Jet City Amplification announced the new RRV series of Analog Tube Replacements designed by Roberts RetroValves.
![[NAMM] Jet City Roberts RetroValve RRV](https://img.audiofanzine.com/img/product/normal/1/5/156600.jpg?fm=pjpg&w=334&h=243&fit=contain&s=415bfc8fdf449bb47a9d992fd6035786)