simon wrote: ↑Wed Apr 12, 2023 8:25 pm
What's in the box of tricks Steve (Ant)? I've been musing on a headphone amp but don't really know anything about them.
When I did it for SS amps, only needed a resistor divider to step down because the amps don't care that the 'load' is a higher impedance than speakers.
However can't do that with a valve amp with an OPT that has to be properly loaded so I would use two 10 or 20 Watt aluminium clad wireound resistors, screwed onto the case somewhere, and then have a double pole 2-way toggle switch to change over from speaker terminals to the resistors. The headphones jack had the resistor dividers same as for SS. Hope that helps.
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."