RE: Class A Tube amp questions???

Posted by 6bq5 (A) on July 17, 2023 at 10:56:31

In Reply to: Class A Tube amp questions??? posted by Jacques Whiteman on July 16, 2023 at 19:57:35:

Jacques-
Welcome to the asylum!
as you can see, lots of great information coming at you-

To echo a few of the stalwarts - it sounds like your amps are class AB1 - aka Push-pull - this is not to diminish the amp or your enjoyment of it

Since the late '80s/'90s having the option for using multiple output tubes has become quite common. There are a few things to be careful of -
Some of the newer KT series tubes (anything after KT-90) have filaments that draw large amounts of current, and many can support much higher B+ voltages than the traditional KT-88 / 6550 - assuming you want long tube life ...

There is lots about this hobby that is quite subjective - if you enjoy the sound from these amps - you are on the right track-
if you want a different sound - I would encourage that you try an amp w/ different OPT (Output transformers) - the OPT has a huge effect on the sound of a tube amp...

Happy Listening

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Follow Ups Full Thread

Topic - Class A Tube amp questions??? - Jacques Whiteman 19:57:35 07/16/23 (21)

RE: Class A Tube amp questions??? - niws 18:31:45 07/17/23 (0)

RE: Class A Tube amp questions??? - 6bq5 07/17/2310:56:31 07/17/23 (2)

Or no OPT at all! - voolston 16:22:48 07/17/23 (1)

RE: Or no OPT at all! - 6bq5 16:49:40 07/17/23 (0)

The trick is high power Class A tube amps - geoffkait 05:01:02 07/17/23 (5)

No, those are Class AB - Tre' 07:58:33 07/17/23 (0)

two 'non tricky' ways to get high-ish power Class A: pentodes and/or parallel output devices - mhardy6647 05:46:58 07/17/23 (3)

RE: The real question is why use inefficient/insensitive loudspeakers? - ltman 20:01:00 07/18/23 (0)

+1 - Joe Appierto 07:35:58 07/17/23 (0)

"Why use inefficient/insensitive speakers?" Because they are easier to build ? - peppy m. 07:15:52 07/17/23 (0)

RE: Class A Tube amp questions??? - hahax@verizon.net 20:43:10 07/16/23 (10)

RE: Class A Tube amp questions??? - Jacques Whiteman 23:09:45 07/16/23 (9)

RE: Class A Tube amp questions??? - Daveslater 05:30:28 07/17/23 (0)

RE: Class A Tube amp questions??? - sony6060 00:16:21 07/17/23 (7)

I think hahax was right about SETs - Feanor 04:32:59 07/17/23 (6)

RE: I think hahax was right about SETs - Tre' 07:30:47 07/17/23 (0)

RE: I think hahax was right about SETs - sony6060 07:06:49 07/17/23 (4)

RE: I think hahax was right about SETs - Tre' 07:52:33 07/17/23 (3)

RE: I think hahax was right about SETs - sony6060 07:55:46 07/17/23 (2)

RE: I think hahax was right about SETs - Tre' 08:00:56 07/17/23 (1)

RE: I think hahax was right about SETs - sony6060 08:12:28 07/17/23 (0)

Follow Ups

RE: Class A Tube amp questions??? - 6bq5 07/17/2310:56:31 07/17/23 (2)

Or no OPT at all! - voolston 16:22:48 07/17/23 (1)

RE: Or no OPT at all! - 6bq5 16:49:40 07/17/23 (0)

RE: Class A Tube amp questions???

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