Hey Simon,
Whats the latest with the Elrog's ? did you get things resolved are the rectifying the tube situation?
That's a curly one, I don't know if there has been any resolution at the manufacturer level. Last I heard was that the Bases were an issue as they are inexpensive Chinese ones, and the the tolerances on them are such that the pins often do not line up precisely as they do with say a Takatsuki. I have had 3 failures with the Elrog's, all for different reasons. One lost vacuum, the other started to sputter and carry on during use (which I got a video of) and the other just died. It was suggested at that time that I was the only one having issues. Clearly that has not been the case. It has also been suggested that the sockets on the Woo's do not allow for any movement of the Tube pins thereby excabating the alignment issue with the bases and pins. The distributor here knows his stuff and he spotted the issue and we both questioned the continued use of the existing brass bases. It has been suggested that not only do the bases have a potential pin alignment issues, they also dod allow for any flex and this causes strain on the tube and therefore sooner or later leads to failure.
If anyone recall the original Elrog's had black bases and we can only hope that they return to those. I understand that one entire batch of tubes failed. I do not know if this extends to other tubes manufactured by Elrog or only the 300B.
The distributor picked up both my sets of tubes 2 weeks ago, one set was brand new unopened and the other set one had failed earlier and had been replaced by a used tube at my request so I knew it was functional. I have been told I will be receiving a refund. When I do I will let you all know. The distributor has stood behind the product and has good experience with tubes as they are also the AudioNote importer here.. This gives me confidence that these issues will get resolved however as I say nothing has been confirmed by the manufacturer officially.
This is all a disappointing episode as the Elrog's do sound good, and are very much a welcome addition to the list of new production tubes, they sound good and probably could be ta viable alternative to the Takatsuki's. However they need to get the reliability issues sorted. I understand they have been less issues in traditional 2 channel amps, probably because those guys tend not to tube roll as much as we do
. None the less the tubes should be rugged enough to withstand being handled and tube rolled by users.
I will ask the distributor if he is prepared to comment here as I know several of you have the tubes, I feel partly responsible as I talked them up, apologies to anyone having issues. I have heard several rumours re their status in the US so it would be helpful if either the manufacturer or a distributor would comment here and let us all know what is going on. There are several sonic questions to be answered also, I was told that the Elrog's had excellent bas, in my setup I find that they have the weakest bass of any new production 300B I own, they do have a lovely euphonic clarity to them and their tonal balance i best decried (again in my system) as being a little thin in the mid range. They do have the underpinnings of an excellent tube if they can get these issues sorted out.
Hope that answers the question until we get an official response. The Australian distributor is AudioNote AUS, www.audionote.com.au contact Bryan, I won't post his number here for privacy reasons.
Simon