Hello all, Its is true that a tube needs to be well adjusted to its socket. Some considerations at least may be of interest. When unplugging a tube, try to pull its straight from the socket instead of tilting it around to get it out, because it my damage the socket. People that do a lot of tube...

Hello, Well I red the same thing somewhere else. I have a strong issue with this: If you make a mistake with the headphones switch position, I am not sure it won't damage the amp. With kids around, touching things here and there, this risk with the wrong switch position is increased(well i...

Hi Haidar, Its not a clone, this is a different beast. The original leben is a point to point wire solder components, where the amp in the link is using circuit boards. So there is no way anybody can think of this as a clone, except the guy who wants to sell it. The output transformers are...

Hello all, Well, i have read so many articles praising the qualities of this amp while some may be reserved about its power, none of them mentioned flabby bass and poor resolution, therefore i am quite surprised and curious to know where you found these negatives reviews, could you by any chance...

Its an old thread but it may be that the input tube 5751/12AX7 that is closest to Input Transfo could be impacted. Some tube shielding may be used like in military equipment that would avoid any modification on the transfo and may prevent...

X version or not, these are great amplifiers I agree. There is an interresting chart on page 83 of this thread that tends to draw some components differences between the 3 versions. I noticed another transfo in the X(Limited) version i saw but its not in the 300 version, so I am not sure about...

I had the chance to do this comparison lately with a person i met who owns a cs300X with my own CS300, both equiped with RTC E84L(military grade made by Siemens) and 5751 Jan GE. It happened that we had both equiped our beloved amps with almost the same tubes.(his 5751 Jan Ge are triple mica...

@ardilla: you are right if yoy tried flipping the shucko without any effect on the hum, then polarity is not the issue i'am afraid. I started to read this lebe thread few days ago from first pages and haven't read all of them yet 146 pages. I do remember in the first pages i red that someone got...

As a Reminder,  and as a warning, please pay extra care to electricity handling. If you dont understand any of what was said, dont even try to bother, just enjoy your gear as you always had.In any case please use extra care, anytime, anywhere.   ok here it is :   Its a thread on a french...

Just the hifi stuff and whatever is plugged with it from the same socket from the wall. I have a dedicated wall socket for my hifi equipment. The main improvment was heard when the leben was correctly plugged. To tell you the truth, even though the tool i used made it obvious for the leben, i...

hello BuggleBoy,the issue i am talking about in that case is that there are no garranty that the phase is not inverted with neutral(usually ground is right).in europe and in france especially its a known fact, wheras if you use on a power supply an inverted device, it messes the whole orher...

Hello all, i am a happy leben cs300 owner i got here as a second hand for half the price for a 8 year old amp in a mint condition Sound was nice but tubes where worn out and i really got to see improvements with tube change : i use E84l 1968 siemens from ebay and mazda ecc83 Nos. But getting the...