Dennis Had Inspire Amps

[bearcity]

Originally Posted by Coltrane1

Hi All!

Hope everyone is holding up okay. What's new on the Inspire horizon? I'm seeking something to drive KT150 tubes.

Any suggestions?

Thank you - Be safe!

What speakers you pushing?

[FloridaBoy]

Originally Posted by bearcity

I have sworn off Chinese tubes in general for that reason. Too many failures for the $$$. When I buy vintage Soviet tubes 10 at a time and a few are bad or miss-matched beyond usability I am not broken up about it. At <$10/ I just pull out another and away we go. My Sophia 274b mesh lasted less than a year. Sounded good, but not that good. Psvane uk 6sn7, a couple months. Shuguang (sp) 6sn7 blue glass, a couple days. Black glass 6sn7, one section DOA. I assume others have better luck than me but I’m out. But those round glass 6sn7 look so cool.[emoji848]

There was a fire that shut the Shuguang factory down.

https://forums.qrz.com/index.php?thr...t-down.685231/

It's possible that many of the tubes being sold presently are sub-par. i.e. unscrupulous sellers. Your issues with the Sophia tubes is disconcerting.

[bwilson51]

I have a LP-3.1 preamp and it uses a 5y3 rectifier tube and a Hot Rod amp that I bought has a 5U4 rectifier tube.I have a pair of Mullard 5ar4 I would like to try and I was wondering if this was ok.

[bearcity]

Go for it. Watch for red playing on the amp. Especially if running low power output tubes like 6v6 of 6f6.

[bwilson51]

Originally Posted by bearcity

Go for it. Watch for red playing on the amp. Especially if running low power output tubes like 6v6 of 6f6.

I plan on using Gold Lion KT-88’s ,KT-66’s and EL-34’s, I have a pair of Svetlana winged C 6l6’s but I am afraid to try them. Those tubes are new but I think they are 10-15 years old(they have been sitting in a box in my closet)

[bearcity]

Originally Posted by bwilson51

I plan on using Gold Lion KT-88’s ,KT-66’s and EL-34’s, I have a pair of Svetlana winged C 6l6’s but I am afraid to try them. Those tubes are new but I think they are 10-15 years old(they have been sitting in a box in my closet)

Roll on. Should be no issues. Try those winged Cs too. They should sound fantastic.

[FloridaBoy]

Originally Posted by bwilson51

I have a LP-3.1 preamp and it uses a 5y3 rectifier tube and a Hot Rod amp that I bought has a 5U4 rectifier tube.I have a pair of Mullard 5ar4 I would like to try and I was wondering if this was ok.

Don't use the 5AR4 in the LP 3.1

The 5AR4 will be fine with KT88's etc.

[bwilson51]

Will it be ok to use a 5u4a tube with the LP-3.1, I have a tung sol usa 5u4 and a Sylvania 5U4a I want to try.I have a rca 5y3 and a JJ 5y3 my rca makes some noise ,the jj is fine I would like to try different tubes.

[FloridaBoy]

Originally Posted by bwilson51

Will it be ok to use a 5u4a tube with the LP-3.1, I have a tung sol usa 5u4 and a Sylvania 5U4a I want to try.I have a rca 5y3 and a JJ 5y3 my rca makes some noise ,the jj is fine I would like to try different tubes.

I'd check with Dennis before trying it.

[FloridaBoy]

Originally Posted by bwilson51

I plan on using Gold Lion KT-88’s ,KT-66’s and EL-34’s, I have a pair of Svetlana winged C 6l6’s but I am afraid to try them. Those tubes are new but I think they are 10-15 years old(they have been sitting in a box in my closet)

No worries, they are NOS new production tubes. Give them a go.