Home SET Asylum

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

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ SET Asylum ]
[ Alert Moderator ]

Yes - let's define filament bias

Filament bias isn't an "attempt to get more power" - that's fixed bias in the old-world sense where it was used for output tubes.

The modern usage is for DHTs, usually but not exclusively in the input section(s). The modern implementation uses sophisticated solid state circuits like Rod Coleman regs (now version 7) and choke input filament supplies. This is not trivial engineering - it's been very well thought out and has a LOT of users around the world.

I'm not particularly surprised you don't understand the sonic benefits since
1. You don't use DHTs in the input section
2. You believe that cathode bypass caps are an acceptable alternative. I don't, and I've tested plenty.

Since you can't do a direct comparison, it's pretty meaningless trying to compare the sonic results.

This post is made possible by the generous support of people like you and our sponsors:
  Kimber Kable  

Follow Ups Full Thread
Follow Ups
FAQ

Post a Message!

 Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]