Steve:
The amplifier connects to the headphone jack.? On the Jack there are switched outputs that connect to the QMX's internal headphone amplifier, these switched outputs disconnect when headphones are inserted.
I used both Left and Right switched outputs, each with a? 1K Ohm resistor (value not critical) in series with each of the outputs to connect to the little amplifiers input.
It? works like a charm, now looking forward to Hans' future SSB mode.?