tone boost tb-1

2 seperate korg tone boosters (or tonebursters) with toggle bypass

Apart from giving a fantastic chimey presence to guitars this is a marvelous feedback device, known to be a favourite of the late david tudor.  https://www.davidtudor.org/Electronics/eq.html

I confirmed from my initial experiments that it creates some marvelous feedbacks so I squeezed two into one little box