These adaptors allow you to install an aftermarket amplifier to your factory head unit. These devices take the speaker level outputs from the head unit and reduce the signal to a level of which an aftermarket amplifier can use without overloading its inputs.

APU8SUM Hi-lo level signal summing interface


Complete integration of aftermarket audio components into Vehicle OEM system. Sums and balances multiple signals from Factory Stereo, sums up to four Speaker-level stereo pairs down to single stereo RCA low-level output.

  • Built in AUX input for connection to Portable Audio devices and four line-level stereo RCA outputs connect to Amplifier.
  • Balance levels from multiple speaker-level sources

Max Voltage in: 40V RMS
Max Aux-in Voltage: 40V RMS
Signal to Noise Ratio: Channels 1-4: 90dB
Frequency Response: 20-22,000 Hz
Gain Range: Channels 1-4: -30dB to +4dB
2 Amp Fuse
Dimensions: 140mm D X 268mm W X 36mm H


Manuals & Firmware