And BTR13! Battery is nearly done on my BTR3K.

I think folk need to remember that established brands in any modern, complex consumer economy only loosely price goods based on production costs plus $n% margin. A far larger consideration is perceived brand value, perceived value of competition, and what the market will bear for a given item...

Its also weird that Sennheiser Pro would release a headphone that would appear to be in direct competition with one of its own brands headphones - the Neumann NDH30 - and with essentially the same driver… (That’s not to say I’m not happy about it though - if the new 490 Pro sounds as good as...

Decided to keep for a bit, and now decided to sell again!

Jeeez this thread has become so tedious.

Thats exactly what happened to my first BTR3K. I actually found another battery and was able to solder it in, and get another year or so out of the device. I remember that finding a suitable battery (size-wize) was very difficult. I didn't bother after the second battery died - I just bought...

Open to reasonable offers....

Well, I've enjoyed dipping my toe into the world of Fostex/planars and have been slightly beguiled by these for the last week or so. But ultimately they are not for me in the long term so if anyone in the UK is looking to try a pair, mine are up on classified :)

A pair of nearly new Fostex T50RP 50th Anniversary Edition. Bought as I'd not heard Fostex RP series headphones before, and very good they are too! Not for me in the long term though, so I'd like to pass them on. Less than two weeks old, as new and boxed (inner and outer) with all the bits...

I found it pretty easy.

To be fair that wouldn’t surprise me. I really want to like ifi as a company (as a Brit myself - British company) but honestly when I read through some of their product marketing speil sometimes it feels more like reading a Harry Potter spell book! That adapter thing you posted above is...

Thats easy, the HD650 are 300Ohm (meaning harder to drive, hence benefit the extra power balanced will give) whilst the 660s are 150Ohm (which still more than the NDH30 @ 120Ohms), and easier to drive. It’s worth while reading up on why balanced topology exists. It’s got nothing to do with...

Mmmmm interesting. They say how they don’t do it but don’t say what jiggery pokery they are using that does do it. Someone cleverer than me may well be able to explain. Have to say though that this (adapter they are peddling) feels like a solution to a problem that doesn’t exist, meanwhile...

You can’t, or should I say shouldn’t, try to connect a balanced output to a single ended pair of headphones. You can go the other way and connect a single ended output to balanced headphones. The NDH30 are internally balanced, but the cable is singled ended. If you buy (for example) a 3.5mm...

If It understand you correctly, I hate to say it but you can’t do that, it’s possible that you could damage the amp.