Problem with system


Last yr I purchased a Schiit Bifrost.  It worked and sounded fantastic for 5 days, then I lost dynamics and clarity.  I ordered another Bifrost  thinking it must be the dac.  But no, it still lacked dynamics, clarity.  So I sent in Bryston amp, got sent a new amp.  Still lacked detail clarity.  Sent in preamp, was told nothing wrong by Bryston.  Ordered Gungnir.    Plugged pre and Gungnir into system, still no dynamics, simply lost detail, dynamics.  Sent Gungnir back for refund.  Of course I switched out speaker wires, even ordered a cheap Cambridge integrated and Dali speakers to troubleshoot.  I tried all iteration with components. Seems to be preamp (bp6).  Anyone ever heard of a componant (in this case Bifrost dac) damaging a preamp?  I’ve been trying to resolve now for a yr. Just ordered bp19.   Thanks

 

crossfreeee

+1 @mswale - swap out 1 component at a time after making sure cables+terminations are cleaned.  I suspect preamp or speaker, but also check your ears/hearing

Another maybe harder/costlier method is find a good audio chain then swap your components in one at a time to find problem component.  

Perhaps, I missed your main system transducers.  When was last time you tightened all screws and cleaned terminals?

See above, I bought new integrated and speakers to troubleshoot.  Cables were swapped out also.  Speakers were taken to local repairman.  He hooked them up to his system and then called me to come pick them up.  He said they sounded very competent.  No issues.  Aerial says crossovers on model 6 don’t blow, but check tweeter (they sound normal on integrated to me).  Checked ohms on both connectors on each speakers, across each binding post 4 ohm if I remember correctly, complete circuit.  I took a year to go through all permutations of possible problems ( that I could think of).   Whatever is left, no matter how unlikely, is the problem. 
 

Thanks everyone for your response. 

Does this occur when cold or after the gear has been run for some time? Perhaps a faulty component exposes itself when the gear is heated up.

I own a Shiit Brfrost and have for 5 years. It still works perfect.

1. Try new quality interconnects between the the DAC and the preamp input. Optical  between the  steamer, CD, might be a good idea.

This is a big one 

2. RFI in the voltage line will wash out the digital quality. Try a cheap Furman power strip for a test. If improved, then go for power a conditioner. I suggest a tripp lite 1800w model it also compensates for low, or high voltage, noisy power which dramatically affects digital quality. My system is silent for hum or hiss at high volume.

Additional:

3. I use 10 gauge speaker wire. I got it on Amazon, oxygen free, works great for me.

All these suggestions are relatively cheap, but could make a huge difference. Each made my system sound better. Good luck.