Primacoustic Razorblade Quadratic Residue Diffuser - Black - 24" x 48" x 8" Trumpet Mouthpieces When designing the TB12 Tone

When designing the TB12 Tone Beast Black our goal was to make a microphone preamplifier affordable and jam packed full of options

At the heart of the RTM10 is a pure aluminum ribbon tweeter

<=250 Ohms / transformer isolated

add sustain to guitars and fatten up your drums

Primacoustic Razorblade Quadratic Residue Diffuser - Black - 24" x 48" x 8" Trumpet Mouthpieces When designing the TB12 ToneThe Razorblade is a high performance quadratic residue diffuser (QRD*) based on a primitive root sequence that employs a grated array of 17 precisely calculated wells to break up and scatter acoustic energy to create a diffuse sound field. Originally developed by Schroeder, QRDs have long been considered to be one of the most effective forms of diffusion. A series of wells are mathematically arranged in such a fashion that sound waves entering the