500 Series

• Wet / Dry control for precise parallel compression
• Variable attack setting from 20 to 800 microseconds
• Variable release setting from 50 milliseconds to 1.1 seconds
• 3-Stage high pass sidechain Filter: Off, 100 Hz, 200 Hz
• 3-Step ratio setting: 4:1, 12:1, 100:1 ("all in")
• True hardware bypass
• Four Vintage OPA1731s installed
• Balanced outputs with transformer
• Gain reduction meter with 20 LED segments
• Gold-plated printed circuit board
• Design: API Series 500 Format

• Carnhill transformer input and output
• Adjustable attack and release
• Controls for input/output and ratio
• VU meter
• Construction: 500 module

• Fully compatible with all 500's modules
• Power supply to 420 mA per slot

• Double triode tube 6386 LGP
• Transformerless input circuit
• Lundahl LL1517 output transformer
• Illuminated VU meter with switching from gain reduction to level display
• Clip LED (+24 dBu)
• Switchable hard/soft knee function
• Attack times of 0.25 milliseconds
• Release times automatic or adjustable from 12 milliseconds to 5 seconds
• Ratios adjustable from 2:1 to 20:1
• Mixable uncompressed and compressed signal
• Model: Module 500

• Completely balanced design from input to output
• VU meter
• Release: 0.1 - 4 s
• Attack: 10 - 300 ms
• Maximum gain: 35 dB
• Controls for gain, out, attack, threshold and release
• Format: 500 module

• API 500 Format
• Tape saturation emulator
• Trim control (+/-12 dB PreTape Level Control)
• Tape saturation effect can be set in a ·stepless manner
• Silk function (Silk Red & Silk Blue) can be set in a ·stepless manner
• Blend potentiometer determines the balance of Pre and Post-Tape signals
• The tape characteristic can be switched between 15 IPS and 30 IPS
• Drive Meter shows the Signal Level on the "Record Headf"
• Enclosure: API Serie 500 Rack Format

• API 500 Format
• Tape saturation emulator
• Trim control (+/-12 dB PreTape Level Control)
• Tape saturation effect can be set in a ·stepless manner
• Silk function (Silk Red & Silk Blue) can be set in a ·stepless manner
• Blend potentiometer determines the balance of Pre and Post-Tape signals
• The tape characteristic can be switched between 15 IPS and 30 IPS
• Drive Meter shows the Signal Level on the "Record Headf"
• Enclosure: API Serie 500 Rack Format

• FET 1176 Style Compressor
• Digitally controllable by VST / AAX plugin
• 1 channel
• Analogue circuitry digitally controlled
• Symmetric Carnhill input and output transformers
• A / B function
• Digital sidechain from the DAW to the compressor
• 4 touch-sensitive encoders
• Bypass switch
• VU / GR meters
• USB connection
• Incl. plugin for VST2 / VST3 / AU / AAX interface (PC / Mac)
• Construction: 500 series module

• 80 dB Class A microphone preamplifier
• Selectable input impedance
• Ideal for ribbon microphones
• 50 dB Class A line preamplifier
• Discrete Class A J-Fet DI input with high input impedance
• Class A single ended
• 2N3055 output stage
• 20dB pad switch
• Phase reverse and low cut
• Variable hi-pass filter 20 - 220 Hz
• +48 V phantom power switchable
• Output control
• Carnhill input and output transformer
• Construction: 500 modules

WES Audio Phoebe; 1-channel Class-A microphone / instrument / line preamplifier with digital recall in 500 module format; 100% analogue microphone / line preamplifier: +28 dBu headroom; Mic Gain up to 75 dB; Carnhill input and output transformers; LED meter for output signal with clip indication; +48V phantom power switchable; Phase Reverse switch; switchable input impedance (1200 / 3000 ohms); Iron Pad (passive output attenuation circuit with 1 dB step, after output transformer); all controls / analogue settings are fully controllable via WesAudio GCon DAW plugin; connectors: 1x mic / instrument / line input XLR / 6.3 mm jack combo, mini-USB; design: 500 module; dimensions: 38 x 133 x 145 mm (WxHxD)

• Carnhill transformers
• Input impedance: 10 kOhm
• Output impedance: Less than 75 Ohm
• +6 to -20 dB Class A Line preamp
• HF: +/- 16 dB shelving (10, 12, 16 or 20 kHz adjustable)
• LF +/- 16 dB shelving (35, 60, 110 or 220 Hz adjustable)
• MF +/- 18 dB peak (adjustable centre frequency 0.36, 0.7, 1.6, 3.2, 4.8 and 7.2 kHz)
• Fixed Q
• Max. gain: 6 dB
• Design: Module 500

• High pass switchable: 25 / 50 / 100 Hz
• Low pass switchable: 9 / 12 / 15 kHz
• Peak LED
• Every band can be adjusted via rotary control
• Fader for adjusting the level of the selected frequencies
• Design: 2 Slot 500 Series module

Zähl Rack 500 Dual; 500 series desktop case with 2 slots ; compatible with API 500 standard; connections per slot: 1 x XLR In and 1 x XLR Out; 48V phantom power switchable; Power Thru connector for power supply of a second Zähl Rack 500 Dual; incl. external power supply PSU 500-44; One power supply can supply two Rack 500 Dual

• Mono EQ in the 500 series API format
• Gain indicator with signal LED
• Bypass switch
• Electronically balanced inputs / outputs
• Audio processing Insert Design: in connection with the 1073 LB Preamp, allows the use in the insertion path of the signal chain
• Fully shielded housing for max. Shielding against electromagnetic influences

• Mono EQ in the 500 series API format
• Gain indicator with signal LED
• Bypass switch
• Electronically balanced inputs / outputs
• Audio processing Insert Design: in connection with the 1073 LB Preamp, allows the use in the insertion path of the signal chain
• Fully shielded housing for max. Shielding against electromagnetic influences

• Low, lo-mid, hi-mid and hi EQ bands with gain and frequency controls
• Low and high band "peaking" switch
• EQ on / off switch
• Incl. the well-known Harrison high and low pass filters
• Internal jumper allows the selection of "vintage" feedback design or no feedback
• Design: API Series 500 Format
• Requires a 500 slot

• The 500 series API format
• Based on the well-known Classic 1073
• Legendary Class A design Neve sound
• Gain with LED signal
• + 5/-20 dB level control with integrated phantom power switch, phase and impedance switch
• XLR /jack combo connector
• Microphone gain from -80 dB to -20 dB
• Line gain -20 dB to +10 dB in 5 dB steps
• Frequency range: ±0.5 dB 20 Hz to 20 kHz, -3 dB to 40 kHz, trafosym i/os

• The 500 series API format
• Based on the well-known Classic 1073
• Legendary Class A design Neve sound
• Gain with LED signal
• + 5/-20 dB level control with integrated phantom power switch, phase and impedance switch
• XLR /jack combo connector
• Microphone gain from -80 dB to -20 dB
• Line gain -20 dB to +10 dB in 5 dB steps
• Frequency range: ±0.5 dB 20 Hz to 20 kHz, -3 dB to 40 kHz, trafosym i/os