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New & Current Vintage King Card Holders

$ 3,615 .00
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GOLY PG Porter Grinder Mastering EQ

2x4 band mastering EQ based on the highly regarded “NetEQ” with updated input and output sections, high and low pass filters, circuit layout, and the Q circuit


Product Description

The GOLY Porter Grinder Mastering EQ is based on the highly regarded “NetEQ”, by the late Barry Porter. After many years of listening tinkering with the design, building, and listening, and adjusting, and listening, and doing custom units with various solutions -- and listening -- the only thing that remains unchanged is the parallel filter section. The in and output sections, the high and low pass filters, the layout of the circuit, the Q circuit, and the whole implementation of it has been redesigned, and when the listening tests were done, GOLY took a really deep dive into the details and precision of all the controls. The result is still a Porter at its core, but also, very much a Grinder.


  • 2x4 band equalizer
  • Six Q settings per mid band, five Q settings per low/high band
  • Shelving mode on high and low bands (switchable on the Q)
  • L-R/M-S switchable interface
  • Global bypass
  • 23 step Blore-Edwards switches for gain and Frequency control
  • Gain of 0.5 dB steps and a max of 5.5dB cut or boost per band
  • Split L-R/M-S master gain
  • Matched to better than 1% relative tolerance
  • Modern, precision in- & output section

Product Specifications

Condition New

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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