AudioCircle

Audio/Video Gear and Systems => Tube-o-phile Circle => Topic started by: Escott1377 on 19 Jun 2019, 07:31 pm

Title: 12AU7
Post by: Escott1377 on 19 Jun 2019, 07:31 pm

Got an email notification for Tube Depot running a screaming deal on these.

*I have no affiliation w/ this vendor except as a customer.*

https://tubedepot.com/products/telefunken-g73r-extraordinarily-special-quality-ecc802s-ecc82-12au7

Title: Re: 12AU7
Post by: jeffreybehr on 20 Jun 2019, 07:51 pm

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FOUR-HUNDRED DOLLARS?????????????????????????????????????????  :(   :cry:   :roll:   :roll:   :(
.

Title: Re: 12AU7
Post by: Escott1377 on 20 Jun 2019, 08:25 pm

It was a 1 day special and they were less than $300 / pair and are now sold out! :)

Title: Re: 12AU7
Post by: Tom Bombadil on 21 Jun 2019, 12:23 am

I wonder what they sold for when new?  $10?  $15?  They were replacement parts.   Brent Jessee sells them for $999 a pair. 

My experience with rare NOS tubes is very mixed.  Sometimes great, sometimes indistinguishable from other good quality tubes.  I'd have to own really great gear to consider burning up a thousand dollar pair of tubes. 

One of my experiences with a rare tube was with RCA red base 5692, a 6SN7 equivalent.  Sold by many tube sellers as a premium military low-noise 10,000 hour tube for $200-$300 each.   Well, they do run for 10,000 hours if you run them at voltages well below a standard 6SN7 circuit.   Running as a 6SN7 in a standard circuit there is nothing special about this tube at all.  I had two of them for a 6SN7 shootout of about 20 different tubes.  They tested perfectly and had no microphonics.  Soundwise I ranked them in the middle of the pack.  They were decent and sounded good, just nothing special.   I sold them as I had no use for them and others were willing to pay good money.

Title: Re: 12AU7
Post by: RPM123 on 22 Jun 2019, 11:03 pm

I received my G73R today and yowza what a great sounding tube! So quiet, great resolution, sound staging and bass. Vocals are almost hypnotic. My only regret is that I didn't order two of them. Installed in a Tavish Audio Adagio phono stage in place of a 12BH7 tube, recommended by Scott the designer. Back to listening.

Title: Re: 12AU7
Post by: SlushPuppy on 23 Jun 2019, 12:55 am

I almost pulled the trigger on that one two times. Uhhg... Still waiting on my vintage Brimar's from Upscale Audio.

Title: Re: 12AU7
Post by: Escott1377 on 24 Jun 2019, 03:43 pm

Quote from: SlushPuppy on 23 Jun 2019, 12:55 am

I almost pulled the trigger on that one two times. Uhhg... Still waiting on my vintage Brimar's from Upscale Audio.

The Clifte's from Upscale have given me good mileage in my pre amp.