SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: "a more linear driver tube"...

Posted by Deke609 on June 16, 2020 at 06:05:11:
Like Ivan303, I also think there's something special going on with the 5670. I am probably one of the few outside of Bottlehead who has heard the Stereomour with the premium iron that comes with BH's Kaiju 300B and Monomour 2A3 amps. I installed my Kajiu iron in a Stereomour. It appreciably improved the sound (to my ears), but the Stereomour still fell considerably short of the Kaiju. Other than the driver tubes (12AT7 in the Stereomour, 5670 in the Kaiju), the amps were essentially identical (besides the output tubes -- but I used very nice EML tubes in both). In fact, the Stereomour with Kaiju iron arguably had an advantage: installed in the Stereomour, the Kaiju plate choke could be used full winding (I think 60H?), whereas in the Kaiju only a partial winding is used (40H?).

Which leads me to think that it's the 5670 that makes (much of) the difference. The only other potential explanation I can think of is the spacious layout of the Kaiju - perhaps greater distances between iron and other components is a contributing factor.

I suspect that there's something not captured by distortion measurements going on here. The Kaiju just sounded "bigger and better".

I would imagine that the Monomours, which take advantage of the full plate choke winding and use 5670 drivers, sound very good indeed.

cheers, Derek