We have repaired, rebuilt and modified many of these over the years. Its my favorite vintage preamp, and IMO keeps up easily with most modern preamps once refurbished.
The electrolytic capacitors are all shot. Do not try to use them.
The selenium rectifier should not be used either. Replace it with a silicon rectifier. Consider HEXFREDs for the high voltage power supply.
Although some of the resistors and caps in that unit are collectible, the fact is that there have been advances in that area and there are newer parts that sound better (although the EQ caps should be fine). So its not a bad idea to consider new resistors and caps. In the phono section, some of the resistors require precision, and that fact should not be taken lightly- if you replace them, use the best parts you can find.
The electrolytic capacitors are all shot. Do not try to use them.
The selenium rectifier should not be used either. Replace it with a silicon rectifier. Consider HEXFREDs for the high voltage power supply.
Although some of the resistors and caps in that unit are collectible, the fact is that there have been advances in that area and there are newer parts that sound better (although the EQ caps should be fine). So its not a bad idea to consider new resistors and caps. In the phono section, some of the resistors require precision, and that fact should not be taken lightly- if you replace them, use the best parts you can find.