Firmware updates and fixes for the new Directstream MK2

Audio Components DACs
747

Ugh, that does not sound good. I dont think people had this issue. I hope its not an issue with the DAC itself. Maybe a full factory reset then load 2.5.0

EDIT: Ted beat me to it.

748

Thanks for the input @tedsmith

I did a factory reset and tried the other I2S input. Must be something else in my system, although Iā€™ve swapped out all cables (including the speakers and their cables) The power amp is a Jeff Rowland and has dual speaker outputs and I tried the other ones. Canā€™t imagine itā€™s the power amp though just throwing a noise on DSD.

Anyway Iā€™ll keep thinking. Glad though it doesnā€™t seem to be an issue with others.

749

Maybe @jamesh can help help figure out what to do. I fear it may have to be sent back. If you swap L&R input cables on back of Rowland amp the sound should jump speakers thus eliminating speaker/amp, but if its only DSD it has to be either the streamer or DAC. Do you have a second stream by chance?

As I think about this, dosnt the DAC make everything input into DSD?

750

Itā€™s not the streamer as it happens with the PW transport playing SACDā€™s via I2S into the second I2S input as well.

Iā€™ll carry on scratching my head over this one. Donā€™t have many DSD files/SACDā€™s in any case :smiley:

751

Swapping cables from MK II to preamp? And or trying a different input of the pre?

752

@luca.pelliccioli

Yep, done that, and removed the pre from the chain altogether.
Could a defect in one channel of a power amp only become apparent on DSD? The power amp is the only thing I havenā€™t changed. I canā€™t think how this would happen, itā€™s all just volts down the speaker wireā€¦

753

Swapping left/right input on the amps would be useful to find out if you can recreate the issue on the other speaker (or if monos swapping the amps).
Itā€™s a trial and error process to exclude cables, amps and speakers. I agree itā€™s very odd if it happens only with DSD both from DAC and PST. Last chance is to try a different DAC if possible.
Good luck!

754

I did all of my MK2 testing with a Jeff Rowland 625 S2. I did not hear what you are hearing.

755

@vkennedy61 Yes I have an original 625.

@luca.pelliccioli Swapping the L/R amp inputs does not recreate the issue on the other speaker. It remains on the R one. Interestingā€¦ and the same thing happens with different speakers and speaker cables. Now I am confusedā€¦ :thinking:

2 Likes
756

Wow Iā€™m confused now too. I would normally say amp. But only DSD? How could that be?

757

This probably wonā€™t help any but there is also slightly more background noise than I would expect on non-DSD files coming out of the R speaker. Itā€™s tolerable, whilst DSD isnā€™t really listenable at all.

758

Perhaps a factory reset of the MK2 is in order. I canā€™t think of anything else at the moment.

759

Have you also an analog rig to try? To definitely exclude other than the DAC.

760

I hope notā€¦seems like going backwardsā€¦ :wink:

1 Like
761

Yes tried a factory reset a couple of times.

Listen guys youā€™ve been great (my headā€™s still hurting with the fact that swapping the input cables on the amp didnā€™t swap the issue to the other speaker)

1 Like
762

Last ditch effort if you have a different amp. and yeah my head spinning on that swapping cables thing too.

763

Yeah Iā€™ll ask @vkennedy61 if heā€™ll lend me his Rowland :laughing:

764

We are a motley group, but we try to be helpful.

765

Iā€™m sorry, did you say something? You are breaking upā€¦

1 Like
766

Though I would lend it to you once I find a pair of 735ā€™s.

1 Like