Mutec MC-3+ USB

[Sharone]

For anyone owns Mutec 3+ USB, this is a tweak that you can try and it does not cost much.

After reading someone mentioned using 75ohms BNC termination plugs in t, i decide to take a try.
I ordered some termination plugs through my local electronic parts stockist, each plug not cost more than a few bucks. Other than the one I used for my 10MHz clock input from Mutec Ref10, I terminate all the rest of 7 BNC connections on Mutec 3+ USB.

After playing music from my hifi setup for 5min, I started to realise the music get slightly richer, the soundstage seems to expand and it is easier to locate the individual players compare to before. The improvement is not day and night, but substantial enough to get noticed.

This tweak does not cost me much and I guess anyone can try without breaking the bank.

Hi there Sharone,

Are you still using your Mutec usb with termination plugs successfully? I ask because last year I asked Mutec about this and this was the response I got:

"No, we not recommend to put terminator on the unused Word Clock outputs. A
terminator always strains an electrical system. I would recommend to use
simple BNC caps.

Best regards, Chris"

I'm considering trying it though anyways, as I have found that the Mutec sounds slightly better with any output unused disconnected. Perhaps Chris' response was warranty/function oriented, though I am not qualified to speculate how much electrical strain could affect the unit long term.

Thanks!

Hi bodhiFile,

Yes, I still used the termination plugs on my Mutec since Dec 2017 till now. This may be straining the circuitry, nevertheless, fingers crossed, there is no issue or whatever to date. I think no harm to give them a try and see if there is an improvement. 

In fact, I had asked someone to remove the internal power supply of Mutec 3+ USB and now it is feeding with an external Linear Power Supply and the sound quality is improved by another notch.

For my Mutec Ref 10, I used bnc caps (not termination plugs) as the clock outputs can be isolated by switching them off.