Ok...Your choice...I thought you wanted to bypass them! Try it as is, or modify a board and compare the two...👍
In balanced mode the opa1612 is not used... direct signal on opa1632
I will try the Sparkos balanced output stage of my DAC directly to the marked points.
Next up will be a balanced Lampizator tube stage feeding the Chip.
Next up will be a balanced Lampizator tube stage feeding the Chip.
Not a fan of tubes...Resolution killer!
Only for my guitar and Hendrixie saturation.🎸
Don't know what tubes you tried in line stage applications but there a quite a few dacs out there with tube stages that compete with the best sand based output stages in details and resolution and excell in the soundstage department.
It sounds funny, but after changing caps on power supply near MA12070 and warmig up for a 1-2 weeks the soundstage became more deeper and spacy, also sound something differs. I didn't think that caps are so listenable near D class
Panasonic FR
Next step want to try good power supply for AVDD and DVDD (ordered TPS7A4701, now there soldered something simple like 7805)
Next step want to try good power supply for AVDD and DVDD (ordered TPS7A4701, now there soldered something simple like 7805)
Cool ! Your amp therefore has a 4-brush potentiometer...
I'm suspicious, I previously owned a Sabaj A20 with balanced inputs, but the volume management was asymmetrical....The digital volume chip could not manage more than 2 asymmetrical channels...A big joke!
I'm suspicious, I previously owned a Sabaj A20 with balanced inputs, but the volume management was asymmetrical....The digital volume chip could not manage more than 2 asymmetrical channels...A big joke!
If we assume correctly implemented mute, then I would completely remove the potentiometer from input. Let the source to adjust volume.
but low quality...
Completely agree!
Volume management on My DIY amp is managed by Xmos or other digital interface, no problem pairing cabone tracks and sputtering brushes...
You just have to be careful, after installing the Xmos drivers or other, to reset the volume to a reasonable level....
Windows sets everything to full by default...🙄🙄🙄
I have the 12070 board with the yellow rca sockets like this https://www.diyaudio.com/community/threads/infineon-ma12070-class-d.347422/post-7680863
Is it a potmeter volume control or is it conected to the mcu that sets the volume in the amp chip?
Is it a potmeter volume control or is it conected to the mcu that sets the volume in the amp chip?
If you want the full potential of this board, remove the SMS capacitors, just before the chip....Read RADIAN's posts !!!
Well can’t find any measurements so difficult to assess if full potential is reached. Maybe HF noise is introdused when removing input stage?
That aside i see there is no internal volume settings exept 20/26 dB gain in the chip.
I need to be able to set volume on the board so I will need the pot.
Thanks for helping to assess the board and suggest ways to improve them and expose differential input
That aside i see there is no internal volume settings exept 20/26 dB gain in the chip.
I need to be able to set volume on the board so I will need the pot.
Thanks for helping to assess the board and suggest ways to improve them and expose differential input