I can't think what the pair of switches at the bottom of each channel do? unless they are inpedence matching?
As to the age of the mixer, the LED meters would tend to rule out much chance of it being from the 70's and more likely, its from the 80's. Not that that's a guarantee of any sound quality differences.
Cheers!
Fair enough!No, I own amps and old mixers from the 70's that had the same type of led meters. An Oz built 20 channel Jands JM6 and a 12 channel Jands JM5. The old Jands J600 power amps also had led meters, I bought one new in 1978, however the LEDs are not very accurate LOL. Just a side note, Jands was a company set up in the very late 1960's to make PA gear, on of the founders was the late Bruce Jackson who was very enervative and way ahead of his time. Jands today mainly make lighting gear.
Alan