
PASS LABS - ALEPH-2
Circuit diagram:

Aleph 2 user manual - User manual from Pass Labs (103 KB)
Aleph 2 service manual - Service manual from Pass Labs (521 KB)
PCB:
All parts for one channel-monoblock are located on 3 separate PCBs.
PCBs are made of FR-4 fiberglass material with Cu-50 mikron + Pb track overlay (tinplated), laser drilled, with two sided blue soldermask (instead of green), and with white component overlay.
Also, they comes with partlist, stuffing guide and circuit diagrams.