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Modular Amps
Egnater / Randall Modular Amps
12ax7 Preamp tube test (VIDEO)
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<blockquote data-quote="Rilke" data-source="post: 157051" data-attributes="member: 3746"><p>Hi Matt! </p><p>Thanks a lot!! Yeah, I wholeheartedly agree, VERY subtle differences!! I had expected a more significant change, which might be achieved by changing more tubes than just the V1. Apparently the general thinking (just reiterating here, so don't take my word for it hehe) is that in a tube amp with lots of tubes (a la the rm100), changing one tube yields a smaller degree of sonic change, than for example in a 2 tube 12ax7 amp. Which seems to make some sort of sense at least to me <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p></p><p>In this case I agree, the amount of compression, gain and brightness (or lack thereof) separates the different tubes by a hairwidth. I can distinguish the differences in a good listening environment, but even there the difference is very minor indeed. </p><p>I took great care setting up the experiment so that it should be as biasfree as possible, but it might be interesting to repeat it with a less gainy sound and see what changes might possibly come from that <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p>Best regards</p><p>Christian</p><p></p><p>PS.</p><p>Thanks Matt for all the good advice regarding my amp elsewhere on this forum, you're really an asset!</p></blockquote><p></p>
[QUOTE="Rilke, post: 157051, member: 3746"] Hi Matt! Thanks a lot!! Yeah, I wholeheartedly agree, VERY subtle differences!! I had expected a more significant change, which might be achieved by changing more tubes than just the V1. Apparently the general thinking (just reiterating here, so don't take my word for it hehe) is that in a tube amp with lots of tubes (a la the rm100), changing one tube yields a smaller degree of sonic change, than for example in a 2 tube 12ax7 amp. Which seems to make some sort of sense at least to me :) In this case I agree, the amount of compression, gain and brightness (or lack thereof) separates the different tubes by a hairwidth. I can distinguish the differences in a good listening environment, but even there the difference is very minor indeed. I took great care setting up the experiment so that it should be as biasfree as possible, but it might be interesting to repeat it with a less gainy sound and see what changes might possibly come from that :) Best regards Christian PS. Thanks Matt for all the good advice regarding my amp elsewhere on this forum, you're really an asset! [/QUOTE]
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Modular Amps
Egnater / Randall Modular Amps
12ax7 Preamp tube test (VIDEO)
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