Korg introduces two new build-it-yourself Nutube-driven Nu:Tekt pedals – the TR-S tube amp emulator and HD-S Distortion | Guitar World
Die Mini-Röhren-Revolution: Nutube Pedale! | GITARRE & BASS
Vox launches the Valvenergy line of Nutube-fitted pedals
Guitar Pedal X - GPX Blog - Vox's Valvenergy NuTube Mystic Edge AC30 style and Copperhead Drive JCM800 style Overdrive / Preamps are fairly decent budget options for those genres
Vox Valve Energy Copperhead Drive Pedal W/NuTube – Chicago Music Exchange
Vox VECE Valvenergy Cutting Edge High Gain Pedal W/NuTube – Easy Music Center
Design of a Korg Nutube Amplifier Part 2: Prototype