
BALANCED LINE STAGE
Circuit diagram:

Balanced Line Stage manual - Construction manual from Pass Diy (451 KB)
POWER SUPPLY FOR BLS (BOSOZ) PREAMPLIFIER:
POWER BLS -
Power supply for the Balanced Line Stage (BOSOZ) preamplifier
PCB:
PCB is designed as dual mono construction - two completely separate channels on single PCB .
It is 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, it comes with the partlist, stuffing guide and circuit diagram.

PCB size (for two channel construction) is 169 mm x 100 mm ….. ( 6,7 in x 4 in )
Professional made printed circuit boards are available for this preamplifier at cost :
1 Pcb. ….. Euro 28.00
2 Pcb. ….. Euro 49.00
( Worldwide shipping is included in all prices )
Having Questions ?