One the left side there's the Volume and Tuner.
On the right side is: LOW MID HIGH, each can go from -12 to +12
What is that? Is that the Treble/Bass?
And below that is AMF, which ranges from 80 to 10k
Clueless about that too.
Please help.
PS. It's Yamaha APX700 which uses the A.R.T pickup...