Effect and Signal Processors

API Audio 512v Preamp

Microphone preamp with 65 dB gain
Line and instrument pre-amplification with 45 dB gain
Button for 3: 1 output transformer

API Audio 500VPR

10 Module slots for standard module 500 from different vendors
Inputs and outputs via XLR
Incl. external power supply L200PS

API Audio 2500+

API 2520 op-amp
Adjustable threshold -20db to + 10db
Selectable ratio, attack and release times

API Audio 5500 Dual Equalizer

Classic 550B Design
Switchable level range for finer resolution of complex sound sources or mastering
Output stage implemented with transmitter (+30 dBm)

API Audio 550A Discrete 3 Band EQ

Discrete 3 band EQ from the 500 Series
7 centre frequencies selectable per band
12 dB of boost / cut per band

API Audio 500-8P Lunchbox

Accepts up to max. 8 x 500 standard modules
250 mA per slot
Internal 48V phantom power

API Audio 512c Mic Pre

The 500 series
65 dB gain
Microphone input on the front and back

API Audio 560 Graphic EQ

Design: 500 module
12 dB boost/but per band
Midpoint filter frequencies: 31 Hz, 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4 kHz, 8 kHz, 16 kHz

API Audio 550b Discrete 4 Band EQ

From the 500 series
7 centre frequencies selectable per band
12 dB of boost / cut per band

API Audio 312 Mic Pre

Max. 69 dB gain
Totally discrete circuit design with 2520 op-amp
Proprietary AP2516 input transformer

API Audio 527A Compressor Limiter

Uses the discrete operational amplifiers 2510 and 2520
Controllable Threshold, Attack, Release, Ratio and Output
10 segement VU-Gain-Reductionpeak Meter

API Audio Select SV14 4-Band EQ

Based on the classic APSI 562 EQ
Continuous control of frequency and gain
12 dB boost/cut per band

API Audio 565 Filter Bank

Low-pass filter: 500 to 20,000 Hz (-6 or -12 dB slope)
High-pass filter: 20 to 400 Hz (-12 or -18 dB slope)
Variable notch filter: 20 to 20,000 Hz

API Audio Rack Ears 500-6B/8B HC

For 6-Slot Lunchbox 500-6B/8B as well as 8B

API Audio Blank Panel 500er 5B1

For 500 10slot, 6slot API Lunchbox and 1608

API Audio Rack Ears 500-6B

For 6-Slot Lunchbox 500-6B (old version)

API Audio Select SV12 Compressor

Original analogue compressor circuit for the ATI Paragon console
Variable threshold, ratio and make-up gain controls
LED display

API Audio 525 Discrete Compressor

Exact reissue of the original API 525 compressor from the 70s
Peak detecting feedback compressor / limiter, adjustable threshold and output level
Analog VU meter for gain reduction

API Audio 505 Di Direct Input

Front-side Hi-Z input 6.3 mm jack
Thru output: 6.3 mm Jack
Gain control with 55 dB gain

API Audio Rack Ears 500-6B Lunch B-Stock

For 6-Slot Lunchbox 500-6B/8B and 8B

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