Presonus Tube P1B Compressor Plug-in Baritone & Euphonium Mouthpieces Built-in talkback mic and inputs

Built-in talkback mic and inputs for remote talkback and listenback

The unit shall be an eight input stereo mixer having separate  transformer-isolated balanced outputs for both left and right  channels

the FX outputs

These cables have XLR connectors with internal strain relief for rugged reliability and Oxygen-Free Copper (OFC) conductors for enhanced signal clarity

From the world's best-selling cymbal series

Presonus Tube P1B Compressor Plug-in Baritone & Euphonium Mouthpieces Built-in talkback mic and inputsIn general, the response time of optical compressors tends to soften the attack and release, which can smooth out uneven volume fluctuations. Emulating an all tube, optical design, the Tube P1B compressor delivers musicality, preserving the clarity of the signal even at the most extreme settings.