Rancilio Classe 5 S Compact 2 Group Semi Automatic Espresso Machine Anthracite Black 8 cup towers We recommend purchasing the complete We recommend purchasing the complete new version valve instead The M2 Tamper allows you to adjust the tamping pressure to suit your preferences while the Classe 5 S Compact uses independent heat exchangers per group—giving each group its own dedicated thermal path and reducing the chance of temperature interference during simultaneous pulls the Classe 5 S Compact gives you the reliability and consistency your customers will come back for—and the simplicity your team will appreciate from day one