The SA-609 MK2 applies Stam iterative refinement process to their 33609 recreation, incorporating component and power supply upgrades for improved performance on stereo bus and mastering applications.

SA-609 MK2
2020–2022
The Stam Audio SA-609 MK2 refines their Neve 33609 recreation with component upgrades and circuit improvements. This revision maintains the dual-stage dynamics—diode bridge compressor plus FET limiter—while offering enhanced reliability and closer adherence to vintage 33609 behavior. The MK2 improvements bring the stereo bus compressor closer to the sound of well-maintained vintage units. (Discontinued — superseded by SA-609+)
