I found a pair of these yesterday and they are both NOS and test as new at 12,600 umhos, both mullards.
At first i thought they were just E88CC, but noticed the /01 at the end which actually designates a different part number.
Seems they are a "special quality" E88CC that has low noise.
Isint that what an E88CC should be?
Sounds to me that one of these is a super dooper high quality ECC88, even moreso than the E88CC?
If its low noise, I wonder whats different, they look pretty much identical, but perhaps they have a twisted heater or something?
Either way, probably nice tubes for my phono stage, although will there be any noticeable benefit?
I still have a pair of used E88CC mullards that test near new.
At first i thought they were just E88CC, but noticed the /01 at the end which actually designates a different part number.
Seems they are a "special quality" E88CC that has low noise.
Isint that what an E88CC should be?
Sounds to me that one of these is a super dooper high quality ECC88, even moreso than the E88CC?
If its low noise, I wonder whats different, they look pretty much identical, but perhaps they have a twisted heater or something?
Either way, probably nice tubes for my phono stage, although will there be any noticeable benefit?
I still have a pair of used E88CC mullards that test near new.
These are E88CC selected for low RF noise.
Probably doesn't matter that much for audio applications.
You done well to discover the /01's, the Halo Getter is extremely rare as a Matched Pair .
I have searched out a Matched Halo Getter Pair for a Few Years.
They are as said, selected for Oscilloscopes.
I have heard these in a Tube Rolling exercise, alongside other Early 60's Vintage Brands, and it took me two years to source my own Pair of /01's with the Halo Getter.
I have searched out a Matched Halo Getter Pair for a Few Years.
They are as said, selected for Oscilloscopes.
I have heard these in a Tube Rolling exercise, alongside other Early 60's Vintage Brands, and it took me two years to source my own Pair of /01's with the Halo Getter.
Wow, so I've scored some rare tubes, IDK if I'll be in a hurry to use them in my phono stage, but I'll see how they sound anyway. I was tempted to get a pair of Telefunken from that crowd who stumbled across an old stockpile of the things...
It was a private seller who often finds tubes from deceased estates. (No it was not Paul Burgess) Cant even remember his name, but I first met him at an Amateur radio club a while back. I have bought a few tubes off him over the years.
I found some other tubes in his lot, he claimed everything was NOS and had to swap out the boxes as he claims they were damaged, but some clearly look used and others did not test as new, but for the most part most of the tubes appear new and certainly test as a NOS tube should.
Got a telefunken smooth plate ECC83 in there that sadly looks like half the getter has gone, and a telefunken EF86, along with some mullard ECC81 and a bunch more EF86 and a couple of ECC83.
He was asking stupid money for them individually, but said i could have the whole lot for only $150 which didnt make any sense to me. Im not complaining even if he was not being true to his description, since ive got at least 1 good matched pair of these.
Ive got draws full of tubes I need to test right now, ive just finished calibrating my Weston 981 tester and need to get a socket saver 😉
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Thanks for that. I don't like paying more than a few dollars each so mostly avoid the more popular (=expensive) tubes for my designs. But ECC88 definitely a handy tube to have in the parts drawer.
Yeah definitely, i don't typically pay much for untested tubes. In this instance they only owe me about 20 dollars each.
There are / 01's from other suppliers.
Phillips from Holland is one Brand and some are Unbranded with only the Code.
The Later and more common Type is the Revolver Getter /01.
Phillips from Holland is one Brand and some are Unbranded with only the Code.
The Later and more common Type is the Revolver Getter /01.
Phillips and mullard were essentially the same company, so is no surprise to me.
I cant find any other brands from whst I've seen on ebay or Google images plenty of unbranded CV2493 that look like they were made by philips or mullard.
look at the etched code in the tube.
I have more than eighty tube samples of this type.
I'm still looking for a TFK with gold grid pins, to match with an existing.
If you have, let me know.
I have more than eighty tube samples of this type.
I'm still looking for a TFK with gold grid pins, to match with an existing.
If you have, let me know.