API 550A

Modeled on the late 1960's legend, the API 550A EQ provides reciprocal equalization at 15 points in 5 steps of boost divided into three overlapping ranges. The high and low frequency ranges are individually selectable as either peaking or shelving, and a band-pass filter can be inserted independently of all other settings. The 550A is a uniquely powerful equalizer with that one-of-a-kind API sound.

Features :

• 5 selected frequency centers per band
• Reciprocal and repeatable filtering
• Maximum 12 dB of boost/cut per band in 2-3 dB steps
• "Proportional Q" narrows filter Q at extremes
• High headroom +30 dB clip level
• Up to 24bit, 192kHz resolution (TDM 24/96 only)
• Mono and Stereo components
• Supports TDM, RTAS, Audio Suite, VST, AU
• PC and Mac compatible

Controls

HF Filter Gain : -12dB to +12dB

HF Filter Frequency : 5KHz, 7KHz, 10KHz, 12.5KHz and 15KHz

MF Bell Filter Gain : -12dB to +12dB

MF Bell Filter Frequency : 0.4KHz, 0.8KHz, 1.5KHz, 3KHz and 5KHz

LF Filter Gain : -12dB to +12dB

LF Filter Frequency : 50Hz, 100Hz, 200Hz, 300Hz and 400Hz

Filter On/Off : 50Hz to 15KHz Band Pass Filter

LF Filter Type : Low Shelf or Bell

HF Filter Type : Hi Shelf or Bell

EQ IN : On/Off

VU Meters : -30dB to 0dB With Clip indicator

Output Controls

• Analog On/Off
• Phase Polarity Reverse On/Off
• Output Gain -18dB to +18dB
• Trim Output Gain Adjustment

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