If I had to take a wild guess what IC this isolator is using, it's probably the relatively new ADuM 4165 from Analog Devices. I haven't found any isolator state outright they're using this IC but considering AD are pretty much the only company making USB isolator ICs that actually work, it'd be...
The noise is still technically there, it's just being cancelled out/suppressed by the differential mode connection (balanced). In my system, my DAC is connected to my headamp/preamp using balanced but if I connect anything to the RCA preouts I get the dreaded 8kHz USB packet noise coming through...
Analog Devices has now made a High-Speed USB version of their ADuM4160/3160 ICs. Namely, ADuM4165/3165. Now if only I knew how to make my own USB isolator using their evaluation board...
If anything the BK 5128 should be closer to how the average person hears a headphone due to its acoustic impedance being closer to that of a human compared to GRAS rigs.
I actually find the stock R70x tuning pretty ok besides being too warm. It's harman target EQs for over ear headphones that I have a problem with. Harman EQ always sounds muffled and/or like voices are coming through a walkie-talkie.
My results with crossfeed are mixed, it works well with some...
I've sort of gone down the same rabbit hole but I went with a different approach after buying some flat measuring studio monitors. I built an in-ear mic, measured my speakers left and right channels then measured my R70x L+R channels, subtracted the difference from both frequency responses then...
After listening to speakers for any amount of time, all headphones sound in my head. Surprisingly, some of my IEMs sound "wider" than my over-ear headphones.
In what sense do you mean it's difficult to detect very broad tilts? According to Floyd Toole and Sean Olive, wideband frequency response tilts are by far the easiest things to hear in blind testing. It's actually the exact opposite of what you say. Narrow Q changes are very difficult to detect...
+1 for @solderdude suggestion of reducing the 8-12kHz range. I have to apply sharp filters around 9500Hz for both my HE6se v2 and ATH-R70x to reduce S sounds. For my HE6se v2 specifically, I used a tone generator to find all the areas that are causing resonances with my ears (this will be...
Over ear headphones interact with your outer and inner ear which causes a HRTF that is unique to your head and ears. Measurements of frequency response are made on rigs that attempt to mimic an average HRTF which is not similar to any one individual. There are so many factors that affect how you...
Contrary to what random people on forums will tell you, the HE6se v2 doesn't need more than maybe 2W into 50 ohms. I can drive them on the HO200 at medium gain with plenty of volume left on the pot.
Definitely not. WHAMMY uses an op-amp input stage with MOSFET output stage not JFET input stage like the HPA-1. WHAMMY was also designed years later and from the measurements I've seen, measures much better.