SOUND TOWN SWM15-MAX - VERSATILE COMPATBILITY: The Sound Town SWM15-MAX features HD (TV Arc), Bluetooth, Optical (Toslink), and 3.5mm AUX inputs & outputs, ensuring it works with smart TVs, home receivers, and sound bars. It also has 1/4" mono jacks for dynamic mics and instruments such as electric guitars | HD AUDIO RETURN CHANNEL: To use the HD Audio Return Channel, activate your TV's CEC and set the audio format to PCM. This function extracts audio from your smart TV to the mixer, blending music and vocals for output to sound bars or amplifiers (HDMI cable required) | ENHANCED EFFECT CONTROL: The mixer offers an EFFECT MODE for selecting effects and an EFFECT LEVEL for adjustments. It supports vocal (REVERB & ECHO) and instrument (TUNE & GUITAR) inputs, plus a 'vocal cut' mode for karaoke | EASY SETUP: The SWM15-MAX system allows for 16 frequency selections and has independent volume controls, supporting 2 wireless or wired mics (not included) within a 100 feet range, ideal for karaoke setups | CONNECTION DIAGRAM/LOW MIC VOLUME TROUBLESHOOT: For TV setup, follow the "How to Connect" guide, enable the TV's ARC function, and select external speakers. For low mic volume, increase the volume on your TV, sound bar, and receiver, then adjust the mixer's "MUSIC" volume to 20%-30% and fine-tune with the "W/MIC" knob