Hirsch
Why is there a chaplain standing over his wallet?
- Joined
- Aug 12, 2001
- Posts
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For the HD-600, any of the three tubes you showed would be great. I like to use a black plate Sylvania 12AT7WA, triple mica with them. These tend to have tighter highs and lows than the grey plates I normally prefer, which are better in the midrange.