Hi: The speaker, singular, takes a standard 1/4" telephone plug.
One key jack is a standard telephone jack just to the right of the headphone
jack on the front panel, the other is a 1/8" stereo jack on the back. Both
jacks are wired tip/dit; ring/dah; and body ground.
The Phone jack is next to the mike jack, just to the left of the key jack.
There was a label warning on the front, Stereo headphones only. MONO phones
will short the two audio amps together and result in failure. The panoramic
recieve is great, by the way.
And to answer an unasked question, the automatic tuner is very fast and
extremely quiet. No memories, but it's so fast you really don't need
Congratulations on the purchase. It's by far the best rig I have ever had
here, and I have had TOL line rigs from YaKenCom. Well worth the purchase
73 Pete Allen AC5E