With a big, bold preamp and the flexibility of variable Silk/Texture, Rupert Neve designed the 511 to combine classic sonics with 500-series value. Incorporating the 517’s powerful preamp, the 5012’s universally useful sweepable high pass filter, and the transformer-saturating power of a variable silk circuit derived from our flagship Portico II Channel. There are countless 500 Series modules made today. These are the only ones designed by Mr. Rupert Neve.