The upgraded SJ definitely gives more authority and bass to things like the 1266 TCs or Sus. It really changes things. I highly recommend a PSU upgrade. The SJ is what I did, but perhaps other options will work as well. The SJ is huge, so you gotta factor that in. However, stock DAVE cannot drive the TCs or Sus well. The upgraded PSU allow for proper amplification of the TCs and Sus. You could upgrade your PSU and be happy with the DAVE output. Without the upgraded PSU, you will be disappointed
Has anyone compared the SJ mod to the Farad Mod? I’m guessing the SJ mod is better (much like there is improvement with the dc-3, dc-4 and then arc 6), but I imagine we’re far into diminishing returns at some point. Where is the sweet spot?