Gladen HTL4

The GLADEN HTL4 is a high-quality, four-channel, high-low adapter designed for the clean integration of retrofit amplifiers into modern vehicle audio systems. Designed for connection to OEM radios and factory amplifiers, it enables low-loss conversion of speaker signals to RCA signals.
Its galvanically isolated inputs reliably suppress interference, such as ground loops or high-frequency interference. This creates a stable signal base for clean further processing in the connected amplifier or digital signal processor (DSP).
The GLADEN HTL4 has integrated remote signal generation that works via BTL and signal detection at the input. This feature allows external amplifiers to switch on automatically and reliably.
Additionally, the GLADEN HTL4 can operate passively, enabling signal conversion without a connected 12-volt power supply. However, remote signal generation is not possible in this case. This feature provides maximum flexibility for system integration, making the HTL4 suitable for simple or powerless installation situations.
Thanks to its four-channel design, it is ideal for front and rear signals or more complex, multi-channel OEM systems. The HTL4 stands for system-compliant, reliable, and sonically neutral integration in demanding vehicle audio installations.