12au7 Selmer Echo Boost schematic

I have been toying with the idea of doing a booster based around the input section of an old echo unit for a while,  I found a schematic for a Selmer echo 200 where the input section looked very similar to the Valvecaster (apart from it uses an ecc83 valve rather than a 12au7).  So I made this schematic that uses elements of both circuits.  Have breadboarded it and it sounds good!  Nice tone and overdrives in a pleasant way with chords, also reacts well to playing dynamics.