Andy Gray’s FireFly amp

The FireFly project was a very popular build at (which became some years ago).

Andy used the Amp Maker 190-0-190V power transformer for his build, and kindly sent photos in to show the true point-to-point layout he came up with. Note that it has a switch for using 12AU7 for around 1W or an ECC99 valve for around 2W.