This hybrid Tone Bender MKII is a more budget conscious offering from Sola Sound (Macari’s) via David Main of D*A*M and it uses NPN transistors, which is a bit of a bonus.

SOLA SOUND TONE BENDER MKII PROFESSIONAL SILICON HYBRID – VERO LAYOUT

Watch out for the hard to spot cuts under the 470 ohm and 100 ohm resistors.