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Crack;Bottlehead OTL
Sep 7, 2014 at 8:33 AM Post #5,926 of 12,335
cmander10 said:
klots said:
 Have you looked the CBS 5814A? Also very nice tube and I read that it pairs with 5998 very well. Im using that tube with my GE 6as7ga at the moment, but my 5998 should arrive next week. 
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Have to try it another time along with E80CC. Already bought the Bugle Boy and Cleartop. Leaning towards the RCA 6AS7G as well since the only Tung sol 5998 I can find is on vacuumtubes.net for $85.
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You can't find them cheaper
 
Sep 7, 2014 at 10:45 AM Post #5,928 of 12,335
vacuumtubes.net by all accounts are quiet good with exchanging if you luck out and get a noisy tube even when a tube tests well this doesn't guarantee its going to be quiet enough to be suitable for head amp use.
 
Sep 7, 2014 at 3:50 PM Post #5,935 of 12,335
Ebay.............
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 I've just checked their's plenty of 5998 and they cost plenty of money as well.
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Do you really need the 5998 for the CRACK?Does this tube improved the sound quality of the CRACK that much?
I changed the OUTPUT CAPS on my CRACK i paid $125 for 2 caps(See pictures).Does this cap improved the sound?Yes a little bit not like it's night and day diference IMO the improvement is not worth $125.I installed 23 stepped attenuator and IMO it only fixed the channel imbalanced and the attenuator it reduced the bass,is this attenuator upgrade worth it?maybe.
 If i'am going to build another CRACK i will just install the Speedball and be done with it.The CRACK's sound with the Speedball is really really good IMO no need for anymore modifications because this amp is well put together.Sorry folks!

 

 

 

 

 

 
Sep 7, 2014 at 5:33 PM Post #5,939 of 12,335
 That's what i've been using on my CRACK RCA,Raytheon,Sylvania,Chatham,Tung-Sol,GE 6AS7G's/6080's,12AU7's/5963 and 6SN7's these are all my existing tubes before the CRACK.No need for me to tube roll i have plenty of these tubes i'am set for life.Tube rolling can be EXPENSIVE.I'am trying to work around all my existing tubes when ever i'am looking for an amp in this way i don't need to spend more money on tubes Except for the S.E.X. i need a few pairs of 6DN7's i'am waiting for four pairs of these tubes before the S.E.X. arrived.
  For me using a Premium/Exotic tubes on a amp that is not designed for it is kind of waste,sure it works but is it worth it?I don't know and i don't want to get into premium tubes unless i have or i can afford an AMP that is designed to run Premium tubes.Good luck on your tubes searching/rolling and i'am sorry for your wallet!
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Sep 7, 2014 at 5:48 PM Post #5,940 of 12,335
cmander10 said:
Any places to look to find a 5998 Tung Sol?
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Best place to get that 5998 is in the for sale forums. Lots of tube guys willing to sell this tube without raping you. Never hurts to ask.
 
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