Key benefits and features - Output load requirement: Requires a downstream power amplifier to drive the speakers, suitable for integrated karaoke or PA setups. - Product name: Karaoke Hallboard - Chip supply: Dual 12V AC power supply for reliable operation in typical karaoke systems - Wiring guidance: Lin GND indicates the left channel in the audio input signal, the ground line, and the right channel, simplifying connection and channel identification Why you need this - Provides standardized stereo input wiring for karaoke applications, reducing miswiring and setup time. - Designed to work with an external post-stage power amplifier, letting you pair with your existing amplification and speaker system. - Dual 12V AC supply supports stable performance in standard karaoke room environments. 2-3 practical use scenarios - Home karaoke setup: Connect to your existing amplifier and speakers to deliver clear left and right channel audio for singing and playback. - Small venue or event space: Use as part of a modular rack with a separate power amplifier to manage stereo input channels efficiently. - Karaoke bar or classroom: Integrate with a PA system to route L/R channels through a dedicated amplifier for reliable, repeatable performances. Notes - This description preserves the original specifications: Output load requires a downstream power amplifier; product name is Karaoke Hallboard; chip supply is dual 12V AC; wiring identifies left input, ground, and right input via Lin GND.