You have one preamp tube (the middle 12AU7). The rest of the nine-pin miniatures, comprise the front end of the Rogue’s power amp section. If it’s sounding good; no (no worries). Those will typically last much longer than the output tubes. KUDOS, on finding the issue.
Should I upgrade my Tubes
I have a Rogue Audio Magnum II which is 100 Watts per channel paired with Vandersteen Treo CT speakers. My tubes seem to be shot as suddenly I get no amplification (just very low level audio). The 4 power tubes are TUNG-SOL KT120. I have been reading about getting "better" tubes but every discussion seems to get into "depends how you like the sound" types of comments similar to every other audio component - LOL.
So what's a man do ?
So what's a man do ?
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- 20 posts total
Check them at least, ay. Do you have a way, or know someone? It will also tell you how much is still there, and when you might need to change them, or at least be looking for some good replacements. Panic buying is no fun, over a valve. A spare or two is never a bad idea, and you really don't want to let them FAIL, before replacing... It can cause more than a valve to fail.. ok... The Tubes, what a crazy band.... :-) Regards |
An easy, more noticeable (generally) and less expensive way to enter the tube-tasting whirlpool, than swapping power tubes: a change of the preamp tube. There are a number of nicer 12AU7/ECC82 tubes, that will change the Cronus’ presentation. Mention your tastes to any of the tube mongers I’ve listed. They can easily guide you to sonic bliss (kinda flowery, but- yeah). Some opinions, here: http://hktubeaudio.homestead.com/files/best_of_the_best_12au7.htm One nice thing; many of the better NOS, nine-pins are rated for 10K hours. That tube will need to be tested/certified for low noise. Any good seller will know that and provide such. |
- 20 posts total