I had waxed lyrically about the Mazda 12AU7 tubes I tried. It is just the best tube I’ve tried so far, but I’ve only rolled a small number of tubes.
Well I found some Jan 6189W GE tubes for next to nothing (A$20 per tube would be conisdered cheap, surely). These were manufactured in July 1986. Reading about this tube, it would appear these were manufactured with reliability, robustness, and low microphony in mind.
Bung the tubes in. They will need to burn in, I guess.
Initial impressions compared against the Mazdas.
Smooth, but a slight hardness in the upper mid-range.
Sound stage L-R is truncated compared with the Mazdas.
Stage Depth appears to be the same as the Mazdas.
Treble is more muted than the Mazdas.
Bass is slightly bloated.
Deep bass is not as deep as the Mazdas.
Dynamics appear to be lesser.
Overall I would rank the JAN 6189W above the stock Psvane tubes supplied.
I understand these tubes are plentiful. My source in Melbourne has quite a stash. Peter is reliable too. He drove across town to drop the tubes off to me personally, he said he was in the area already!
I am tempted to buy a few more of the 6189W tubes as backup to the three sets of Mazda I already have. But alas Peter does not have any Telefunken 12AU7 tubes, or at least he hadn’t been able to find any yet in what I assume to be a fairly large hoard of tubes.
Message me if you would like Peter’s contact details. I may be slow to respond as I shall be away the front half of December. Sailing to NZ and back is fun!
So the sock arrangement sounds interesting! My questions are first what about the heat that the tube puts out? If it is totally inclosed will that affect the life of the tube due to all the extra heat being contained?
Secondly, I already use the Herbies ring tube damper. Is the sock sonically an improvement.
And finally, where can I purchase them? I have been to the factory website and it was of no avail.
Thanks and I look forward to hearing from you
Phrozario, thanks for posting the website. However I have already reviewed it and I have even emailed them a few days ago but no response back. Nowhere on the website does it indicate and US dealers for the product. So sad! Either you are in business or you’re not!
Does anyone know who in the US actually sells the Tubesox?
It would be great to know that information….
Thanks guys for pushing this along. It’s all very appreciative, however I must admit that I am somewhat disappointed with ‘Ensemble’ the manufacture of the Tubesox not having a presents herein America. They do sell their main products but not the Tubesox which for me would be a ‘no-brainer’ almost an add-on for the tweakers to get excited about.
I mean we all love to tweak our systems in some way or another, right? I know I do and I find it to be a part of the hobby and fun to hear an improvement that a tweak or modification can make to the sound.
But in this case it also raises a red flag.
If the item does as they claim then why is it not here in the good old US of A?
Which is the largest market.
Something to think about…
Anyway, moving on I have just now received an email from Ensemble and this is what they have said and I quote…
Many kind thanks for your enquiry. ** We have distribution in the US for our main products, however as regards Tubesox it is best to get them direct from us. A pair is 90 dollars plus 12 dollars postage. Payable via Paypal. Best regards
So how about that???
The question I need to ask is the item in question actually worth 90 bucks?
I would be interested in those who might have used it and what they found out about it. My biggest concerned is about the Tubes getting hot and reducing the life of the tubes?
I look forward to hearing from you…
$90 seems high, but if there is a space limitation it might be the only choice. A good option for a generic recommendation is Herbie’s Audio Lab. Their dampers are good, but do protrude from the tube a bit. I have them on my BHK Pre (lots of space) and a BHK 250 (very tight). I don’t have the M1200, but my understanding is accessing the tubes is difficult so the Herbie’s may not work. Can’t offer anything more than that.
EkW, I agree with you! In fact as soon as I received my BHK Preamp I purchased the exact same tube units that went around the tubes and yes I heard an improvement so I have kept 5hem in place ever since.
But I do want to find out more about the improvement if any to what I have now……