INCLUDES 1 PAIR OF DYNACO 400 410 416 NEW PC-28 DRIVER BOARDS WITH ALL COMPONENTS AS REQUESTED. LIMITED TIME ITEM!! THESE DOUBLE SIDED PC BOARDS ARE TO THE LATEST REV FOR USE  IN THE ST-400, ST-416, OR ST-410 AND INCLUDES THE EXTRA POLYPROPYLENE BYPASS CAPS IN THE COUPLING STAGES. ALL HIGH QUALITY PARTS INCLUDED AS FOLLOWS: 48 SEMICONDUCTORS, 44 CAPACITORS, 90 RESISTORS, AND 4 TRIMMER POTENTIOMETERS. ALSO INCLUDED ARE 8 NEW MICA INSULATORS AND 8 INSULATING BUSHINGS FOR THE TIP TRANSISTORS.YOU MUST RECLAIM THE ANGLE HEATSINK AND HARDWARE FOR REUSE WITH THIS DRIVER BOARD. BLANK BOARDS ARE ALSO AVAILABLE IF WANTED. THIS KIT WILL REBUILD TWO CHANNELS. I DO HAVE HAND DRAWN HEATSINK SPECIFICATIONS IF NEEDED. AS ALWAYS, THANKS FOR LOOKING!

NOTE: COMES WITH PARTS LIST, SCHEMATIC OF LATEST REV PC-28 BOARD, AND PICTORIALSHOWING PARTS LOCATION. VALUES OF 680pF AND LESS ARE MURATA 1000VOLT MIN 5% CONFORMALLY COATED CERAMIC CAPACITORS. ELECTROLYTICS ARE NICHICON  RADIAL AUDIO GRADE OR BETTER.C201 IS NON-POLAR NICHICON ELECTROLYIC WHICH REPLACES THE OLD TANTALUM. 

ALL OTHERS CAPACITORS ARE XICON, RUBYCON, OR CORNELL-DUBILIER  250 TO 630V 5% OR 10% POLYPROPYLENES.

FEATURES                                                     

• Low dissipation factor

• High insulation resistance

• High stability of capacitance and DF

versus temperature and frequency

• Self-healing properties

• Non-inductive