DDC - Digital USB interfaces - Xmos or Amanero Combo384 based - Raspberry Pi - HifiBerry DAC+ Pro - reviews, comparison, modifications and USB-Audio in general

[abartels]

It is based on http://www.audio-gd.com/Pro/diy/DA01/DA01EN.htm
 
Would be nice to test those in push/pull mode (4 pieces needed for stereo) and feeding with very low noise psu's. For best performance need to mod en external supply 1.8V
Could be a winner when combined with RPI/Isolator HAT/Kali or Ian's fifo II and using Lundahl output transformers
 

 

 

[b0bb]

The need for a large 10uF DC blocking cap is a significant downside. The DC will do serious damage to the expensive Lundhal transformers if not blocked.

 
The Soekris DAM is directly coupled.

 

[abartels]

  The need for a large 10uF DC blocking cap is a significant downside. The DC will do serious damage to the expensive Lundhal transformers if not blocked.

 
The Soekris DAM is directly coupled.

 
As always b0bb, you are completely right! How could I mis this

 

[musickid]

HI,
 
Do you know what kind of info shows up on mac audio midi set up with a usb to spdif convertor. ie sample and bit rate and can it be altered in the same way that a dac's settings can. especially for breeze du-u8 but in general for usb to spdif convertors. ive been told for eg some convertors have a fixed sample rate output regardless of sample rate input from usb side from computer. finally how do you know 100% that the convertor is actually inputting a coax signal into the dac as the dac does not show up in settings. or is that an obvious question ie the dac would not output any signal to the amp and you would have no sound if the coax signal was not entering the dac. i am completely new to the usb convertor world. thanks mk.

 

[abartels]

  HI,
 
Do you know what kind of info shows up on mac audio midi set up with a usb to spdif convertor. ie sample and bit rate and can it be altered in the same way that a dac's settings can. especially for breeze du-u8 but in general for usb to spdif convertors. ive been told for eg some convertors have a fixed sample rate output regardless of sample rate input from usb side from computer. finally how do you know 100% that the convertor is actually inputting a coax signal into the dac as the dac does not show up in settings. or is that an obvious question ie the dac would not output any signal to the amp and you would have no sound if the coax signal was not entering the dac. i am completely new to the usb convertor world. thanks mk.

 
Hi musickid
 
Sadly I don't have any mac's and absolutely no clue how to help you. I hope other members can!
 
 
Sorry for disappointing you
 
Regards,
Alex

 

[abartels]

Hi guys,
 
For the ones who are interested in the latest improvements on my dac, here's a review of the Burson Audio SS V5 discrete opamp.
 
http://www.head-fi.org/t/432749/the-opamp-thread/5550#post_13269881
 
 
Cheers 

 
 
Alex

 

[Paulus XII]

Can the Breeze Audio U8 amplifier drive 300 Ohm headphones?

 

[abartels]

  Can the Breeze Audio U8 amplifier drive 300 Ohm headphones?

 
Breeze U8 is not an amp but a DDC

 

[Paulus XII]

   
Breeze U8 is not an amp but a DDC

 
I know it's not an amp, but can its amp section drive 300 Ohm headphones? That's my doubt.

 

[abartels]

 

   
Breeze U8 is not an amp but a DDC

 
I know it's not an amp, but can its amp section drive 300 Ohm headphones? That's my doubt.

 
 
Not sure what you are aiming for.
 
It's  a DDC, a digital device, it's not a DAC, those don't have an amp section! It has digital input (USB) and digital output (I2S/SPDIF-coax-toslink-AES).
 
Where do you see a jackplug for connecting your headphone?

