ofiras

it should control the volume for the headphone , this is why the db number is shown with two dots, meaning that the number is related to the headphone out.

Thanks! the problem is that it's not iTunes that does the upsampling , if so i am sure that there were a kind of option that tell iTunes to disable up sampling , and i haven't found one. i guess that it's the firewire driver. inside the driver control panel there is a drop list to choose the bit rate , but i was expected to find something like : "Keep original bit rate" unfortunately there is not. so the only practical thing for my understanding is to keep the highest up sampling 192 otherwise if there is different bit rate in one playlist and i will choose manually 44.1 i will get down scale when playing a song with a higher bit rate. please confirm or correct me if i am wrong. thanks.

Another new thing that i find out (i guess it's coming from the new firewire driver and not from the new firmware) First, please if someone can clarify : if i choose in mytek UP_SAMPLING->On and play with A+ 44.1Khz file, should mytek show 192 or 44.1 because mine shows 44.1, so is it ok ? because i am expecting to see 192. and that leads to the new thing that i noticed: if i play directly from iTunes instead of A+ which before the new firewire driver worked for me only by USB. When playing the same 44.1khz file i see on mytek 192 even when the up sampling option is off. i can change this by using the firewire control panel to 44.1 and then mytek shows 44.1 . off course that it's not practical to change this manually for every song with different bit rate. if you ask why to play with iTunes and not A+? the answer is that i want sometimes to use the shared library option of iTunes and A+ can play only files that you add to to local library . so to summarise my questions: 1) is the UP SAMPLING -> ON should change the bit rate display 2) when playing directly from iTunes, is it better to keep the auto up sampling of the driver to 192 or is it better to change to 44.1 and let mytek do the up sampling thanks a lot!

if you can use the firewire, is there any reason to use USB2 ?

off course there is, you can find it in the applications folder

OK , tried the official release. Everything is working fine, noticed the bypass confirm (why?) Also tested dsd128 file . working, the device shows "HddSd" with Audirvana, but must uncheck the "use only stereo" in the preferences, otherwise the device shows 176.4 and no sound or white noise. For playing SACD iso (dsd64) must check this option otherwise i got 176.4 (with sound)

what a timing! going to try it out

I can confirm that on my MacBookPro (Core2Due 8G Ram) iOS 10.8.4 Audirvana 1.5.4 i have installed the new firewire driver, no problem. Audirnava is still functioning . The only difference that i have noticed is that in the control panel of the driver the mode become "Normal" as default instead of "Safe Mode 1" that i have got when installing the old version. I can not hear any difference on the sound. and it seems that everything (player, sac etc.) is working the same. As i understand from the previous replies, is the new driver has solved lot of issues with MS Windows and not with Mac. important NOTE: i didn't install at all the beta version of the firmware , my DAC is set with 1.7.1 out of the box. i prefer not working with beta. btw , any date for the official release?