B4 Buffer Pre for sale
Please see photos for schematic, build notes and BOM
So getting down to the last bits of a job lot that I bought and now have this B4 Buffer pre for sale. I think this was made through the Pinkfish Audio forum. Build quality ( not mine) is a bit Heath Robinson as a friend of mine used to say, I've tidied it up a little and replaced some miss matched input caps to 3.3 Wima mks2 caps, mounted the board to the case as it was just floating and had to drill a new hole for the volume control because of this (the extended shaft is wooden dowel). The soldering is good and the components are good quality. There are no output caps installed and the Dc offset is circa 5mv each side with no input.
The Psu is separate with an umbilical connecting, the ground could do with redoing but everything works OK. This puts out +/-23.5v from a home made on breadboard pcb there are 5 screws missing from the psu case (easily sourced).
I was going to keep this, install it in a new chassis with a new power supply pcb (which I'll include in sale) as I quite like the sound but I have just got too much stuff.
Please see photos in second post for the pre
£70 delivered to the UK only
Please see photos for schematic, build notes and BOM
So getting down to the last bits of a job lot that I bought and now have this B4 Buffer pre for sale. I think this was made through the Pinkfish Audio forum. Build quality ( not mine) is a bit Heath Robinson as a friend of mine used to say, I've tidied it up a little and replaced some miss matched input caps to 3.3 Wima mks2 caps, mounted the board to the case as it was just floating and had to drill a new hole for the volume control because of this (the extended shaft is wooden dowel). The soldering is good and the components are good quality. There are no output caps installed and the Dc offset is circa 5mv each side with no input.
The Psu is separate with an umbilical connecting, the ground could do with redoing but everything works OK. This puts out +/-23.5v from a home made on breadboard pcb there are 5 screws missing from the psu case (easily sourced).
I was going to keep this, install it in a new chassis with a new power supply pcb (which I'll include in sale) as I quite like the sound but I have just got too much stuff.
Please see photos in second post for the pre
£70 delivered to the UK only
