Hi, I use NE5534 opamps in custom mixers and preamps, they drive power audio power amps (high impedance inputs, level around 0dBu). The distance between my gear and the power stuff has suddenly increased to somewhere around 20 metres. I can run screened cable, but I'm wondering whether the capacitance involved in that length of screened lead could lead to instability in the opamps. Is there anything I should be considering, like maybe a parallel RL network, such as is used on some power amp outputs. If I should, typically what values would be appropriate.
BTW, this is band sound, it just has to sound OK, silly specs for THD and frequency response don't apply.