Your technical rider is not a list of "nice-to-haves"; it's a contract that ensures you can perform your craft. If you play vinyl, you need specific turntables. If you use a hybrid setup, you need specific inputs. A professional DJ never "wings it" with the equipment.
The Vinyl Requirement: Isolation is Everything
If you play wax, your rider must emphasize isolation. In a loud club, feedback is the enemy. Specify Technics 1210s (MK2 or higher), Isonoe isolation feet, and a heavy booth. If the venue can't provide isolation, you can't play. Be firm about this; a set full of feedback ruins the experience for everyone.
The Mixer: Your Instrument
Don't just say "4-channel mixer." Specify the models you are comfortable with (e.g., Allen & Heath Xone:96 or Pioneer V10). The EQs and filters on different mixers behave differently. If you rely on the specific resonance of a Xone filter for your sound, you need that mixer in the booth. If they can't provide it, specify that you will bring your own and ensure there is space for it.
The "Booth Plot"
For more complex setups, include a visual "booth plot"—a simple diagram showing where your gear should go. Show where you need power, where you need your laptop stand, and where you need your external FX units. Visual diagrams are much harder to misinterpret than a bulleted list.