The Bottlehead forums are very helpful. The Crack specific forum is likely your best resource.

I like this amp/DAC, but I have this issue - static/popping noise - with it. The first unit I purchased Hifiman replaced on my complaint about this problem, but the replacement unit does behaves the same way. The issue has only shown up for me in NOS mode playing 16/44.1 files, and then not all...

I got a pair of HE-6SE V2 Adorama Edition from Adorama. I'm having some challenges with them. They sound less than great. I have a broad range of kit - headphones, amps, DACs, amp/DACs (as well as two-channel speaker gear). No bass, sucked out midrange, flat dynamics, flat harmonics. I have...

I'm curious about the EF400 for this very same reason - something to do a good job/sound good with my HE6-SE V2s. I have several powerful headphone amps, but the HE-6SE V2s sound flat and thin with all of them. I've been heading to the direction of using a speaker amp, but maybe the EF400 is the...

Hello... PM... Thanks.

My much enjoyed Resonessence Herus DSD DXD just went on the fritz. No longer making lovely sounding music, but only now a loud fixed pitch tone from the left channel and nothing from the right. I really like the little Herus. As many may already know Resonessence closed its doors sometime last...

Herus DSD DXD down! I hadn't used it in a while. It was plugged into an RPi 4B RoPieee XL Roon Bridge along with a Meridian Explorer2 (kinda cool and useful, Roon sees these as two separately accessible zones). I decided to plug into the Herus and got nothing but a loud constant tone in the left...

Thanks. This is much more comprehensive and interesting than my question about only the power supply. Concerning just the power supply, the person doing the exploration preferred a battery supply. I was also curious about the energizer. This thread describes tweaking the existing energizer...

I have a question about volume control settings for the Concero HP DSD DXD in different pieces of software. I'm using a bunch of different programs (I'm not expecting to keep all these, but exploring and learning for now) - Tidal, Qobuz, Roon (plus RoPieee, sometimes), JRiver...

Interesting... "Arya per se: at about 1800 Hz need a quick 2.5 db rise from 1600-2100 (only .5 db at the outside edges of the range) Hz to avoid hollow mids. Also needs a quick down 2-3 db around 5k (4700-5400) less at the edges - see parametric EQ's and Q settings." And, "Also irrespective of...

I have a question about using an alternative power supply with this amplifier, replacing the brick with a higher-quality power supply. Anyone done this? Better? Worse? Same? I recognize the importance of power supply design. I've had the experience of swapping a wallwart for a higher...

I came here to ask something just like this. Has anyone used the ESP/95X (the Drop one, in my case) with an alternate power supply? I was considering replacing the wallwart with a high-quality supply, but I'd be curious too about whether a battery supply might make a performance difference (for...

Yeah, just responding to this now... I'm good with not as tube'ish. My experience informs me that tubes and transistors (or op amps) can sound any which way, though there may be more typical characteristics of each. The Audio Research, Sonic Fronitiers, and later C-J tubed gear I had (and I...

Interesting. Do tell. Which stage did you get rid of and how did you do it??

Yes, and same here. That irritating ticking noise, or worse, can sometimes be cleared up by restarting a track, or switching to another track, then back again. These few tracks I can't get to clear up. I kinda feel that just a little while ago, after I had initially set up the RPi/Roon/RoPieee...

Any Resonessence'ers out there...? I have a Herus DSD DXD and a Concero HP DSD DXD (2.7 version firmware). Love them... ...99% of the time. These devices have been the most finicky of all the audio devices I've used in that they are they are the most prone to noise of any device I've used...

Thanks. I wasn't entirely clear from the manual. It covers the three Concero models. I'll double-check the manual. I do have the Apple remote.

Does anyone have the USB -> S/PDIF bridge configuration tool for the Concero HP? Did Resonessence ship one?

Yeah, I've been very happy with Massdrop/Drop. Most of my headphone journey has been supplied by them. Exceptional value. On the rare occasion I've had any issue, they've made it right, and then some.

Yes, and yes. I have the Senn 6XX (I also have the original 580 Precision and 58X Jubilee) and the AEON Open X. I like the 6XX, but (mostly) only love them used with my Bottlehead Crack. That combo is just so much fun. The Aeons are a step up in every sonic area and they tend to pair well with a...

That fake webpage thing is wacky. Who? Why? Is there a way to determine the firmware version that's currently installed? Yes, bricking wouldn't be great. Might you happen to have the latest/final firmware update?

Too bad Resonessence is no longer in business. I have a Herus DSD DXD and a Concero HP DSD DXD and very much enjoy both of them. Does anyone have the final update (v2.8?) for the Concero HP that they could share? Thanks!

I got mine from Vinshine. The purchase experience was excellent. Alvin was great. The Ares II is great. Amazing the performance that can be had for the money today. It wasn't always like this. Kudos, too, to Apos Audio. Got an SMSL SP200 THX AAA-888 from them. Another excellent purchase and...

Okay, I've gone and bought a S.E.X + C4S - and a little Bottlehead badge.