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API 550a

Regular price €1.360,00

Price includes VAT
VAT free price: €1.105,69
Usually ships to you within 1-2 weeks.
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The 550a is a 500 series version of the original and classic late 1960s Saul Walker design. An industry standard, this EQ has been an essential part of many API's consoles and was used on many important recordings ever since.

The 550a provides reciprocal equalization at 21 points in 5 steps of boost to a maximum of 12dB of gain at each point. The fifteen equalization points are divided into three overlapping ranges. The high and low frequency ranges are individually selectable as either peaking or shelving, and a band-pass filter may be inserted independently of all other selected equalization settings. Frequency ranges and boost/cut are selected by three dual-concentric switches, and a pushbutton "in" switch allows the EQ to be silently introduced to the signal path. A small toggle switch is used to insert the band-pass filter into the 550A.

The combination of Walker's incomparable 2520 op amp and his "Proportional Q" circuitry gives the 550A user an uncomplicated way to generate acoustically superior equalization.

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