Nagra VPS

Hi, I am using the 1k card. I never tried anything different, my dealer has a VPS and a Skala, he just set it for me and I've loved it ever since.

I do seem to flip back and forth from tube gain only to tube + SS gain. The tube only a little more transparency and beauty, with SS a little more grip. Kinda depends on the music and my mood. Both are very good. (My preamp has tons of quiet gain)

Also, if you read the manual, there is a symetrical input option. I guess it somehow floats the ground. This is something I want to try to see if it has any effect. Have either of you experiemented here?

hevac1, what are your thoughts on the 500 ohm setting with the skala? how do you think it'll change?

Thanks

Hevac 1
Not only are we the same age but we both have impeccable taste in audio...Lol.
Tried the 470 ohm card (had actually asked for 500ohm ) but it sounded a wee bit closed. Actually I am a bit concerned that I should not rush to any conclusion as there is too much thats new in my vinyl chain : new tonearm(Triplanar), new tubes in the power amp (CJ LP70S) and of course the spanking new VPS. Have also changed the arm board on the TT etc
Jfrech
Doesn't the symmetrical option work only with a balanced (XLR) cable?
The low gain is a non starter with my preamp (CJ CT5).
Cheers

Sunnyboy1956 & Jfrech

My Lyra is mono so my findings will be differant than yours.

With the 500 ohm on mine makes the sound a little tighter and the noise floor from older monos is much lower. Less surface noise and also does better if there is some groove error, the top end has less shrill.

But for mono reissues I prefer the 1000 ohm.

I have been playing with the gain and have found if the record was recorded on the hot side or to the other side, no life to the recording the no gain setting does a better job on the over all sound. Early 60's stereo albums also seem to sound better with less gain but not all, it does depend on the recording. It does cost you volume but I prefer quality of sound over volume. 45% volume for gain mode and 85% volume for no gain.

I have also found that as you change loading to a new module you should leave the module in place for few days to let it breakin and at least 1/2 an hour to warm up when swapping out. I also do this when change gain. If I shut anything off in my system I let it warmup before any critical listening is to begin.

Sunnyboy1956 you should let your system break in I would say 300+ hours before you make any final decision. As if anything is final in this hobby of ours other than spending more money. LOL

Dear friends: As you know there are two threads on almost the same subject.
I read with interest both and I can see that the Nagra owners as the people that already heard it are really satisfied ( good thing ) and reading around the Nagra ( in its website, Stereophile and other forums. ) I wonder why that " keenness ", let me to explain a little:

loking to its design and reading through JA evaluation the Nagra has some trouble with its high output impedance ( either on tube mode or SS one ) that build/produce frequency deviations ( colored the sound ) and like JA point out it needs a line stage with 100k ohms at input impedance but even with this impedance figure the Nagra is in " trouble ".
I can't understand why Nagra write in their website that the VPS is a good " mate " to the Nagra PLP where the input impedance is around 20K and where the VPS deviations/distortions will be higher: this is out of my mind and IMHO tell me between other things and with all respect to Nagra people that they don't take in count those critical quality performance subjects that are really critical in a phono stage.

Th VPS choose to use a nonbalanced design with step up transformers that add colorations/distortions and that IMHO makes more harm that help about.

But the " trouble " does not finish there but go on in the most important subject ( from my point of view ) in any phono stage: inverse RIAA eq. deviation, well the VPS is really bad on this regard and far from the recording and not only because its high RIAA frequency deviations but because ( too ) the asymetry between channels on the same subject, this means that the VPS RIAA it is not only with those high deviations but different for each channel: http://www.stereophile.com/phonopreamps/908nag/index5.html

Now, if you read MF review he point out the several and different colorations on the VPS, he is hearing what JA measures on it.

My interest is almost always to be nearest to the recording and I like to share with the people this same target and IMHO the VPS goes against it more than other phono stages out there: no, nothing is perfect.

I know that almost everyone of you ( owners ) are really satisfied with this unit and nothing wrong with that but I always like to understand what happen around an audio item comments/reviews and I like to have my feets down the earth.

So I read what you posted with those facts in mind to understand what in reallity are you saying/hearing on the VPS performance.

Regards and enjoy the music.
Raul.