HiFi Kit Building- have you ever built any hifi gear?

Like several others here, I built a pair of Hafler DH - 200’s ( strapped them for mono) in 1981 & then Hafler Five Hundred power amp in the mid 80’s . All of them sounded really good for the $ vs what was available then. They powered my DCM Time Windows, then Snell A - II’s & then Proac EBS’s. 
 

Fun times! 

There is a satisfaction in listening on gear you built! 

Not audio. In the late 60s I built an Eico VOM.

Built a Dynaco Intergrated amp in college and a Bob Latino 2 channel tube amp about 10 years ago.  Both kits performed well.  Great learning experience.  Highly recommend giving it a try.  On a side note -- Sold both after a few yearsof use resulting in a very low cost / high performance / highly enjoyable experience.