Thank you for viewing! This is the Thunderbolt model of the Antelope Audio Zen Go, an audio interface I used in my home studio. It was used only at home and is in good condition both functionally and cosmetically. It comes from a smoke-free, pet-free environment and has been well-cared for. It features low latency thanks to the Thunderbolt connection and the high-resolution sound characteristic of Antelope Audio. You can use it with confidence for vocal recording, instrument recording, and mixing. Accessories: Main unit only (no outer box or cable included) Activation (registration) has been released, so you can register as a new user and use it without any problems. ○ SYNERGY CORE Effects Included 2 Preamps (GyrafGyratecIX, BA-31) 4 Equalizers (incl. VEQ-1A, VMEQ-5) 5 Compressors & Limiters (incl. Stay-Levin, FET-A76, VCA160) 22 Guitar Amps & Cabs (incl.Bluelux1x12, Tube Guitar Amp) 2 Special Processing Effects (Expander, Noise Gate) 1 Reverb Effect (Auraverb) 1 Guitar Tuner (A-Tuner) ○ Major differences between USB and TB versions • (Zen Go USB version) Equipped with a USB 2.0 type C port, allowing for up to 8 input/8 output channels in popular DAWs using custom drivers for macOS and Windows. • (Zen Go Thunderbolt version) Equipped with a Thunderbolt™ 3 port, allowing for up to 16 input/16 output channels in popular DAWs using custom drivers for macOS and Windows. Thank you for your interest.