Compact programmable audio input selector and tone controller — PT2314-based module Key benefits Manage multiple audio sources without rewiring: accepts four stereo inputs and delivers one stereo (two-channel) output, so you can switch among devices like media players, TVs, and mixers effortlessly. Precise tone and level control: onboard PT2314 sound processor provides adjustable volume, treble, bass and mute for consistent, easy-to-tune audio across sources. Easy system integration and automation: full control via I2C lets you program all functions from common microcontrollers or control systems, enabling remote control, presets and automated source switching. What it does (functions) Four stereo inputs (four sets of R/L) and one stereo two-channel output for source selection. Volume control, treble and bass adjustment and mute functions handled by the PT2314 sound quality processor chip. I2C bus interface to program and automate all available functions from an external controller. Compatibility and integration Designed as a board-level audio processor/router that integrates with standard I2C host devices for software control and automation. Works with typical line-level stereo sources (CD players, media boxes, sound cards, auxiliary outputs) and standard downstream stereo amplifiers or powered speakers. Software programmability allows use in both manual and automated control systems without additional analog circuitry. Practical attributes Onboard PT2314 chip provides the audio-processing functions, minimizing external component requirements and simplifying wiring. Board-form implementation (module level) is suitable for mounting inside equipment racks, cabinets, or DIY enclosures. Functions are implemented digitally via I2C, offering repeatable settings and the ability to store or recall presets in a host controller. Performance and usability Centralized tone and level control ensures consistent audio character across multiple inputs while reducing the need for separate EQ or volume stages. Mute function allows quick silencing for testing, paging, or quiet transitions. I2C programmability enables smooth integration into remote-control panels, touchscreens, or automated sequences. Typical use scenarios Home or small commercial AV system: Switch among TV, streaming box, and CD player, while controlling overall volume and tone from a single controller or touchscreen. Custom audio product or kiosk: Integrate the module inside interactive displays or retail kiosks to manage multiple audio sources and provide operator-controlled or automated volume/tone adjustments. DIY audio projects and prototypes: Use with microcontrollers (I2C hosts) to build a configurable preamp/switcher with programmable presets, mute and tonal shaping. Why choose this module Consolidates source switching and basic sound shaping on a single board using the PT2314 processor. I2C control makes it simple to automate and integrate with modern control systems without adding analog control circuitry. Suitable for developers, integrators, and hobbyists who need a compact, programmable way to manage multiple stereo inputs and tailor output sound. Included functionality (as specified) Four stereo inputs, two-channel (stereo) output Volume, treble, bass adjustments, and mute I2C bus control for programming all functions Onboard PT2314 sound quality processor chip If you need a compact, programmable audio input selector with built-in tone and mute control and straightforward I2C integration, this PT2314-based module provides those core functions in a single board-level solution.