Analogue Summing Mixer 16 channels API 2510 Input operational amplifier API 2520 OpAmps Insert send/return on each channel 2 stereo programme buses: Mix-A and Mix-B Each channel can be assigned to Mix-A and Mix-B Continuously variable panning with centre detent 31-step, rasterised volume control 4-segment LED level meter Analogue VU meter Format: 19" / 2 U Connections: 2 line inputs: Sub-D25 (channel 1-8 and channel 9-16) 2 Insert Send: Sub-D25 2 Insert Return: Sub-D25 2 line inputs: XLR 2 line outputs Mix-A: XLR with insert Send / Return: 6.3 mm jack 2 line outputs Mix-B: XLR with insert Send / Return: 6.3 mm jack

Microphone / Instrument / Line Preamp- Microphone preamp with 65 dB gain- Line and instrument pre-amplification with 45 dB gain- Button for 3: 1 output transformer- LED VU meter- 20 dB Pad switch- Output volume control- + 48V phantom power switchable- Combo input XLR / 6.3 mm jack on the front- Circuit design with API 2520 operational amplifiers- Type: 500 Module

Graphic 10-Band Equaliser- 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- Bypass switch- Based on the original 1969 API 560 EQ

FET Compressor in 500 Series Module Format Attack adjustable from 15 microseconds to 15 milliseconds 7 adjustable release modes (0.05 to 2.0 seconds) Ceiling control simultaneously controls threshold and make-up gain Analogue gain reduction VU meter in 1970s retro style 2520 and 2510 operational amplifiers Aiscrete audio path circuitry Proprietary API output transformer Hardware bypass Balanced input and output Format: 500-series module

Classic 550B Design- Switchable level range for finer resolution of complex sound sources or mastering- Output stage implemented with transmitter (+30 dBm)- High and low peak/shelf filters- Balanced inputs and outputs (XLR)- Additional unbalanced input TRS each channel- Internal power adapter- With hardwire bypass

Effect Pedal for Electric Guitar- 3-Band EQ- 3 Fixed frequencies: 200 Hz / 1.5 kHz / 5 kHz with +/- 15dB adjustable gain- Switchable gain level from clean boost to overdrive- Buffered Bypass- -20 dB Pad for output- Selectable peak/shelf for the upper frequency range- OpAmp API 2510- OpAmp overdrive circuit- API transformer output- Max. 40 dB Gain- Power supply via external power supply unit 9 - 18V DC / 100mA, connection 2.1 x 5.5 mm (not included)- 1 Hi-Z instrument input 6.3 mm unbalanced- 1 Unbalanced output: 6.3 mm- Dimensions (W x L x H): approx. 11.68 x 9.65 x 7.6 cm- Weight: 0.68 kg

Equalizer- Discrete 3 band EQ from the 500 Series- 7 centre frequencies selectable per band- 12 dB of boost / cut per band- EQ band 1 and 3 in selectable shelf / peak characteristics- Traditional API circuit design- Headroom up to 30 dB- In / Out switch- Requires API Lunchbox 500-6B or 500VPR 10Slot Rack

Effect Pedal for Electric Bass- API 2510 OpAmp- API output transformer- 3-Band EQ with +/-15 dB gain each- OpAmp overdrive circuit- 40 dB gain- -20 dB output attenuation- Bypass switch- Hi-Z input: 6.3 mm jack- Hi-Z output: 6.3 mm jack- Power supply via external power supply 9 -18V DC / 100mA, 2.1 x 5.5 mm (not included)- Dimensions: approx. 11.68 x 9.65 x 7.6 cm- Weight: 0.79 kg

Legacy Stereo Bus Compressor with blend function- API 2520 op-amp- Adjustable threshold -20db to + 10db- Selectable ratio, attack and release times- Patented highpass filter in the detector path- With variable link between left and right channel- Selectable "old" and "new" envelope curve- Typical behaviour as with API525, 1176 and Fairchild- Auto or manual "Gain make up"- Sidechain inputs- Ideal sum compressor

Mic Preamp- The 500 series- 65 dB gain- Microphone input on the front and back- Line / instrument input jack- 20 dB pad-switch- 48V phantom and phase switchable- LED-VU meter- Lownoise preamp (-129dB)- Circuit design with the API2510 and 2520 operational amplifiers- Requires API Lunchbox 500-6B or 500VPR 10Slot rack

