Originally conceived for use in API Consoles of the 60's and 70's, the API 560 re-issue is a unique device designed to accomplish tasks that no other EQ can do. It delivers that "one-of-a-kind" API sound, precision easy set filtering, and high headroom in a very small package. Extremely fast to set and reset using accurate zero detents, the curve shaping potential of the 560 is unmatched. At home both in field recording and the studio environment, this "new-old" version is a re-issue of the original 560 with improved resolution in the critical area of ±4 dB. Incorporating API's exclusive circuitry and proprietary components (such as the legendary 2520 op-amp), the re-issue of the 560 artfully blends the past with present—layout with function.

The API 560 was created to fit all appplications for the professional engineer. For most of the 70's and 80's, every remote recording console that API manufactured used this versitile graphic EQ. It is also ideal for studio and live sound applications, where a professional result is required. This re-issue design has been taken from the original blue prints and spec control drawings from the API archives.

The API Model 500-6B Lunchbox is a six position rack designed to accept all API standard 5.25" X 1.5" modules. This allows an engineer the flexibility to bring along specialized EQ effects to any situation: 550A, 550B or 560. The Lunchbox is self-powered, with a rear panel selected AC voltage switch, and a removable power cord. The input/output jacks are XLR. The Lunchbox comes standard with a +48 volt internal phantom power supply, bussed to pin 15 for interface with the API 512C. API makes several modules for the 500-6B, such as the 512C mic preamp, the 525 compressor, the 560 Graphic EQ, and the 550B four band EQ. Combinations of these modules make perfect stereo recording packages (two 512C's and two 550B's) or vocalist's box, (one 512C, two EQ's and one 525 compressor).

The API Model 500VPR is powered externally by a tri-polar power supply and is designed to accept API standard format 5.25" X 1.5" modules. The 500VPR is internally wired for PIN 2 hot, and comes with the API L200PS. The input/output jacks are both XLRs. The 500VPR can hold up to ten API modules. API makes several modules to fit this rack, including the 550A, 550B, 560, 525, and 512C. Like all API products, the 500VPR rack enjoys API's standard 5 year warranty.

Note that older API 560A series equalizers used pin 15 for a "direct output" and must be disabled on the 560A circuit board edge connector by cutting a trace. This will eliminate 48 volts from damaging the 560A series equalizers.