Anyone ever used a kit to build an amp?

Really fancy trying to build my own headphone amp…yeah I know lol, i’m originally a silversmith by trade so soldering etc isn’t a problem, i’ve been looking at a… https://www.ebay.co.uk/itm/G1217-PROJECT-SUNRISE-III-TUBE-HEADPHONE-AMPLIFIER-PRE-AMP-DIY-KIT-US-SELLER-/251417416480
Has anyone ever used these guys or have any advice when it comes building etc?

:beers: