Does anybody know if Ibasso are still in business ? Their web site is still operational, but they're not answering emails. I emailed last week ( using their internal form ) looking for a PB2, and still no answer, I emailed this week for a battery replacement  for a DX100, again no answer. ...

Anybody combined the PB2 with DX100 ? If so, what were your impressions?

Is there a gain using the balanced output of the Ibasso PB2 ( assuming it can be done ) if using the unbalanced input ?

Which of the 2 headphones LCD-X rated 22 ohms & 96 db or TH-900 rated 25 ohms & 100 db will sound louder at a given volume ? Or which will be easier to drive ? I know the lower the impedance the easier, and the higher the sensitivity , also  the easier, but combining both, or calculating that ...

I asked this question under another thread, and got no reply. Let me put it another way. Would 5db difference in  HP sensitivity make a noticeable difference ? Or do I have to go , let's say 10 db, or more  and that's to be used with a portable player. My 91db  headphones don't sound great with...

I just received my DX100 DAP, and I like it a lot. I got it based on many reviews here and there that it could drive the LCD-3, and I did not want a player with an amp attached. Anyway , it does drive my LCD-3  ( they're 45 ohms ) but unlike some reviews " with authority, ideal, etc...) I find...

I'm confused between getting a Sony PHA-1 or PHA-2 DAC/Amp for my Ipod Classic. My source obviously is 16/44. Now we have one DAC that can do up to 24/96 ( way more than my source ) and the other up to 24/192. I'm not interested in DSD, or  upsampling at all. Now , all things being equal, would...

Why is it that you have what I call for this topic Group A including  the HD800 and the T1 at 300 & 600 ohms, and then at the other side  Group B including  the LCD3, PS1000 and TH-900 at respectively 50, 32, and 25 ohms ?  Group A is much harder to drive, even amplified. Obviously, the...

Anybody opened the plug or the wires of the AH-D7000? How many wires get to the 1/4"  plug ( can't open it, even I saw a picture of an open one online )  is it 2 or 4  wires? I need to replace it with a 4 pin XLR , but need to know if it's got + & - for the left and the right, that reach the...

I have the Shanling PH3000, and have a background hum. I'm thinking of changing for the PH1000 . My amp is in a small space in my rack . And I have 3 questions: 1- Would the PH1000 run cooler since it has no tubes ? 2- Would the background hum disappear, since from what I read, it's caused by...

I would like to hook my headphone amp to the tape "out" of my 2 channel preamp . Is there any quality loss this way ? I was told that the Tape out is direct in the preamp, and is not affected by volume, balance or anything in the preamp. Reason I'm doing it is that I have multiple sources hooked...

Anybody tried those Eichmann Express 4 or Express 6 interconnects ? Not much info around, and can't even find their website. I got a pair of Express 4 interconnects, but my impression is that I lose treble clarity, like it seems to soften the high end frequency, so that's why I'm asking if...

Is there a technical explanation for Sony portable CD players, that the battery lasts longer with anti skip G-protection on ? I would tend to think the reverse because of memory usage, but in every manual, they rate the battery life few hours more with the protection " ON " .

Anybody who used Audio-Technica ATH-ESW9 know if they fold inward towards headband like many other brands do to increase portability? I've seen them pictured to fold flat, but still does not make them very portable ( at least to me ). I'm interested in them, but priority is portability. Thanks.