Phabio, the one that got away

[jwin615]

But you only need two of them…

Or 4 lm13700s, 28 more resistors, 2 matched pairs of transistors(guessing that's the 6 pin IC, judging by other threads on these).

 

[Guardians of the analog]

Or 4 lm13700s, 28 more resistors, 2 matched pairs of transistors(guessing that's the 6 pin IC, judging by other threads on these).

plus a 1590XX enclosure and some hefty R&D