nightsky87
New Head-Fier
- Joined
- Apr 7, 2014
- Posts
- 34
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- 10
I believe up to VR7 or VR8 exchange code, was used in the 60's. Seems like a nice deal. Keep us posted
Oh, in that case, this does look like an early Heerlen tube. I do hope this sits nicely with my hearing. I'll post my impressions once I have the tube here. Though I only really have my Blackburn Mullard to compare it to.