I’ve four Decca London cartridges. Maroon with line contact tip, Gold with line contact, Garrot Bros Gold with line contact, Super Gold with Paratrace. All have Decapods except Maroon. Output is easily 5mV.
Each one has its own particular flavor and behavior. Once you go Decca, it’s hard to listen to anything else. The combination of idler, Decca, tubes and electrostatics just gels for me.