TDC-You is a handmade effects pedal brand produced by Studio You, a rehearsal and recording facility based in Suita, Osaka, Japan. Design, enclosure and PCB work, soldering, and assembly are all carried out in the studio's in-house workshop, and the pedals are known for point-to-point hand wiring, high-grade vintage components such as JRC4558DV op-amps and germanium transistors, and engraved enclosure lettering that doesn't wear off with use.

The lineup centers on guitar drive pedals — including the 001 Crunch Booster, 005 Classic Lead, 007 Creamy Drive, and 008 Mild Blues — alongside bass-focused tools like the 006 Bass Driver and the Bass DI, which was originally developed for the recording engineers at Studio You and pairs a vintage germanium transistor buffer with a custom output transformer. The brand has also collaborated with Moddict on the Console EQ4, a 4-channel 3-band EQ and unity mixer module.

TDC-You has 2 products cataloged on Equipboard, including Equalizer Effects Pedals and Bass Effects Pedals. Their gear is featured by 2 artists, with the strongest followings in Rock, Metal, and Jazz. Notable users include Takeshi Taneda and Yuji Adachi (You).