Curranwong said AP1/PP sounds the best but Al you said OR5 makes no difference....so I am confused.....
Ok round two same observation. I am in no way saying currawang is wrong as this is objective . Also different headphones may yield different views.
To my ears the Hugo sounds best with a USB connected to my iMac playing with audivarna plus. .
If I use the offramp,it's dull and makes a little dark it looses it's shine let's say.
Now with the AP1/PP. it's bright and it's tuned in pitch high . To my 57 year old ears with the hd800 being driven directly it's best with the USB HD input.
I played PCM flac sad Lisa from tea for the tillerman and also the same song in the new dsd download.
The flac is 24/192 and the dsd is dsd64.
It's so off kilt the violins sound bad and shrill a bit. And cat sound like his voice is off as well . I am not here to say I know and someone else knows less . You asked I said
I do not want feed back in this , I did this cause I was asked . Read my post from before it's the same . I am sure currawang is correct so go by his view .
For me it's best left alone and you just saved some money. Now the post link I did says it's better with it. So I must be wrong also the test was done playing each song there times .
Once with off ramp and then ap1/pl and last USB alone. To my ears it's clearly better with usb. I have not done as mr watts has said with a optical spidif .
I did try it with my ps audio PWT. the truth us the PWT stinks and does not sound good even on there ps audio DS dac. And I own this too. And the DS sounds much better to me than the Hugo. The point is it's my view . One thing for sure the Hugo is very good as is and at the selling price . One last thought the Hugo does sound very good right out of my iPhone 5 and camera adaptor . So good it really does not improve very much from a CPU . If you buy it enjoy it and be proud of it. And slow down on reading a little this place will drive you crazy even though it really is the best place to read about devices . It's just the way it goes I guess.
Good night all have fun.
Al