I use 32 ohm grado headphones.
From what I have seen online, the sp8 has an output impedance of 3500 ohms (? not sure if this is correct).
Would this be as simple as getting a transformer to go from 3500 to 32 off of the main output? I am thinking I could install a switch on the front, and run the main out to the switch, one side of which would go to the main outs, the other side to the transformer and from there to the 1/4 inch stereo jack.
I have only picked out transformers for building amps, so I am not sure exactly what I would need to do this, or if it would sound good.
Is there a simple circuit I should look into? I thought about building a cmoy or something like that and installing it after the balance control with a switch similar to the above... I know this would give me hum problems because this circuit uses a virtual ground, and I havent had time to do the research to find out how to convert the circuit to normal ground. I am thinking of using the 12vdc line off of the sp8 transformer.
I know I could just build an external headphone amp kit, but that would be too easy now wouldn't it?