HDA-4100 Preamplifier Outputs Explained

URC HDA devices and software provide countless options to configure and optimize audio settings to achieve performance and flexibility for almost any application.

One of those features is the HDA-4100 Preamplifier Outputs

This article provides a better understanding when using the Preamplifier Outputs on the HDA-4100 and details the procedure for configuring the Preamplifier Output settings when using Accelerator 3 or TC Flex 2 software.


HDA Preamplifier Outputs “A” and “B” need to be assigned to one of the HDA-4100’s zones. Preamplifier Outputs “A” and “B” cannot be used as an independent zone output. The Preamplifier Outputs require assignment to an HDA-4100 zone and shall "mock" that zone in audio play.

This is done in Step 3: Add URC Devices in both Accelerator 3 and TC Flex 2 software by right-clicking on the HDA-8100 amplifier in the Project Tree and selecting “Properties”:


Once the Preamplifier Outputs have been assigned to a zone, the audio properties of the Preamplifier Output match what is set for that zone in Accelerator Step 9e and TC Flex 2 Step 7e. (see image below)


If a “Full Range” Line Level audio output from the Preamplifier Output is desired, set the “Max Volume” parameter to “100%” and the “Turn On Volume” to “Preset – 100%”.

Do not connect speakers to the zone’s speaker output for the zone that is assigned to this preamplifier output. The zone’s volume output is fixed at 100% - this will most likely damage any speaker connected to this zone. (see pic below)



Additional Information & Resources:

To learn more about HDA products and programming, please see the HDA Programmers Guide or the Accelerator 3 online Programming Guide.

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