Key benefits and why you need this module Consolidates up to four stereo source devices into a single, switchable audio input with two-channel (stereo) output — ideal for systems that must manage multiple audio feeds without a bulky external preamp. Precise, remote-capable control: the onboard PT2314 sound quality processor combined with I2C control lets you program volume, treble, bass and mute from a microcontroller or control system for repeatable, reliable adjustments. Improves listening and system control: tone controls (treble and bass) let you tailor sound for room acoustics or source differences, and the mute function provides quick, safe silencing when needed. What it does (functions and performance) Four stereo inputs: accept four independent stereo source pairs for flexible routing of audio signals. Dual-channel outputs: delivers a stereo output suitable for downstream amplifiers or powered speakers. Onboard PT2314 chip: hardware sound quality processor that handles volume, balance and tone functions with consistent audio performance. I2C bus support: all functions (volume, bass, treble, mute, source selection) can be programmed and controlled over a standard I2C interface for integration with microcontrollers, DSPs, or automation systems. Controls supported: volume control, treble control, bass control, mute and other PT2314-supported functions accessible via I2C. Compatibility and integration Compatible with any controller or system that supports the standard I2C protocol, enabling straightforward integration into embedded projects, custom audio equipment, or automation setups. Intended to sit upstream of power amplifiers or active speakers as a programmable preamp/interface; verify connector and wiring compatibility with your hardware before installation. Suitable for developers and installers who need software-driven audio control without redesigning analog front-ends. Use cases and practical applications Custom home audio or multi-room systems: centralize multiple inputs (TV, streaming device, turntable preamp) and adjust tone and level centrally from a smart-home controller. DIY audio and embedded projects: integrate precise, programmable volume and tone control into Raspberry Pi, Arduino, or other microcontroller-based audio devices using the I2C interface. Small commercial AV installations: provide selectable stereo inputs and mute capability for conference rooms, classrooms, or kiosks where remote control and consistent audio levels are required. What makes this module stand out Hardware-level audio processing with the PT2314 chip for reliable tone and level control. Full programmability over a standard I2C bus so all settings can be controlled digitally and automated. Multiple stereo inputs with a clean, two-channel output path reduces the need for external switching or analog routing. Notes and considerations Confirm electrical and mechanical connection details (power, input/output connectors, and pinout) against your system requirements before installation. Because control is via I2C, ensure your controller supports the bus and can address the PT2314 module as needed. The module provides programmable preamp functions; a separate power amplifier or active speaker will be required to drive passive loudspeakers. Technical summary (as provided) Inputs: four sets of stereo inputs Outputs: dual-channel (stereo) output Processor: onboard PT2314 sound quality processor chip Control interface: I2C bus for programming all functions Functions supported: volume, treble, bass, mute, and other PT2314-supported controls