Compact desktop line mixer?

[JohnRoberts]

There are modern op amps that drive lower than 600 ohms, of course do the math.

The aux send pots could be somewhat higher impedance without compromising performance, likewise the aux bus send resistors could be higher impedance.

JR

 

[ruffrecords]

The NE5534 is not unity gain stable so you cannot use it as a unity gain non-inverting buffer. Since noise is not really an issue for line level you could just swap the 2 x NE5534 for a single NE5532 which is unity gain stable.

Cheers

Ian