McChanson amps appreciation thread
Apr 28, 2024 at 7:07 PM Post #16 of 21
Alright let's compare apples to apples. I've used EL81 in Ultimate many times but never as a side by side comparison with Oblivion. So here we go.

Ultimate - 6S3P, Siemens 6CJ6 (EL81), Tesla EZ81. Single Ended amp.
Oblivion - Marconi 6AV6, Siemens CV2721 (EL81). Balanced amp.

Now Ultimate soundstage opens up with the 6S3P and EL81 but Oblivion still sound more wide spread, deeper, higher. Tone wise they are more alike now and we're splitting hairs here but I have a slight preference with Oblivion on EL81 tubes. Both are gorgeous sounding. :relaxed:

Remember that Tomas chose EL81 specifically for Oblivion because he said the tube measures very linear. Likewise he chose EL36 for Citadel.

Both are incredibly good looking too. I've decided to lose the socket savers in Ultimate for this photoshoot.

Dimensions are almost the same.
Ultimate - 43 mm x 31 mm x 9 mm
Oblivion - 45 mm x 29 mm x 9 mm

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Whoa!! Those are some tiny amps.

Ultimate coming in at 43 millimeters, that has got to be some sort of record!! :sweat_smile:
 
May 9, 2024 at 11:54 PM Post #20 of 21
@UntilThen will you be adding some more of Erics speaker amp details and types ?
 
May 10, 2024 at 12:11 AM Post #21 of 21
@UntilThen will you be adding some more of Erics speaker amp details and types ?

Yeah as I go along. A lot have been described in the other thread. As I see it, there are only 2 that I am interested in. The KT170 amp (uses a lot of the pentodes and beam tetrodes) and the 300b amp.

@rollinbr Chameleon is really a KT170 amp that uses Super Silk output transformers. That's a beautiful muscular amp and at the Arizona meet, those guys love it driving Susvara !

There's also the Push Pull that has a lot more power for speakers. 6L6GC or KT150. You're looking at 25w and 50w respectively.

My previous Destiny 300b amp is really a speaker amp at 8 watts but it drives Susvara with great bass and authority. I went with Interstage transformers instead of caps. That's $300 extra. By right I shouldn't have sold off that amp but there are a lot of things I shouldn't have done in this journey. :relaxed:

I had already paid up for Telemachus 90% of the cost and could almost smell it but then tragedy strikes and I didn't get to see it in real life. This was the amp I was willing to give up Destiny for even though I haven't heard Telemachus.

This is Telemachus 10 beautiful watts with Monolith Magnetics output transformers. Now I can only speculate what life would be like if I had gotten it.
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