I bought BHK 250 recently and hooked on to KEF R3.
I enjoyed the music with so much clarity and dynamic, I love it and enjoying it.
I played music from A&K SP1000 and connected to BHK250, it is fantastic.
So I wanted to add DirectStream Dac to the family to get to next level.
I have connected my DS DAC and BHK250 using RCA, while I am waiting for my RCA cable get delivered.
I used Mac as source and used USB input, I found bit noisy, I so I tried Audirvana (got to know from Pauls video) it worked well, still I hear some noise.
Then figured out how to play connect A&K to DAC unfortunately, I still hear hum noise, so I attempted to figure out the source of noise.
First step, I removed input source from BHK250 it is silent, so BHK250 is ruled out
Second, connected DAC using RCA again and turned off DAC using remote, still noise persists
Then turned off power supply switch in rear of DAC, still I hear noise - I suspected power supply cable
I swapped stock power cable with “IsoTek Evo3 Optimum”, still no luck - noise persists
Finally unplugged power supply from DAC - noiser disappeared.
So, based on my analysis, I see the noise is coming from DAC.
I don’t know what I am missing, but love to get rid of the noise to enjoy the music.
Love to hear any recommendation from @tedsmith or @Paul
Thanks for reading my experience, tiull the end.
Note: Power supply is connected directly from wall socket
RCA cable: Van Den Hul Minisub Hybrid Cable 3.0m (HALOGEN FREE)