2. analog
  3. 161172-112722

K&K Phono Preamp questions.

On the front of this unit there is a polarity + mute and - knob. Is the polarity + and - in regards to the xlr outputs? Also on the back panel, there is a switch near the xlr pin 1 ground label. Is this a ground lift switch? Any and all help and other pointers regarding this unit are more than welcome. Thank you.
128x128wturkey
noromance's avatar
noromance
9,898 posts
 
Looks like the one you have is a pretty old version. Don't know how it compares with the new full PCB-based ones.
wturkey's avatar
wturkey OP
796 posts
 
Gotcha. Thank you for the feedback. This K&K is a difference maker. As soon as the unit was fired up, it was a wow moment. Any tube recommendations from current or past owners? No idea what tubes are in this unit. They sound quite good, to these ears anyway.
slaw's avatar
slaw
21,873 posts
 
@wturkey,

My Trio uses 3 /6922 or variants. I would contact Kevin for accurate info. He actually has a blog on Audio Asylum which might be a better/quicker way to get in touch.
lewm
13,228 posts
 
Polarity flipping 180 degrees is made possible by the balanced circuitry inside.  I don't know what if anything at all it would have to do with mute or a mute switch.  Some folks believe selecting the "correct" polarity makes a big audible difference.  Others, not so much.
slaw's avatar
slaw
21,873 posts
 
@lewm ,

I don’t think the OP gave us a mirror example of how his phono looks. The link showed a blank front plate with no company logo or the switching options he talked about.

That picture leads me to believe it may have been a customer built kit?
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