Sure for 1:
From what I remember the speakers were Maggies, the preamp was from Conrad Johnson, amps were high-end Adcoms, TT was a older VPI with a high output Denon cartridge, and the computer DAC is an Ayre QB-9. I forgot the speaker wire and RCA interconnects used. For the vinyl rip a different phono-preamp was used to do the ADC, but I forgot on the details.
One big factor of the test is that when in the listening room you only see the speakers and noting else. The speaker wire is long enough that the Adcom amps and the rest of the equipment was in a different room altogether. Before starting the test my friends and I was looking at 24/96 vinyl rips that one of my friends did and all of us decide to use Kind of Blue because well everyone knows the album inside and out. The vinyl rip was done on a reissue release with the speed corrected.
So What? was used because it was the first song on side A and of course my friends and I know the song inside and out.
You have a netbook on your lap with AIM on so you can tell the person who is in the another room to start playing, change from A to B, or stop (this is to cut down talking and makes things go faster). You listen to So What? in five sessions with both the vinyl and the vinyl rip playing at the same time. Each session can take as long as you want.
The one thing about the test is that my friend who was working with the stuff in the other room will not lie to you on your answers.
For me each session was about five minutes a piece. Now since you are not in the room with the equipment (remember you are looking at speakers only) the friend in the other room can make A and B anything they want, so there's no way you know that A is always vinyl and B is always the vinyl rip. You start off listening to A and when you want to go to B AIM the guy on the netbook and few seconds later the source is changed. Want to change it back tell the guy to go back to A. When you are finish with the session tell the friend you are done.
The goal of each session is to pick which one is the vinyl. When the session is finish use AIM to tell your friend your answer. For session one I believed that A was vinyl because to my ears B was missing the richness of the piano to my ears (Bill Evans piano playing wasn't quite there on B). You will not know the answer until you are finish with the five sessions. Session two I got wrong where I choose A (the vinyl was actually B). Sessions three-five I got right.
After the five sessions I got out of the room with the speakers and talk to my friends who were waiting to do the test and I look at my scores: four right and one wrong at session two.
It's not a perfect way of doing this type of test, but I was good enough that I was able to tell which one is the vinyl and which one is the vinyl rip.
Later when some of my friends were doing the test one guy only got one right, and two got all five right.
Trust your ears.
Sounds pretty flat and the voice does not sound real at all.
Musiland Monitor 02 US > DH Labs White Lightning RCAs > Marantz 2230 receiver > Grado RS-1i
At this time I have a very good vinyl rig that I have no reason to upgrade the DAC at this time. If I get the album of where that song is from I will say 100% for sure that it will sound a lot better in analog.
Edited by HyperDuel - 9/15/10 at 4:50pm
Originally Posted by leeperry
1) we're in the science forum, please let us know about the test procedure and on what gear...I hope it wasn't on the Musiland 02US coz its OP275 opamps sound horrid.
2) when you listen to the FLAC sample I posted in the previous page, does it have "digital" written all over it to your ears? on what gear/media player/headphones?