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API Audio 560 500 Series Graphic EQ Used  From API

Discrete Ten-band Graphic EQ boasting legendary API tone and build quality.

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API Audio

What We Think

Condition: Used, Very Good

Manufacturer's Description from API

Features

  • 10 bands of API proprietary equalization
  • Familiar graphics operation on one octave centers
  • 12 dB of boost/cut per band
  • "Proportional Q" narrows filter Q at extremes
  • Additional resolution within the ±4 region
  • Center detent for reliable reset
  • Silent bypass button
  • Based on the original 1969 API 560 EQ

 

Originally conceived for use in API consoles of the '60s and '70s, the 560 is a unique device designed to accomplish tasks that no other EQ can. Extremely fast to set and reset using accurate zero detents, the curve shaping potential of the 560 remains unmatched. With a wide range of 500 mounting options, from racks to consoles, the 560 proves an invaluable asset to all critical performance applications. Based on API's original 560 EQ, the current production 560 has improved resolution in the ±4 dB area and possesses our exclusive circuitry and proprietary components, including the API 2520 Op Amp.

The extraordinary headroom made possible with the 2520 offers consistent analog performance even when using radical EQ curves. Of course, the 2520's ability to drive low impedance loads is key when it is paired with API's custom output transformers. The results are quite audible with better low frequency reproduction and tighter imaging, which gives you that legendary API "punch in your gut" sound.

The 10 precision EQ bands make the 560 ideal for signal sweetening and room tuning. A great companion to a parametric EQ, the 560 utilizes API's unique "Proportional Q" design introduced during the '60s. This design intuitively widens the filter bandwidth at lower boost/cut levels and narrows it at higher settings. Additionally, boost and cut characteristics are identical, allowing previous actions to be undone if desired.

Reliable, durable and uniform, the API 560 EQ delivers that "one-of-a-kind API sound" with precision easy set filtering and high headroom in a compact package. If you want the sound of classic American music in an easy-to-set graphic EQ package, you want the API 560.

API Audio

About Manufacturer

API (Automated Processes, Inc.) is world famous for its all-discrete audio products: studio and broadcast mixing consoles, and a full line of rack mount mic preamps, equalizers and processors. It all began with a dream. It was 1968. The company: Automated Processes Inc., formed by men with a vision. Best known for their now legendary "2520 amplifier", this unique amp has been and will continue to be the heart of all API discrete products. It continues to provide reliability and sonic purity unmatched by the competition. The resulting console met the needs of the music, commercial and broadcast industry. API became the leading audio broadcast console manufacturer for radio and television networks and high profile stations. In addition, recording studios, large and small, began using API.....and receiving rave reviews from engineers and producers. There are over 700 API consoles across the nation and around the world, including the three major networks. Over thirty years later, many of these consoles are still in daily use in some of the most prestigious recording and broadcast facilities in the world because, to date, there are few, if any consoles of equal sound quality at a cost-effective price.

Specifications

Specifications

Number of Bands:

10

Filter Type:

Proportional Q, Octave entered, Continuously Adjustable Level

Filter Frequency Centers:

31, 63, 125, 250, 500, 1kHz, 2kHz, 4kHz, 8kHz, 16kHz

Filter Boost/Cut:

+/- 12 dB

Filter Slope:

12 dB per Octave at full boost or cut

Input Impedance:

20k Resistive, Balanced

Output Impedance:

Less than 85 Ohms

Nominal Levels:

-15 to +15 dBu

Clipping Level:

Better than +28 dBu

Frequency Response:

+0, -.25, 30 Hz to 20kHz

Noise:

-95 dBu EQ Out, -90 dBu EQ In, Unweighted 20 to 20kHz

Distortion:

.05% max, @ +20 dBu Output

Connectors:

15 position .156 sp edge connector

Power Requirements:

± 12/18 Volts/DC @ 60 ma.

Rack Frame and Power

Supply Options:

Fits 500V (10 slot rack, requires API 200PS Power Supply, 500H

(2 slot rack, internal power supply), 500b "lunchbox®" (4 slot

portable rack with internal power supply), API Legacy Consoles

and vintage API Classic Consoles.

Size:

1.5" X 5.25" X 6.75" Deep

Size (Boxed for Shipping):

4.5" X 6.5" X 10.25"

Actual Weight:

1.61 lbs.

Shipping Weight:

2.03 lbs.

 

Downloads

Action

Name

Description

560 Setup Sheet

560 Brochure