Isaacc7's latest activity
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Isaacc7 replied to the thread The Reference Pentode and Beam Tetrode Thread EL34, KT66, KT77, KT88, EL11, EL12, EL3N, EL35, EL37, 6550, 6L6, EL51, EL39, 4654, 4699, KT63, KT61, 6V6, etc.Huh, I don’t know what the difference is between the 5b/254a and the 5b/254m. I’ve never seen the 254a before and I’m having trouble...
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Isaacc7 replied to the thread The Reference Pentode and Beam Tetrode Thread EL34, KT66, KT77, KT88, EL11, EL12, EL3N, EL35, EL37, 6550, 6L6, EL51, EL39, 4654, 4699, KT63, KT61, 6V6, etc.The vt60 has a really different plate structure, haven’t seen any other tubes like it. I have the Mullard brown base 807, Mazda 807...
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Isaacc7 replied to the thread The Reference Pentode and Beam Tetrode Thread EL34, KT66, KT77, KT88, EL11, EL12, EL3N, EL35, EL37, 6550, 6L6, EL51, EL39, 4654, 4699, KT63, KT61, 6V6, etc.The VT60 don’t sound like any other 807 I have. The vt60 sounds noticeably more open and detailed in both of my amps. It can be an...
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Isaacc7 reacted to UntilThen's post in the thread The Reference Pentode and Beam Tetrode Thread EL34, KT66, KT77, KT88, EL11, EL12, EL3N, EL35, EL37, 6550, 6L6, EL51, EL39, 4654, 4699, KT63, KT61, 6V6, etc with Like.It's been a week now since I have been using the GEC 807 ATS25. Where EL34 midrange sound a bit scooped, 807 like 6L6 midrange is front...
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Isaacc7 replied to the thread The Reference 6SN7 Thread.That looks ridiculous. I’m not an engineer but I can’t think of any reason for the getter to be put up so far in the tube. It’s clear...
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Isaacc7 reacted to mordy's post in the thread The Reference 6J5 Thread (L63, 6C5, 12J5, 6P5, etc.) with Like.The budget champion of these tubes is the Shuguang 6C8P and surprisingly it is very good sounding and can easily hold its own against...
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Isaacc7 replied to the thread The Reference Pentode and Beam Tetrode Thread EL34, KT66, KT77, KT88, EL11, EL12, EL3N, EL35, EL37, 6550, 6L6, EL51, EL39, 4654, 4699, KT63, KT61, 6V6, etc.Have spent the last week using both the cv4062 and n78 tubes in my single ended pentode amp. They use the same adapters but I can’t get...
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Isaacc7 replied to the thread The Reference 6SN7 Thread.Saying that GE didn’t make good sounding tubes is a bit of a meme at this point. They do have some standout output tubes like the oval...
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Isaacc7 replied to the thread The Reference 6SN7 Thread.I’ll condense the thread for you. Every NOS 6sn7 is great (except GE) and is the best thing they have ever heard until the next NOS 6sn7...
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Isaacc7 reacted to leftside's post in the thread The Reference 6J5 Thread (L63, 6C5, 12J5, 6P5, etc.) with Like.It’s great this thread has shed light on how good a tube the 6J5 tube is, so people read this thread and go looking for the tube. More...
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Isaacc7 reacted to leftside's post in the thread The Reference 6J5 Thread (L63, 6C5, 12J5, 6P5, etc.) with Like.Yep this is how it works. Folks retire, and have more time on their hands. Sell a lot of their tubes to other folks, and bring in a bit...
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Isaacc7 replied to the thread Tube rolling thread | UltraSonic Studios.I dunno, I am wary of substituting a higher rated fuse. The whole idea is that it should blow before anything gets damaged. If it has a...
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Isaacc7 replied to the thread Tube rolling thread | UltraSonic Studios.I have a working hypothesis. My current settings (pardon the pun) are as “wide open” as I’ve ever run the amp. I have in the past only...
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Isaacc7 reacted to OctavianH's post in the thread Tube rolling thread | UltraSonic Studios with Like.These are bad news, well, let's hope for the best.