Finished my Mainline build a couple of weeks ago, and REALLY enjoying it with NAD Viso headphones.
I had previously built 2 Foreplays, a FP3, FP3 C4S upgrade and a Seduction, but hadn't built a BH kit in years. I must say that the clarity of the instructions and pictures in the Mainline manual was absolutely outstanding. By far the best construction manual of ANY kit I have built, and I've built other brands too.
If you take your time and go slow, it's hard to make a mistake. Thank you Bottlehead!
Dave