Hooking up headphones to a SS-amp is pretty simple. Just solder together a voltage divider and plug your phones to that one and your exclusive 10k phones and ears will live a while longer. But when it comes to tube PP-amps, how to do it?
I and many before me has been arguing with a guy who hooks up his 60 Ohm phones to the output of a PP-amp. We try to explain the simple fact that the output transformer not only transforms the load impedance of the tubes to a much lower impedance that fits the speakers better, but it also transforms the output impedance to the load impedance of the tubes and that may cause new and interesting problems.
I may, however be wrong, but considering the fact you never turn on a PP-amp without load also indicates that hooking up a load that is far too "wrong" will also cause problems. So what does the forum say? How wice is it to connect your headphones to the speaker connectors of your tube amp?