You now have a third choice of operational amplifiers for the Muffsy Phono Preamp, the NJM2068D from New Japan Radio (datasheet, pdf).

The NJM2068D is a great op amp that sits between the NE5532 and OPA2134 performance wise. It draws less current, so it will be the best choice for battery powered Muf...

In my quest to make sure that you get the highest quality components for your phono stage,  I have received new capacitors for the Muffsy Power Supply.

The ones delivered with the kit until now have been a very tight fit, so these have 2mm smaller diameter. These new 16mm capacitors will make it even...