Friday’s Tech Tip featured the Rivera RockCrusher, a very cool power attenuator for guitar amps. But that’s not the only awesome volume-control solution from our friends at Rivera! To totally contain the amp’s volume, check out the Silent Sister! This isolation cabinet takes a completely different approach, letting you wind up your amplifier, but placing the speaker inside a sealed cabinet in order to minimize the volume. There’s a mic clip and gooseneck right inside the cabinet with the speaker, so you can get the sound out to your PA or studio rig — you can even use two mics at a time if you want. The Silent Sister features a Celestion GT12T-75 12″ speaker in a hardwood-core plywood cabinet.