Bass pre-amp based on Orange AD200B Mkll, replacing the original unit tubes for more convenient dual opamps that make it more friendly to your pedal board while keeping a great tone with deep, dynamic low-end and a creamy yet focused mid-range.
The Lemon Bass is an original circuit developed by Bajaman for FreeStompboxes, inspired by the now-iconic Orange AD200B MkII bass amplifier, emulating its gain structure by replacing the tubes from the original head for more convenient OpAmps, making it pedal-friendly while keeping its wide spectrum of vintage and modern tones.
This modern classic can cover every tonal spectrum you need, from Vintage Soul to Classic Rock, high-fidelity Funk to grinding Metal.
In this model, you can place Q1* as an SMD transistor or the classic through-hole version. Choose just one of both. Remember, the SMD J201 are more consistent quality-wise than its through-hole counterpart, which is plagued by fake Chinese counterfeits.
For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum.