12AX7 Pre Amp Tubes Available But NOS and Expensive

[JackD201]

Hunt for Valvos John. They sound great and aren't so popular that they've been faked a lot like many of the more popular brands. Counterfeits are the biggest risk when doing NOS and NIB.

 

[Johnny Vinyl]

Tim - There are a good number of guitar shops and music supply shops around, so I'll visit them and see what they have.

Jack - OK...I'll check them out.

I don't want to go nuts here, but I'm not unopposed to find a pair for $100 or so, if I have to. Is this doable?

 

[MylesBAstor]

I just purchased a Jolida JD9v2 phono preamp that uses a pair of 12AX7 tubes. I'll be picking up the unit on Saturday and can let you know what tubes are inside. I've been told that changing tubes would be highly beneficial and am looking for some suggestions. I am a complete novice when it comes to tubes, so anything you have to say will be received with much appreciation.

I've linked you to Parts ConneXion as they are only a 20-minute drive from my place, and they seem to have a good variety of tubes in stock.

Thanks!

What ECC83/12AX7 does Jolida use?

 

[Johnny Vinyl]

What ECC83/12AX7 does Jolida use?

I don't know, which is why I said I'm going to open the unit when I get it to find out. The tube brand/manufacturer isn't specified anywhere that I can see.

 

[puroagave]

the tubes in the jolida only act as a buffer, the actual gain stages are a pair of op amps per channel. I don't think matching and selecting for lowest noise is crucial with this design, ymmv.

 

[Johnny Vinyl]

the tubes in the jolida only act as a buffer, the actual gain stages are a pair of op amps per channel. I don't think matching and selecting for lowest noise is crucial with this design, ymmv.

Does that mean I shouldn't look for different tubes? What would you recommend I do (if anything)?

 

[MylesBAstor]

Does that mean I shouldn't look for different tubes? What would you recommend I do (if anything)?

No, just you can save a little money.

 

[Johnny Vinyl]

No, just you can save a little money.

I'm all for saving a few dineros. Anyway, I'll post the brand of tube I find inside when I pick it up on Saturday.

 

[class a]

Does anyone have an opinion on Cryoset tubes. A friend of mine recently put a pair of Gold Lion gold pins into the Unison Research integrated and it was a big step up from the standard Tung Sol gold pins the came w/the unit. I think the cost was $45 per tube.

 

[mep]

Does anyone have an opinion on Cryoset tubes. A friend of mine recently put a pair of Gold Lion gold pins into the Unison Research integrated and it was a big step up from the standard Tung Sol gold pins the came w/the unit. I think the cost was $45 per tube.

Same company makes both tubes.

 

[Johnny Vinyl]

Looks like I may have found a good local source for tubes.

http://www.canuckaudiomart.com/details/649017336-ge_12ax7_pairs_1960s/

 

[Johnny Vinyl]

I opened up the Jolida JD9v2 and here are 3 pics. You'll note from the last picture I will have to remove the tubes to see what brand they are, and do I do that by unscrewing the metal housing into which the tubes are placed? I tried gently pulling on them, but nothing...no movement at all.