Maybe sibilance is what I am hearing and I'm just doing a poor job of describing it. It's kind of this "un-naturesness" that, to me, sounds like ringing/vibrato/sibilance. Do you have any songs with very clear and obvious examples of sibilance that I can compare to?

@Sennheiser, thanks again for your help, it really provides a peace of mind!

@Sennheiser, thanks a lot for reaching out to me!   1) & 2) Nope, the ringing is not throughout the song. It usually occurs during vocals as a singer is holding a long note or belting out a loud note, but I don't think it's a natural vibrato. I want to say that it's usually only certain notes...

I've had the HD800 for about 1-2 months now, only other headphone is the HD 650. Running it out of Modi 1 (will upgrade to Modi MM one day) > BHC Crack + Speedball.    I didn't really notice the 6 Khz peak until I began to read about it, which prompted me to notice it more. Since then, I've...

I've been playing around with Equalizer Apo to tame down the 6KHz peak and it sounds pretty good. Do you guys dial it down at 6000 Hz exactly, or do you guys dial it down at 6500 Hz, which is where the peak seems to be from online FR charts?   Also, what is the difference between Sonarworks...

Would someone mind sharing their Equalizer APO settings?

What are the HD800 stock ear pads made from? Some sites say it's Alcantara, while others say it's microfiber. Are they the same thing?

I have a Windows 10 laptop and listen to music via Spotify Premium and Foobar2000. Do you recommend a software that provides system-wide EQ or individual plug-ins separately for Spotify and foobar? Any recommendations?

Not that I'm looking to purchase another pair of HPs, does anyone also own an LCD 2/X/3/4 and overall prefer the HD 800 to the LCDs? I understand that they're very different headphones in terms of sound signature and obviously different in prices, but it seems like most reviews I've read so far...

Thanks. Per your guys' advice, I'll upgrade to the Modi Multibit when I get a chance. Also, the first thing I noticed with the HD 800 was that I was able to hear the treble roll off of the tube amps a bit better. With the HD 650, the tube roll off seemed rather natural as it matched the...

Just picked up the HD 800. Wow you guys were right. Haven't put too much time into them yet, but in terms of initial impressions, it does seem that the HD 650 sounds more involving and "euphonious." The HD 800 does seem more clinical, but the wider soundstage seems to do a better job of drawing...

Thanks for the advice; the Modi Multibit is indeed something I was planning to get in the near future. But strictly in terms of the amp (BHC + Speedball), even though it's not ideal, will it still drive the HD 800 decently well such that I'll notice an improvement over the HD 650 (which is...

I'm currently using Modi 1 > Bottlehead Crack + Speedball > HD 650 and am thinking of picking up a used HD 800.   I do prefer more of an "analytical" listening experience with more details in the treble and vocal range frequencies. I picked up a Grado SR80 and have been using it with a Modi 1...

  Thanks, you guys have convinced me to upgrade to the Mimby.    Dumb question, with either the Modi or Bifrost, it shouldn't matter how they are physically oriented on the desk right? I don't have enough room on my desk to place them flat, but I can stand them up perpendicular (so that the...

  Thanks for the answer. So even going from the first-gen Modi to the Modi multibit would yield a noticeable difference?   Could you explain how exactly that SQ will change? Will the soundstage open up for ex?

I currently have a first-gen Modi 1 > Valhalla 2/Bottlehead Crack + SB > HD 650.   I'm thinking of upgrading the DAC to a Bifrost and want to explore used options via Craigslist. Could someone explain the numerous versions of the Bifrost? I know there's a first-gen and second-gen Bifrost, and...

How loud of a volume do you guys use when comparing amps? Does the DAC have an impact on how loud you need to turn your amp?   I have a Modi 1 > BHC + SB > HD 650 and listen to music with the knob at 9 o'clock. 

Does anyone's Valhalla 2 have ringing in some of the low treble notes?   I'm running Modi 1 > Valhalla 2 > HD 650. I'm at about 30 hours burn-in on the Vally 2. In some of the low trebles (maybe higher pitched male voices, or female voices) I hear almost this vibratory sibilance and it sounds...

Is it worth upgrading the amp past the Bottlehead Crack + Speedball for the HD 650? i.e., are there more expensive amps out there that will pretty much best the BHC + SB in every way when paired with the HD 650?   At that point, would money be better spent upgrading to a different headphone?

Thanks for the very informative post! Any chance you have photos of your modded HPs?

Yeah that's what I was thinking. The "factory sealed" tape on the outer box was intact, but the sticker on the plastic bag holding the actual amp was broken already. I guess I'd have to ship it back to Amazon for an exchange? i.e, they wouldn't be able to just send me the rubber feet right?   ...

For those with a Valhalla 2, do you use hi or low gain setting with the HD 650? The low gain setting can drive mine to adequately loud levels, but I feel like it sounds better on hi gain. Anyone else notice this, or is this just placebo?   It seems like the majority of owners on this thread...

Should the Valhalla 2 come with 4 rubber feet for the bottom? Just purchased one from Amazon and it didnt come with rubber feet. It had some large splotches of glue residue on the bottom instead. 

I'm looking to connect a Modi 1 to a Valhalla 2.   Will the 6" PYST red RCA cables from Schiit be long enough to connect them side by side?   Otherwise, can anyone recommend the cheapest, high-quality RCA cables that would be long enough to connect a Valhalla 2 to a Modi?

How does the Valhalla 1 compare with the Valhalla 2 for this headphone? I can't seem to find any direct comparisons online.