Hi Coen,

I tried the same after your post but lowered the voltages step by step. It was counterproductive to lower the RAM voltage which leads very quick to instability. I found the same changes to SQ as you did and the system is stable.

Georg

NOS:amp

I ordered a Clairixa cable made of one of remaining cable pieces and got not less than I expected - a reference cable! After readjusting all parameters of the USB interfaces I could use the SQ parameters for he first time as written in my forum profile without clicks. Apparently transmission errors are gone  and another curtain is drawn from the music! There is a rock stable positioning of the instruments, a lot of details, all around coherency and last but not least the bass SQ. Well done Peter!

Georg

I'm using since 1980 the Micro Seiki MR-711 player until tody with changing cartridges and phono stages. Neither the cartrides nor the phono stages have exceeded the 600$ limit ...

There is no doubt that the sonic quality of XXHighend with NOS DAC's is by far better, in every aspect.

I look at the analogue system as a beloved oldtimer with a lot of vinyl based music that is not available anymore. It's more the the heart than the brain that is counting.

I tried a lot to digitize the music but was not satisfied with the results. There is the time aspect too - digitizing 9000 LP's would be a lot of work. I will leave the music on the medium where it belongs to.

What I can confirm too is the need of a really good cleaning - I do it with a DIY ultrasonic cleaning device.

Georg

Hi Peter, hi Joachim,

in contrast to the piano - where the hammer is damping the vibrations of the strings - the basic wave and harmonics at the harpsichord can move freely. Addionally the strings are - depending on construction - picked sharply.

Georg

Intermediate results using the aircell-7 cable: I gave the cable 70 hours burn in connected to an old CD player using a sequence of different music pieces, pink noise and white noise in endless loop. So hopefully it was burned in.

The cable is partly for the better and partly not. I'm not shure yet if I will like it. Some impressions:

There is a wider sweetspot
There is a bigger room
Mid bass and lower bass are a lot better - drums and string bass benefit from it.
The high frequency area shines, is not agressive but snappy too if necessary (cymbals).

I'm not happy with the midrange yet. Female voices sound well but male voices got some hush tone.
The big band is not always an orchestra but sometimes a conglomeration of instruments.

What's next?

New positioning of the loudspeakers
Trying an Aircell-5 cable additionally which has got a solid OFC core  http://www.ssb.de/pdfs/Aircell_5.pdf
Listen to the music 

It's a new and fresh experience and as Peter said it's only the beginning ...

Georg
   
 

Hope 93 ohm will match the NOS1a ...

Georg

I will try the Aircell-7 cable www.ssb.de/pdfs/6070_Aircell 7_en.pdf, because it's build from OFC copper. The cable manufacturer is manufacturing the 50 Ohm connectors too.

Georg

Hi Coen,

just another aspect is discussed hier: http://www.ecnmag.com/articles/2012/12/differential-signaling-best-practices

Especially the line-to-line impedance imbalance and transmission line lengths seem to be interesting.


Georg

Yo

Yo

Was it the change to summer time or is it the actual pollen level or was it wind-energy from the mains supply - this evening was sonically fantastic! XXHighend on Windows 8 went at top and I will not miss Windows 7 again.

Georg

Tweak the tweak and we will have fun even in the future  

Georg

Hi Nick,

very interesting point. I remember to a good friend of mine who has been an enthusiastic shortwave amateur who build his tube receivers by himself. And one very critical aspect was the frequency normal which was actively heated to a specific temperature for stability. The systems needs to heat up for over an hour for good stability. Do you think that temperature will influence the synchronization? Could it be possible that here is a reason for different SQ at various days?

Georg

Wow, what a nice cookbook! There will be a lot of changes in electronics and my house 

Georg