This is a user installed option, just power the unit down and pop into place!
The ”VINTAGE OPA” is our take on the classical vintage opamp Melcor 1731 – the predecessor to the 2520. The sound character can be described as smooth and punchy. The “VINTAGE OPA” is pin compatible, plug & play ready for the 6X-500, 7X-500 and PEX-500 Rev.2 and 18Xs MkII.
(not compatible with Rev 1 Lindell 500 units, contact us if any confusion)