4 channel adjustable ISO to ISO amplifier interface.

Use to install a new radio in a car that has an original fit amplifier that takes a pre amplified audio feed.

This interface converts the high level audio output of a new head unit to a low level pre amplified signal which will work with an amplifier.
4 adjustable channels for optimum audio quality, it has a built in ground loop isolator and filters to get the best sound from the amplifier.

2 channel high to Low Level adapter (FOR FRONT CHANNEL AMPLIFIERS AND INTERFACES) 

Includes a built in Ground Loop isolator to reduce electrical interference and on/off "Popping"

Active Plus adjustable 2 channel line out-put converter with 12volt amp turn on circuit .

Use for adding an amplifier to  standard speaker wires. (100W) max

A 2 Channel 80W adjustable high-to-low level subwoofer amplifier Line Output Converter (LOC) with a built-in amplifier remote trigger. This device is designed to convert 2 channels of speaker level audio into 2 channels of line level audio that can be used by car audio amplifiers.

This interface detects an audio signal and generates an amplifier turn on signal based on this, the amplifier turn on signal stays on for 60 seconds after the audio signal disappears. This allows the amplifier to stay turned on between tracks and during moments of silent audio.

Adjustable 2 channel line output converter with built in amplifier remote trigger.
Converts 2 channels of speaker level audio to 2 channels of line level audio.

Line output adapter for Audi cars with quadlock connection on the original head unit.