A company with a name related to heat refuses to share their schematics which is pretty funny.
Had a fairly new but noisy 76 from them in (which is maybe a rev D 1176 but with a BA283 style line amp? maybe?) -- turns out the BC184C transistors in the output stage were sketchy which is no surprise considering they've been obsolete for a long time (counterfeits? re-labeled mystery Chinese part?). Replaced with MPSA18 -- problem solved.
More importantly: the "Rubycon" capacitors in the unit looked preeeettyyy weird! The printed sleeves don't look remotely like any authentic Rubycon YXA caps I have ever received from Mouser or Digikey. Perhaps they should look into where their factories are sourcing these components.
When I contacted them for schematics or sevice info, they kind of just hinted at the fact that I should look up a stock 1176 schematic and figure it out from there lol... even though that isn't what their product is.