I'm a proud owner of a Mc 275 mk3,my tubes are not bright or lite up like other tube amps I've owned so I think theres a pattern here,however never an issue and love the sound,of course my kt 88s are Black Treasures so you can't see them well any how,but the 12 ax7 s don't burn bright either, wouldn't be concerned!
McIntosh MC275
Hi all. I recently purchased a used MC275 in very good condition. The original owner said he had it service not too long ago. The amp appears to work fine but the tubes are very dim. I had them tested and they are fine with about 1/2 life still on them. Not sure what to do. Do I need new tubes or is there an adjustment I need to make? If I need new tubes then could someone give me an idea what to get and where to place them on the amp (which slots)? I want quality tubes so please, ANY guidance would be appreciated. Thank you
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If you really want to see the tubes glow, you can turn up your preamp as loud as it can go, and the power tubes do tend to glow a little brighter. Seriously though, there are many amps and preamp out there that the tubes barely glow. I have a Berning TF-10 that you can barely tell the tubes are on. Tube brightness is no indication if they are "good" or not. 2112oracle: Have you tried any other KT-88's? I was curious about the black treasures, but the cost at the time was a little steep for me. |
I concur with the assessment made regarding the dimness of the tubes not being an indicator on their performance. I know it can be confusing with all of the Tube Amp Porn Photos on the internet revealing as much light as a fireplace on each Amp. - Marketing But most important is how they sound to you. If you do not like how they sound, then I suggest swapping out the Tubes. I have gotten some fantastic stuff from this site. http://www.audiotubes.com |
- 17 posts total