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$ 565 .25
Your Savings: $ 29 .75 Msrp: $ 595 .00
No interest if paid in full within 12 months Learn more
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Please note: this item is available for purchase in the United States only.

API 565 500 Series Discrete Filter Set

500 Series Discrete Filter Set
MFR# 565

Product Description

Sometimes the difference between “good” and “great” in the studio involves just the right amount of filtering. Whether you need a notch filter or adjustable high and low pass filters, the API 565 Discrete Filter Module can bring out the best in your audio recording. Fully equipped with both classic and contemporary filtering technology, the API Audio 565 EQ Filter is specifically engineered to help solve your filtering problems, all with a classic API touch.


The API 565 500 Series Filter Set is any studio’s secret weapon. Creative filtering can make the difference between average and amazing. With an incisive notch filter and adjustable high and low pass filters, the API Audio 565 Filter can make any recording shine. By offering both classic and modern filtering options, the 565 Discrete Filter Set is the easy solution to every studio’s filtering problems. Invested in the 500 Series format? Check out what the amazing API Audio 565 EQ Filter Module can do for you.


When breaking down classic recordings, it’s apparent how important an EQ filter can be. More often than not, cutting into a specific frequency is often more effective than boosting in other parts of the spectrum. In the ‘70s, a popular kick drum trick was a 12dB cut at 400Hz on an API 550 EQ. 

Now API Audio gives you a tool designed for filtration with surgical precision and it’s got the classic API analog mojo. With the highpass, lowpass, and a variable notch filter with an adjustable Q that is also fully sweepable between 20Hz and 20kHz, the API 565 Discrete Filter Set is your new secret weapon. Feel free to put one or more in any current 500 Series rack.


  • A must-have tool designed for filtration with surgical precision
  • Highpass and lowpass, with slope control
  • Variable notch filter with adjustable Q, sweepable
  • Highpass: 500Hz–20kHz, -6 or -12dB slope
  • Traditional API all-discrete circuit design
  • Lowpass: 20Hz–400Hz, -12 or -18dB slope from 20Hz–20kHz
  • Transformer balanced output to +28dBu
  • Individual bypass switches for each filter section
  • Uses API’s renowned 2520 and 2510 op-amps
  • Discrete transistor buffers as used in API’s other 550 series equalizers

Product Specifications

Condition New
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot

Product Reviews

5 out of 5 stars.
Review Count (3)

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Best, cleanest hi-pass filter ive heard. And the notch filter can be used creatively (phaser) as well as surgically.

By Michael P on December 23, 2022

Best in the business.

By Bombz P on June 17, 2022


By Michael P on May 31, 2022

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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!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
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.
Martin C.
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.
Phil T.
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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