Hi all,
I have modified the preamp to take a 6BY5 rectifier because it sounds better and you can source 6BY5 tubes for $12 or less. If you own one of my preamps and pay the return shipping I will modify it for you and provide a 6BY5 tube for $75. If you own an SP14 kit or any other version of this preamp, please DO NOT JUST PLUG A 6BY5 TUBE INTO YOUR PREAMP AS YOU WILL DAMAGE IT AND IT WILL NOT WORK! This modification is something I developed for my customers only. I will NOT share the details and I will NOT modify any preamp that I did not build. Sorry, but this is what sets my gear apart from the kit versions. I have gotten notes from a few people who have built the kit version and asked for the recipe. No, sorry, but I do not share any of my mods.
I have modified the preamp to take a 6BY5 rectifier because it sounds better and you can source 6BY5 tubes for $12 or less. If you own one of my preamps and pay the return shipping I will modify it for you and provide a 6BY5 tube for $75. If you own an SP14 kit or any other version of this preamp, please DO NOT JUST PLUG A 6BY5 TUBE INTO YOUR PREAMP AS YOU WILL DAMAGE IT AND IT WILL NOT WORK! This modification is something I developed for my customers only. I will NOT share the details and I will NOT modify any preamp that I did not build. Sorry, but this is what sets my gear apart from the kit versions. I have gotten notes from a few people who have built the kit version and asked for the recipe. No, sorry, but I do not share any of my mods.