Audiolab 8000A MM stage

[davidsrsb]

Inspired by some positive comments about the Audiolab 8000A phono stage, I simulated the circuit as found in the manual on electrotanya and found a strange result.
If the circuit is correct, it has a small upper bass cut, a huge 14dB deep bass boost and a rumble filter

 

[PRR]

It would be nice to point-to the specific schematic in question.

The one I found: by inspection and by simulation, there is no 35Hz bump. This could happen if the internal amplifier had DC-blocking, but this one does not.

 

[davidsrsb]

That is the one that I am simulating. Going back to double check my model

 

[davidsrsb]

An error in the schematic, once fixed I get this, which is very good. The tiniest cut in high treble and a sensible rumble filter.
Some very non-standard capacitor values used in this design