Tube DIY Asylum

Do It Yourself (DIY) paradise for tube and SET project builders.

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: 6SN7 circuit

Posted by Chip647 on March 25, 2017 at 11:52:51:
Different. It really helps to understand what you need the circuit to do. If you need 10 to 20 db of gain to drive your amp to full volume and your preamp is 20 feet from your amps then either one will work. The Aikido injects B+ power supply noise out of phase into the signal to cancel. The Electra Print uses a step down transformer which accomplishes a noise reduction as well. Output transformers like this transfer voltage to current which makes for very good drive capabilities. The cathode follower aspect of the Aikido lowers the output impedance.
I happen to like transformers. Building a great power supply is key to either one.
If all you need to do is to attenuate a signal before your amp, the Autoformer volume control is really hard to beat.