Cusat50 for me?

Fidel,

busy time of year for many.

I do not have personal experience of either the CuSat or the mobile phone interference in respect of which you enquire.

Certainly the CuSat has received good report from a number of users whose discrimination I respect.

My only experience of mobile phone interference has been with cheap PC sound cards or more particularly onboard sound chips picking up the signal and mixing it into the sound output quite obviously.  You can hear when they "check in" and hear an incoming call before the phone rings from the incoming signal.  

I do not know if this is the type of interference to which you refer, particularly I do not think you have mentioned your source.

My better quality, semi-pro Terratec and M-Audio Firewire units do not suffer this problem and neither does the rest of my higher fi gear, either speaker based or headphone rigs.

I do use all shielded cables.

Perhaps this will help some though I am sure your experience will be more valuable.

Look forward to your findings.

ciao, T.

Fidel,

one thing does occur to me from your description above that I would suggest to possibly address your issue.

That is to use the optical cable from the PC and the Coaxial from the CDP.

This will cost nothing to try and provides complete circuit isolation from the PC.

One other cheap tweak, only applicable if you are using the SMPS with your Solo, if you have the PSU1 ignore this one.

Connect an earth wire from the grounding post on the Solo to the PC case, a single strand of CAT 6 or similar, clamp it down on the PC under one of the case screws at the back.

The ground wire is only applicable if you are using the SMPS, it drains the residual current from the case to earth, I found it to improve the NOVO noticeably.

Caveat, Graham may have now addressed this issue.

If connecting it to the PC case whilst using the optical cable to isolate seems counter intuitive, take note that connection to the PC case is merely a convenience, any piece of equipment with a mains earth connected to the case will do. (eg amplifier etc).

The object of the optical cable is to remove the possibility of parasitic waveforms travelling into the DAC and potentially corrupting the analogue signal.

It is conceded that Coax is generally the superior connection and also that Optical receiver chips often have a 96KHz limitation and cannot be used with higher resolution data.

Perhaps these two things are worth a try.

ciao,

TG