4-Channel Microphone, Instrument and Line Preamplifier- Classic API circuit design- API 2520 OP amplifier- Switchable 3:1 Output transformer for each channel- Switchable 48 V Phantom Power, -20 dB pad and polarity for each channel- LED Meter as well as adjustable gain and output volume for each channel- 4 XLR Inputs- 4 Hi-Z Inputs: 6.3 mm Jack- 4 XLR Outputs- Design: 19" / 1 U

Project Recording and Mixing Console 8 Input channels with microphone preamps 8 x 500 module module bays (one per input channel) Direct Out on each input channel Integrated stereo bus compressor assignable to the program bus or input channel 1-4 Instrument input to channel 1-4 Sum channels: 16 (24 during the mix) 0dB bypass switch for each sum channel 4-Segment LED meter on each summing channel Two VU meters Stereo program bus with masterfader Insert and external input 2 x Stereo and 2 x mono aux-sends / bus Stereo cue send / bus as well as headphone system PFL, AFL and solo-in-place mode with stereo solo bus Monitor section supports two monitor systems Talkback Line input: max. 28 dBu ( 34 dBu w / PAD) Microphone input: 30 dB to 65 dB ( 10 dB to 45 dB w / PAD) Instrument input: 11 dB to 46 dB Pad: 20 dB microphone, -6 dB line Direct Out: max. 28 dBu, 20 Hz to 50 kHz 0 / -0.5 dB Output: max. 28 dBu, signal to noise ratio max. -118 dB, 20 Hz to 50 kHz /- 0.5 dB Balanced inputs and outputs Integrated power supply Dimensions (W x H x D): 82.5 x 67 x 33.5 cm Weight: 40.8 kg

Discrete 4-band equalizer- From the 500 series- 7 centre frequencies selectable per band- 12 dB of boost / cut per band- EQ band 1 and 4 in selectable shelf / peak characteristics- Traditional API circuit design- Headroom up to 30 dB- In / Out switch- Reissue of the 1967 API 550EQ with an additional band- Requires the API Lunchbox 500-6B or 500 VPR slot rack

Microphone Preamplifier for the 500 Series- Max. 69 dB gain- Totally discrete circuit design with 2520 op-amp- Proprietary AP2516 input transformer- 20 dB Pad switch- Switchable 48 V phantom power- VU Meter- Peak LED- Design: 500 Series module

Uses the discrete operational amplifiers 2510 and 2520- Controllable Threshold, Attack, Release, Ratio and Output- 10 segement VU-Gain-Reductionpeak Meter- LinkSwitch- Switchable feed-forward or feedback compression- THRUST switch for frequency dependent Sideschain- Trafosym. exit- Hardware bypass- Requires API Lunchbox 500-6B or 500VPR 10 Slot Rack

Effect Pedal for Electric Guitar- VCA compressor guitar pedal- API output transformer- Adjustable attack and release times- Wet/Dry-Blend control- Selectable feedback / feedforward compressor types- Buffered Bypass- Ratio (sustain): varies from 1:1 to 20:1 depending on the setting of the compressor control- Attack (switched): fast (1 ms) or slow (10 ms)- Release (switched): fast (300 ms) or slow (1 s)- Type (switched): New (feed-forward), Old (feed-back)- Input gain control: 9 dB - 30 dB variable- Power supply via external power supply unit 9 - 18V DC / 100mA, 2.1 x 5.5 mm (not included)- 1 Hi-Z instrument input: 6.3 mm unbalanced- 1 Output: 6.3 mm unbalanced- Dimmensions: approx. 11.68 x 9.65 x 7.6 cm- Weight: 0.79 kg

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- Type: 500 Module

Housing for 500 Series Modules- Accepts up to max. 8 x 500 standard modules- 250 mA per slot- Internal 48V phantom power- Integrated power supply from 100 - 250 Volt switchable- Rugged steel housing- Rubber feet and carrying handle- 19" Rack kit optional (not included, available under Art.309198)

Based on the classic APSI 562 EQ- Continuous control of frequency and gain- 12 dB boost/cut per band- All 4 bands are peak/dipping parametric configuration- Balanced output with custom transformer- High headroom +24 dB clip level- Designed to fit API's 500 VPR rack or Lunchbox