The Tree Audio 3 in the Tree Dual allows you to configure your ultimate channel strips in a compact desktop design. The desktop unit holds six 500 series modules (modules not included). It includes full-featured custom meter modules (included) VU and PEAK. it features selectable linear faders or 24 position stepped potentiometers (1% resistors in 3 dB steps for final output). Bypass any or all modules with local switching. It includes an insert switch (insert additional equipment across final output). The headphone out (mono or stereo) includes level and mute control. Included are all-discrete Inward Connections VF600 amp blocks, Cinemag custom transformers. External linear power supply included. Handbuilt in the USA