Philip Le Riche

Brilliant - many thanks Holger and Marcel. In fact I'd simply copied and pasted the input socket from my full schematic in Eagle and in the process the pins had lost their correct mapping. I had 2 voltage sources in the original feeding the left and right channels but I can see that one wired to both tip and ring in the connector model might have been better. The 1G resistors were simply to prevent it compaining about unconnected pins in some iterations of the circuit.

I'm designing an equalised stereo headphone amplifier to try and replicate the high frequency boost profile given by my hearing aids. I've simulated it successfully with SPICE under Eagle but in order to better understand it I've created a new schematic with just one gyrator instead of 3 for each channel (L+R). But the SPICE simulation consistently gives an error: "Error(parse.c--checkvalid): VOUT: no such vector" when I do an AC sweep. I've double-checked that all pins are connected, in particular...

Works for me too - great work. Thanks! Regards - Philip On 7 Apr 2014, at 04:34,...

Hi Andrey - Very glad that's helped locate it - it's been a tough one. And I can...

Hi Andrey - Sorry it's taken a few days to get around to this, but very willing to...

Err, forgot the .cfg file. In fact I had been using an older version (3.32.01 I think)...

Hi Rony - Thank you for your continued efforts. The fact that you can't reproduce...

Hi Rony - Sorry - the new version 3.32.01 dated 28/12/13 still seems to manifest...