Subtotal: $4,000.00
- Accepts all digital sources with SPDIF format (stereo PCM only)
- Input sampling rate from 28 kHz to 96 kHz
- High jitter immunity
- Automatic signal detection
- Device-specific side panel included in delivery
The HELIX Extension Card OPTICAL IN extends HELIX devices with an optical input in SPDIF format (stereo PCM only) for connecting digital signal sources with sampling rates up to 96 kHz.
The integration of car hifi components into existing OEM sound systems becomes more and more challenging as today’s factory radios either lack of preamplifier outputs or incorporate intelligent speaker diagnosis features. That’s where the new Helix AAC.3 comes into play.
The smartest high-low converter in its class
Forget about error messages or loss of features (e.g. the fader) – the integrated ADEP.3 circuit cleverly “bypasses” the speaker diagnosis in factory car radios. Distorted sounds and increased THD which may occur with conventional high-low converters are prevented as well. The good thing is that the ADEP.3 doesn’t load the car radio’s amp unnecessarily and therefore reduces its current draw by up to 70 %.
The ideal cable harness that dramatically simplifies the connection of additional devices to factory car radios.
The Easy Plug Cable (EPC 5.2) feeds our HELIX amplifier P SIX DSP / MK2 and HELIX V EIGHT DSP with the four channel highlevel (speaker level input) signals or our digital signal processors like HELIX DSP PRO / MK2, HELIX DSP.2, HELIX DSP or MATCH DSP with supply voltage from the car radio and the highlevel signals to ensure they turn on and off when your radio does.
An added benefit: Not even a remote signal is required for activating the above listed devices.
The universal subwoofer cable remote control SRC is compatible with all HELIX amplifiers which have a remote control input and allows adjusting the volume of the connected subwoofer.
As soon as the remote control is connected to the device it will be activated automatically. On all 4-channel amplifiers it solely affectes the output channels C & D if those are configured to “bandpass” mode.
The HELIX Extension Card OPTICAL IN extends HELIX devices with an optical input in SPDIF format (stereo PCM only) for connecting digital signal sources with sampling rates up to 96 kHz.




