@Andykong I recently purchased this model. It sounds great and looks great. But I can't get it to work with 32 bit PCM output under either Windows (with latest driver) or Mac (no driver needed). I reached out to you support and they claim a firmware is under development to fix this. Clearly...

https://www.etymotic.com/product/triple-flange-eartips/ The original soft and transparent tri-flange tips that come with ER3/4 give me the best comfort and sound. I am not 100% sure if it is the above linked one that says "LARGE FIT|CLEAR"? Can someone confirm if it is the same as the original...

I have the Littledot LD-Y2 300B headphone amp. And the pre-amp tubes are 6SH7, normally with metal shells. They are not expensive, about $5-$10 for a single and $10-$20 for a matched pair. Recently, I have dropped the metal shell tubes a few times to my desk while handling them. Though I can't...

Also I tried just disconnect the source, the hum was still there. So it is definitely the amp.

The amp's details can be found here: https://littledotus.com/?product=ld-y2 This is my most expensive audiophile equipment purchase. The humming sounds are driving me crazy. So I tried a few things to diagnose: 1) The hum is NOT affected by the volume knob at all. 2) The hum on the balanced...

No coupon that I knew can apply. But this is really a good price considering you are getting the official balanced cables.

Right now, even a decent OTL amp costs 2k+. :( I plan to get one of this and the headphone adapter box. I am curious if there is any downside of this setup? Seems like the sound quality is not affected. Also willsenton R300 is almost the same price with 300B. I am wondering for headphone usage...

https://us.sennheiser-hearing.com/collections/outlet/products/hd-800-s-refurbished Senn HD800s 1200 out of the door, can't beat this!

This is insane. I paid $650+tax and thought it was crazily good for the money. This is really a must-have for every head-fier. I sense maybe now the leftovers are likely openbox or refactorized? So the quality might be a bit hit and miss.

Thanks for the great advice. I am not handy with DIY, so I will buy a ready-for-listening unit now. As to Eddie Current Studio B, it is probably out of mu league for now. I was more leaning towards the 2 cheaper options. But maybe I should save up for the Cayin 300b.

I can only afford 1 of the 3 Chinese brands: 1) Little Dot LD-Y2, around $3k. This one uses Lundahl alloy input transformer. But beyond this, I can't seem to be find much information. 2) Original OPA-3A around $3k. This one uses Japanese Z11 transformer. It is also the most compact and techy...

If I don't care about MQA, is it possible to disable it altogether to make K9 more stable for PCM/DSD playback?

My budget is limited, so my time with good tube amps is mostly very short try-out. I was not very impressed when comparing them with other solid state options. Yeah, I guess I never reach that peak/optimal combination of tube and headphone. Out of curiosity, what would be a good way to try this...

Thanks. I think most TOTL headphones hover around $2-4k range. And a good transformer coupled tube amp can easily go up there. I see the point that a good tube amp can drive some dynamics really well and drive most planars sufficiently. But I think at a much lower prices point with something...

Among the TOTL headphones, many are planars and elecstats, which are known to work better with solid state in general. I could not figure out what exactly those expensive $1000+ tube amps are designed for. Maybe Senn HD800s is the only flagship that is known to pair well with them and it is also...