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CIFTE's (mazda) tubes to try in a Rogue hybrid amp. Vintage 1962. Cool.
"A lie is half-way around the world before the truth can get its boots on."
-Mark Twain
Edits: 06/25/15Follow Ups:
Opus 33 1/3
I snagged one of those in a large lot of 12AU7's recently. They are pretty hard to come by!
Mr. Deal's write up on them is classic Kevin. Mine are a few seasons old and are in the "money spot". They were in the last amp which only required 2. This one takes 6(not Mazda).A quick check and it's nice to see they're in the "reasonable?" price range.
YMMV as most things, I haven't heard super premium$$ equivalents.
At least comparing them to generic(but fine) Chinese and some late 50's
black plate RCA's, they do seem to have a more clarity across the board in my rig.
Edits: 06/25/15 06/25/15
I have a lot of good 12AU7s -mainly Amperex- but I am always curious to know what a tube I don't have sounds like. I know describing sound is hard but would you kindly try. Thanks
Steve
I know describing sound is hard but would you kindly try.
You're not kidding. Audio is so subjetive.
My experience is just with 3 NOS tubes.
50ish Raytheon blackplate
50ish RCA blackplate
Mazda
Referencing the already good Chinese stock tube in my amp,
Each tube offers very subtle, sonic change.
Both blackplate models have a "warm" personality.
I'm not sure if its just in my head, but the Mazda is like putting my reading glasses on to clarify something I just read without them.
I can get by without them, but life is easier with them.
The sound I hear is maybe a smidge "clearer" with them?
I purchased them a few years back, and as supply dictates,price was less.
I also use the Mazda 12AX7 silver plate in my phono. Another tube worth seeking. I believe the current price also reflects availablility.
That is a meaningful description, saying that they are clean sounding and that al elements of the soundscape seem clearer than with others, in addition to the widely understood meaning of warmth, albeit a subjective meaning. thanks.
I might pursue them if I can find them .
I have so many good 12AU7s, Amperexes, Mullards, RCAs and Valvos. I was also surprised at the increased quality of a stock Chinese 12AU7, I got recently. Not to mention current production JJ 802S and subs like 5814s.
Steve
Mechans ;
Don't leave us in suspense like that !
What Chinese 12AU7's do you speak of ?
I am afraid the suspense will continue. The tube in question came with a small one tube hybrid headphone amp name the Bravo V2. It is made by a company calling itself ShenZhenAudio made in China. The tube is totally unbranded! The amp is really really good especially given its price. I rolled almost immediately, as a reflex, but then I thought let me compare the stock tube out of curiosity. In all honesty the tube was very good, not all that much worse than some of the best. I think is a reflection of the circuitry more than whether the tube was as good as my top contenders in particular some of my collection of 7316s which I have acquired over the years. (well before people started calling tungsram and g-d only knows what for a 7316,)
BTW I have no financial incentive whatsoever in telling you where you may be able to purchase this amp if interested.
Steve
Those are pretty. Very nice. I've never had the opportunity to audition them, but their reputation is very good. Do let us know if they live up to the hype.
I second the compliment to the French tube, it is indeed a good looking 12AU7. My problem is that I have too many ECC82 12AU7s in my current hoard and would have to sell or trade some, because It is ridiculous to hold on to as many authentic 7316s as I have which I bought well, before they became a tube sellers sales pitch. There are many which they label as 7316s that are not even close, mine are all made in Heerlen Holland etc.
A guy started to tell me that 12AT7s were superior to 12AU7s as input pre-ampn tubes. I found this hard to believe and pointed out how many manufacturers use 12AU7s not 12AT7s. But as a challenge to myself I rolled 12AT7s into the little headphone amp and was pleasantly surprised. I used a Brimar 6060 Trustee tube, a Telefunken ECC81, Siemens Ecc801S ! and a Mullard 12AT7. They were all excellent I must say. I am trying to find the thread to let them know how good they sounded. It is a little hard to say conclusively because the gain of any 12AT7 is way way more than a 12AU7 by design.
Steve
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