A good Preamp for ST70

We've rebuilt and updated a lot of PAS-3s and PAS-2s over the years- given it a new line stage, better parts, power supply regulation, stepped volume control and the like.

What's fun about that preamp is that if properly updated it can take on any modern high end preamp and give it a run for the money (of course it will not handle low output moving coil cartridges, but with a set of Jensen SUTs, you can manage that quite well too). Since you already have a modified ST-70, it might be something to consider.

Kollert and Hoopster, it seems to me that to do a proper update, its about $900.00. The power supplies are rebuilt, then the circuit boards are updated. The tone controls are removed and the EQ for the phono is updated and moved to the circuit board ( the stock unit has the EQ elements mounted on the selector switch). I like to install a high quality RCA connection for the phono, so the lower level input connectors are replaced. Finally the volume control is replaced with a stepped switch and regulation is added. The idea is to keep everything in the original chassis, without major modification to the chassis (otherwise you might as well start from scratch).