Unidentifiable popping sound


Not 100% sure it goes in this forum — apologies if there is a better place.

For 6 months now, something in my system is making a clicking/popping sound. It usually happens 15 minutes after I power things up, or about 10 minutes after I power them down. It can also happen spontaneously when everything is technically on standby. I actually have a recording of it, but not sure how to upload here. Any ideas?

Preamp — Nagra Jazz (possible) (it happened with both old and brand new tubes)
Amp — Nagra Classic Amp (possible)
DAC/Source — PS Audio Directstream (possible)
Phono stage — Pure Audio LV-1 (probably not)
TT — Clearaudio Concept (definitely not that)
Cables — Luna Orange (also, definitely not that)
 

128x128andbaron

Showing 2 responses by andbaron

@fuzztone good call. will try that.
@audioquest4life Nagra is very, very good at QC and it happened with both the tubes that came with the Jazz (picked it up pre-owned), and with new ones I got directly from Nagra. If it is the preamp, I'm not sure it's the tubes (but anything is possible at this point!).

Thanks so much for the replies everybody. Lots of good thoughts and suggestions for me to experiment with here (and some solid jokes). @wolverine1 I'm really curious to see if this is the same sound you heard with the bridge. Is there any way I could fling this recording I made over to you to see if its a match?

@reubent it's definitely coming from something electronic, it's not from or through the speakers.