ROG Condor cab simulator questions

[sajy_ho]

Hi, I'm new to this forum so please forgive my rookie questions!
I've recently built a 6W MOSFET practice amp from this link:http://www.hawestv.com/amp_projects/amp_solid_tube/art_guitar_amp/MOSFET_out_4_IRF510.GIF
and that sounds awsome as a SS amp. So I wanted to add a line out for that, so I can connec Ruby amp to that for headphone playing. So my search for a way to do that led me to ROG Condor Cab Simulator: http://www.runoffgroove.com/condor.png
My questions are:
1. Where should I place the Condor cab sim; before or after the power amp? I'm using a ROG Thunderchief as dirty channel for preamp, and also that MOSFET tone is awsome so I wish I could keep it!
2. Do I need a headphone amp after that or just I can drive my 32R headphone with that cab simulator?
3. Do I need need a dummy load for that MOSFETs just like tubes? or I can just go without it?
Thank you guys and sorry for my terrible English!

[sajy_ho]

Any thoughts?

[ggedamed]

1. If you want to keep the MOSFETs in the chain, you can take the output of the MOSFET amp through a resistive divider and then Condor. Then through a headphone amp, because...
2. Condor load driving capability is its op amp's load driving capability. I don't think you want to use power op amps in the Condor and I don't know how they'll behave in the Condor, so you'll need a headphone amp to drive your headphones.
3. Yes and no. The MOSFET amp itself will be fine without a dummy load, but the sound will be different and its output voltage swing will be too much for the input JFET from the Condor. You have to decrease it somehow.

In the end it will eat gobs of power. I'm not sure about the sound. But who knows...

[sajy_ho]

Thank you for great explanation. How about using a simple voltage divider like this on its own: http://www.sophtamps.ca/images/headphonebox/headphonebox1.4.jpg
I took it from Stephane's website and he designed it for tube amps. Can I use the voltage divider and dummy load in the line out section for feeding the Condor?

[ggedamed]

You sure can.

[psychedelicfish]

Thank you for great explanation. How about using a simple voltage divider like this on its own: http://www.sophtamps.ca/images/headphonebox/headphonebox1.4.jpg
I took it from Stephane's website and he designed it for tube amps. Can I use the voltage divider and dummy load in the line out section for feeding the Condor?

If you do use that schematic, R1 should be 4 ohms, not 8, unless you've had good results with an 8 ohm speaker and just the MOSFET amp.

[sajy_ho]

Thanks guys, I'm heading to buy the parts.