Liquid Platinum Tube Rollers.
Jan 29, 2019 at 12:58 PM Post #2 of 1,684

Wes S

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First roll for me has been the Amperex 7308 UN-CEP, made in USA.

Lovely midrange, with excellent tone. Voices are beautiful. Overall pretty even, with good layering and depth front to back. Pretty immersive, and 3d like. Tight and textured bass, that hits hard when called upon, but does not overshadow the mids at all. The highs are extened, but never get harsh. This tube has great dynamics.

My next tube is the Brimar CV2492, and then a Mullard CV2492. I will report back
 
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Jan 29, 2019 at 3:36 PM Post #4 of 1,684

DRHamp

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At the risk of re-posting information from the LP thread, I thought it would be worthwhile to get this posted again in the LP tube rolling thread. The following are some of the tubes that I have rolled in the Platinum and my top choice of each tube type.
2C51/396A/5270 - These work well with the proper adapter. My pick - 50s Foton triple mica
12AU7/ECC82 - These also work well with the proper adapter. My pick - 62 Telefunken Smooth Plate
12AT7/ECC81/6201 - These did not work for me - very audible noise - I tried a variety with differing degrees of noise. Requires adapter and assume the noise problem is related to tube amp factor. 12AT7 amp fact - 66 where 6922 amp factor is 33 and 12AU7 is 16. Based on this I assume the 12AX7 would also not work with an amp factor of 100. I look forward to others trying these to confirm my findings or not. My all time favorite tube pair are 50s Valvo PW 6201s.
I've tried quite a few 6922 and variants which I really like, but the the best sounding tube pair, by far, that I've tried in the Platinum are late 50s Sylvania 6922 D getters. They are rare and very hard to find and I can only hope to come across another pair.
So, that's a start - I have more tubes to roll
 
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Jan 29, 2019 at 3:39 PM Post #5 of 1,684

Wes S

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@ DRHamp - Good info. I have never seen a Sylvania 6922. Any chance i could see a pic?
 
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Jan 29, 2019 at 3:51 PM Post #6 of 1,684

DRHamp

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Good info. I have never seen a Sylvania 6922. Any chance i could see a pic?

IMG_20190129_144240.jpg
IMG_20190129_144420.jpg
 
Jan 29, 2019 at 4:01 PM Post #8 of 1,684

TK16

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At the risk of re-posting information from the LP thread, I thought it would be worthwhile to get this posted again in the LP tube rolling thread. The following are some of the tubes that I have rolled in the Platinum and my top choice of each tube type.
2C51/396A/5270 - These work well with the proper adapter. My pick - 50s Foton triple mica
12AU7/ECC82 - These also work well with the proper adapter. My pick - 62 Telefunken Smooth Plate
12AT7/ECC81/6201 - These did not work for me - very audible noise - I tried a variety with differing degrees of noise. Requires adapter and assume the noise problem is related to tube amp factor. 12AT7 amp fact - 66 where 6922 amp factor is 33 and 12AU7 is 16. Based on this I assume the 12AX7 would also not work with an amp factor of 100. I look forward to others trying these to confirm my findings or not. My all time favorite tube pair are 50s Valvo PW 6201s.
I've tried quite a few 6922 and variants which I really like, but the the best sounding tube pair, by far, that I've tried in the Platinum are late 50s Sylvania 6922 D getters. They are rare and very hard to find and I can only hope to come across another pair.
So, that's a start - I have more tubes to roll
https://www.ebay.com/itm/Pair-of-Sy...680ab6acb6b9761ffec1ed8|iid:1&redirect=mobile
Is this it?
 
Jan 29, 2019 at 4:13 PM Post #10 of 1,684

DRHamp

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Those are horseshoe not D getters. Different lettering and I think those are 60s, but the price is in range. I got my pair from AC over in the Lyr tube rolling thread because they were microphonic in his MJ2. They are not microphonic is my LP or my MJ2.

They do look similar to mine - maybe what they're calling a horseshoe getter is the same as D getter
 
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Jan 29, 2019 at 4:16 PM Post #11 of 1,684

Wes S

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Those are horseshoe not D getters. Different lettering and I think those are 60s, but the price is in range. I got my pair from AC over in the Lyr tube rolling thread because they were microphonic in his MJ2. They are not microphonic is my LP or my MJ2.
What do the one's you have sound like? Are they warm?
 
Jan 29, 2019 at 4:20 PM Post #12 of 1,684

DRHamp

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What do the one's you have sound like? Are they warm?

Very detailed and awesome soundstage, both width and depth and to my ears, they are certainly not bright. I'm not good at describing what I hear so sorry for lack of detail.
 
Jan 29, 2019 at 4:22 PM Post #13 of 1,684

Wes S

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Very detailed and awesome soundstage, both width and depth and to my ears, they are certainly not bright. I'm not good at describing what I hear so sorry for lack of detail.
That works, and thanks! I love a wide soundstage.
 
Jan 30, 2019 at 12:55 PM Post #15 of 1,684

GlenT

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I have a pair of JAN GE 5670 tubes that I liked the sound of in my LOXJIE P20 amp and I am going to try them in my LP with an adaptor. I hope to get the clarity of the LP with the smoothness of the 5670 tubes. However, I am quite new to this whole tube rolling thing.
 

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