4 channel High level ISO to Low Level RCA adapter

Converts speaker outputs to low level RCA/PHONO .

Ideal for connecting radios that do not  have pre outs or radios that have low voltage pre outs. To amplifiers.

Also includes ground loop isolators to prevent interference .

Has output level adjustments to match the required  input level  to the connected amplifier .

Not needed for head-units with 3v or greater RCA phono outputs