Hi! It's a great idea, but my family situation and location is very different compared to 10 years ago so I can probably not attend. If there is a meet and the stars align perfectly, than ... perhaps ... but can't count on it :/

  I'm on 230 V and use Gold Lion EL84 reissue and the Sovtek 12AX7LPS.

The hum is very very quiet and nothing that bothers me at all (I'm not sure I really hear it at all even when I try). It was worse with Sylvania 5751 and did bother me then, better it's much better with the Sovtek 12AX7LPS I'm using now.

For the past years I've used the HD650 for 90%+ of the time and wonder if the Bottlehead Crack would be even better than the Leben for those. Have anyone here compared the Leben to the Crack with the HD650/HD600, what do you think about it?   It's not that I'm really missing anything but I'm...

Yay finally! The amplifier has spent years tucked away, but today I took it out and reflowed all solder points in the left channel, and now it works perfectly, and sounds excellent!

Doh!It was a long time since I've read this page and saw now that there is page after page of "noise" talk without a perfect solution it seems.

Hi. I did anyone try to add a switch to change the resistor values? I have low level noise in the right channel with HD650/600 but it's completely silent with Grado RS1. The sound is excellent with the RS1 and I don't want to lose that, so I'm considering adding a switch. There is no good...

Is it possible to know which ones are mono without listening to them first? (I'm ripping them all in one go).

Thanks. I got the box today. I can't seem to resist large classical boxes on discount:)

Quote:   Does anyone have a good eu source for the 7506 headband and a cable for the magnums? Trew Audio wants $100 for shipping of the headband.

And you can add Harmony Design from Sweden. I've not heard it unfortunately.   http://www.harmonydesign.se/eng/index.php?sid=62&katID=4&prodID=23

Quote:   Thanks! Then I did it correctly.   The headphones are now as raw as can be, unfinished  non-premium wood cups, no headband and temporary cable, but the sound i'm getting already makes this a VERY promising headphone. 

Hi. I got a pair of V4 magnum drivers today. How should I solder the signal and ground? There is a small dot/mark close to one of the solder pads. Is that the solder pad for the signal or the ground?

Quote:   My 230V CS300 is also like that (ground not connected inside the amp).

My Leben CS300 is up and running again. I think the original problem was due to lose tube sockets. That problem damaged one power tube and one preamp tube. I tightened the sockets and got one new power tube (matched with the other 3) and two new preamp tubes, and now it's alive and kicking!

Quote: That happened to both my earpieces. I just glued them together with some kind of super "strongest glue known to man" glue and it works perfect. I'm not planning to every open them up again though.    

Thanks for all the suggestions.   The power tube in the leftmost socket is glowing red, and is independent on which tube is in there (have swapped the tubes around), so the problem is most likely somewhere in the amp.   This thread is probably not the right place for the rest of my...

The tubes do play music.    The problem is present with both my quads of EL84.   Unfortunately, I swapped the L and R preamp tubes, and the problem is still in the left headphone, so it's probably something else (unfortunately).

My Leben started buzzing at something like 100hz maybe. It was rather faint but easily heard. The bass boost increased the volume of the buzz. After a short while there was a rather large pop in the left headphone, so I turned the amp off. There was no source connected during this.   Can...

This is great news. I will try to attend:) Not sure what to bring yet.

Quote: + and keep a job that is well paid enough to afford the massive hi-fi and music collection. + browse head-fi <--- this one is really mind-boggling!   You must be super duper effective in everything you do in your daily life to have time for all this. I start to wonder where...

It sounds to me like the volume out of spotify is greater than from my foobar ASIO or StealthAudioPlayer. That could be an explanation for the fuller sound.    I measured the first guitar pluck from Mark Knopfler "Sailing to Philadelphia" with my sound level meter, and the pluck was about...

I had the HF2 and liked them, but not loved them.   I felt that they were a combination of both the RS1 and HD600 but inferior in the areas that the other do best. It didn't match the clarity, transparancy and fast raw tight sound of the RS1, so lost the fight when it came to rock, metal and...

Main rig Headphones: 22% Amp: 48% Source: 14% Cables: <1% Other (power etc)15%