Mini Rockcrusher Recording | Rivera AmplificationThe Mini Rockrec™ is a load box and speaker emulator that provides the safest load for your tube amp and gives the best sounding authentic analog guitar.mini rock crusher,MINI ROCK CRUSHER / GOLD SAMPLER !!! Find Gold Faster.ask .Aug 2, 2014 . If you like Crushing rocks down to get the Gold then this is a must for you. Mini Pocket Rock Crushers are great for Sampling ( Rocks ) in remote.