That's good that it makes a difference for you. I would be curious about the capacitor types and values inside, but they probably don't say.

It looks like you plug your device into the box, so yes it must have a series element. Igor's boxes have no socket, they just plug into the wall and affect anything on the same circuit, and to some extent other circuits as well because they reduce noise getting carried into the panel. What other...

I've gotten a lot of benefit to my system by using parallel capacitive power conditioning. The product I use isn't made any more, but I thought I would describe it and maybe some others would know about something similar. Power conditioning by parallel capacitance is based on the idea that...

I'm wondering if the Denafrips Iris, pre-12th, I2S output pin configuration matches Gustard, so that I can run an HDMI cable from the Iris to the R26. Would like to know before I actually buy an Iris to try. Right now I have the Gustard U18 DDC and that works. I read online that the Hermes DDC...

I'm using an Aurender N100. It's not capable of DSP. I did some sweeps and sine tones around 800 Hz and 2500 Hz sound like they are stimulating the tinnitus in my left ear. They sound more natural in my right ear. It makes sense that a matching tone would stimulate the tinnitus, but what's odd...

I recently obtained a 2021 LCD-X from an open box sale and listened. Previously I had a 2011 LCD-2. My first impression of the LCD-X was that it was closed-in compared to my LCD-2, but had better bass. A long time ago I reverse-flexed the headband on my LCD-2 to loosen it up (I can't take the...

Shipped fast, in good condition, and exchanged helpful comments on the sound. Highly recommended!

I'm interested in getting an iFi Zen DAC V2 or V2 Signature. I have an old iDSD Nano (not Black Label) which a very talented technician modified and created a super HQ 5V LPS for, and it's a very high performer. Very musical and good extension/resolution. (Not stellar, but good for the money -...

Powervar ABC1200-11 power conditioner as often used in professional audio/video or medical applications. It contains an isolation transformer and surge suppression and is rated at 1440 watts (120VAC/12AMP) so definitely capable of handling speaker power amps as well as the rest of your system...

@gregorio Thanks for emphasizing seeing a doctor. I'll do that. When I say "the problem could be in my DAC" what I mean is that, because not all equipment triggers the resonance equally, it would be nice to find some equipment that doesn't trigger it yet still sounds good to me. I might need to...

I've got a strange problem which was noticeable in the past, but became really noticeable with a couple of DACs I tried recently (a Gustard x20pro and a Gustard R26). When I listen through headphones, there's a resonance in my left ear around 500 Hz. For example, if I play piano tones from a...

Okay, so I've been listening with a NOS "Radiotechnique" French military 12AU7, cryo'd, I got from Upscale Audio. It has a softer treble. Maybe even a little brighter than the Clear Top, but smoother and without that sense of peakiness. By the way, it's not that the LCD-2 is "bright", but...

I thought of one other possible factor.. I use RCA Clear Top 12AU7's in both of my headphone amps. I dropped another brand in there and the tonal balance changed a lot. I'll look into it.

I hear it with an iFi Zen Stream as well. And I've tried several configurations of a NUC driving the Gustard DAC. The general pattern is that whenever my USB transport improves in quality, I get more extension and life in the treble, and that extra treble energy seems to have some peakiness to...

I just upgraded my Win 11/Foobar2000 computer to a dedicated streamer/server, an Aurender N100. I'm finding that I might like to EQ some files for use with my headphones (I have many headphones). But an Aurender has no playback options at all, and I don't see a way to EQ things. In fact, the...