This is the preamp documentation that came along with my amp. To be honest ever since trying the Slagle AVC I've given the middle finger to preamps. Since I haven't seen it out on the electroweb I'll post it here.
12AT7 - こんにちは 届きました♪ かなり古い真空管ですが 測定値もノイズも いい感じです ありがとうございました♪
54 minutes ago