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.
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
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.
API 560 Brochure