 

[WNBC]

Looks like there multiple Breeze U8 DDC configurations with headphone amp section.
 
https://www.aliexpress.com/item/The-U8-of-natural-sounds-of-a-new-generation-of-ES9018K2M-XOMS-parallel-decoding-machine-a/32721785135.html?spm=2114.01010208.3.11.lYGd7R&ws_ab_test=searchweb0_0,searchweb201602_6_10000560_10000073_10000561_10000074_10000175_10000507_10000401_10000505_10000068_10000063_10099_10000156_10096_10000569_10000097_10000094_10000090_10000091_10000147_10000144_10084_10000150_10083_10080_10000153_10082_10081_10110_10111_10112_10113_10000535_10114_10000534_10000089_10000086_10000083_10000135_10000080_10078_10079_10073_10000140_10070_10122_10123_10126_10124_10000546_10065_10068_10501_10000132_10000033_10503_10000030_10000126_10000026_10000129_10000023_10000123_432_10060_10062_10056_10055_10054_302_10059_10000120_10000020_10000117_10000013_10103_10102_10000016_10000114_10000111_10052_10053_10050_10107_10051_10106_10000621_10000384_10000101_10000100_10000579_10000104_10000045_10000578_10000108_10000612_10000613_10000390_10000042_10000592_10000039_10000587_10000036_10000389_10000187-10503_10501,searchweb201603_3,afswitch_1,ppcSwitch_5,single_sort_0_default&btsid=77e63c17-711a-41e2-b9b5-0241446f121f&algo_expid=a90a6e98-804b-48ae-9dbb-a17121ea08b9-1&algo_pvid=a90a6e98-804b-48ae-9dbb-a17121ea08b9
 
https://www.aliexpress.com/item/Breeze-audio-SUO-XMOS-U8-AK4490-asynchronous-USB-decoder-with-headphone/32651162181.html?spm=2114.01010208.3.86.7uEg7v&ws_ab_test=searchweb0_0,searchweb201602_6_10000560_10000073_10000561_10000074_10000175_10000507_10000401_10000505_10000068_10000063_10099_10000156_10096_10000569_10000097_10000094_10000090_10000091_10000147_10000144_10084_10000150_10083_10080_10000153_10082_10081_10110_10111_10112_10113_10000535_10114_10000534_10000089_10000086_10000083_10000135_10000080_10078_10079_10073_10000140_10070_10122_10123_10126_10124_10000546_10065_10068_10501_10000132_10000033_10503_10000030_10000126_10000026_10000129_10000023_10000123_432_10060_10062_10056_10055_10054_302_10059_10000120_10000020_10000117_10000013_10103_10102_10000016_10000114_10000111_10052_10053_10050_10107_10051_10106_10000621_10000384_10000101_10000100_10000579_10000104_10000045_10000578_10000108_10000612_10000613_10000390_10000042_10000592_10000039_10000587_10000036_10000389_10000187-10503_10501,searchweb201603_3,afswitch_1,ppcSwitch_5,single_sort_0_default&btsid=77e63c17-711a-41e2-b9b5-0241446f121f&algo_expid=a90a6e98-804b-48ae-9dbb-a17121ea08b9-10&algo_pvid=a90a6e98-804b-48ae-9dbb-a17121ea08b9

 

[abartels]

Aha, you are looking for a Breeze Audio DAC with a headphone section, they have U8 in their naming because of the XMOS chipset.
 
The DDC is the DU-U8.
 
So, to be specific, it's a USB-DAC with Headphone section. If you asked me that question in the beginning, it would have helped a lot.....
 
About the links you posted, the one with ES9018K2m has in it's description noted: Headphones between 16 and 600 Ohms.
For the other one there's no info.
 
 
Please ask your suppliers, they should be in the position to help you with providing more info.

 

[Paulus XII]

  Aha, you are looking for a Breeze Audio DAC with a headphone section, they have U8 in their naming because of the XMOS chipset.
 
The DDC is the DU-U8.
 
So, to be specific, it's a USB-DAC with Headphone section. If you asked me that question in the beginning, it would have helped a lot.....
 
About the links you posted, the one with ES9018K2m has in it's description noted: Headphones between 16 and 600 Ohms.
For the other one there's no info.
 
 
Please ask your suppliers, they should be in the position to help you with providing more info.

​Yes, exactly. the U8 DAC + Amp w/ XMOS. They say 16-600 Ohm, yes, but it's better to ask them

 

[hgpsemaj]

The latest from Mr. Lee:
 

 

[abartels]

  The latest from Mr. Lee:
 
 

 
Thanks for the info!