I had a go first at a mini-gyrator board using SMD. Blimey, it’s hard work to get all these crammed into such a small footprint.
I did a quick test with a D3a and worked fine at 100V/10mA (low voltage of course). It was +35dB flat up until a couple of Mhz. Even the over-current LED works!
Footprint is as small as you can get: 45mm x 25mm 
More to report later!
Fantastic! FWIW, I would love to have the option to purchase SMT mu-follower boards. I work with SMT enough that I’m pretty comfortable with it. Unless there are some ultra tiny 0205 etc.
Hi Ale, what is the output impedance in case of D3a with 1omA, is it low enough to drive a 600r RIAA?
Hi, it’s very low and you will need adding a series resistor to drive the network. There is an entry in my blog with the formula. Please search