LMS music server gear and related network gear powered by DIY'd linear supplies and the core audio components fed from a PS Audio P10 AC regenerator. My 2nd system is very similar, though it is configured to be a bit more close-in, revealing perspective while this one is in a larger room with significant room treatment and provides a more natural sense of space. More details available via PM or email, if desired.
Hi Greg,

Good to know you are back for your audio project now. Looking forward to your progress.

I was very busy too in the last weeks for some FDA applications. I did the listening test on the weekend with some interesting results. I'll post the update very soon after some organizing.

Regards,
Ian
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Old 19th May 2018, 04:23 AM   #297
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Default New RPi I2S adapter

I designed a new RPi I2S adapter.

Besides the u.fl I2S connectors, it also has:

1. External ESS controller connector.
With this connector, it can be easily connected as external controller through a standard FFC/FPC cable. So the controller can be mounted to the panel for some applications.

2. I2C connector
For external ESS DAC control.

3. +5V connector
Ready for power Pi from GPIO

Click the image to open in full size.
NewRpiI2SAdapter1
by Ian, on Flickr

Ian

Last edited by iancanada; 19th May 2018 at 04:44 AM.
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Old 19th May 2018, 04:32 AM   #298
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Default External controller for my ES9038Q2M DAC HAT

The new adapter makes it much easier to become an external controller for my ES9038Q2M DAC HAT. Or, my ES9028Q2M DAC HAT.

Only a standard 10P FFC/FPC cable is needed. The configuration is very clean.

Click the image to open in full size.
NewRpiI2SAdapter2
by Ian, on Flickr
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Old 19th May 2018, 04:43 AM   #299
iancanada is offline iancanada  Canada
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ES9018K2M, ES9028Q2M, 9038Q2M DSD/I2S DAC HATs for Raspberry Pi
Default Isolated external controller is highly recommended.

As always, I'm highly recommended to plug this adapter into the non-isolated GPIO of IsolatorPi, while the DAC HAT into the isolated GPIO. In this case, the external controller becomes 100% isolated from the DAC HAT. I call it "ghost controller " in this case.

Click the image to open in full size.
NewRpiI2SAdapter3
by Ian, on Flickr

Last edited by iancanada; 19th May 2018 at 04:45 AM.
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Old 19th May 2018, 05:33 AM   #300
diyaudnut is offline diyaudnut  United States
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looks great.
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