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Waves Puigchild Compressor/Limiter  From Waves

Rack Mount Compressor/Limiter from Waves

Waves Digital

Waves PuigChild 660 & 670 Compressor and Limiter - AES 2011

This Fairchild 670 Clone from Waves Digital is based off of the Jack Joseph Puig plugin created by waves. This demo at AES 2011 shows the hardware version, a rack mountable compressor and limiter based off of the exact same algorithm from the plugin version. To learn more about this new hardware from the plugin giant Waves, call SoundPure today: 919.682.5552.

  • Signal Chain
    • Waves Puigchild Compressor/Limiter

Manufacturer's Description from Waves

Modeled on a rare vintage Fairchild 670 from the personal collection of Grammy® award-winning producer/engineer Jack Joseph Puig, the PuigChild hardware compressor faithfully recreates the unmistakable sound of the original. Featuring dual mono, linked, and lateral vertical stereo modes, 16/24-bit digital I/O, and outstanding AD/DA converters, housed in a rugged 2U rack unit, the PuigChild is a world-class compressor — in the studio or on the road.

Among audio professionals, the Fairchild 670 is the most coveted of all compressors, not only because of its unique color and character, but also its rarity and price: With fewer than 100 units ever made, original Fairchilds routinely go for tens of thousands of dollars on the vintage market. With 20 vacuum tubes and 4 hand-wired transformers in a hefty 6 rack-space chassis, these hard-to-find units weigh in at a robust 65 lbs. Both the stereo 670 and its mono counterpart the Fairchild 660 use single push-pull amplification stages with extremely high control voltages. Both variable-mu limiters are unique in that they use tubes for gain reduction as well as amplification. Compression takes place directly in the audio path, rather than being routed to a separate circuit.

When Waves set out to model the Fairchild, we turned to producer/engineer Jack Joseph Puig, renowned among gear aficionados for his extensive collection of hand-picked, meticulously-maintained outboard equipment. Granting us exclusive access to his finest unit, Jack worked closely with Waves, making sure we captured every nuance of its distinctive harmonic complexity.

Manufactured with the same impeccable standards and attention to detail as our acclaimed MaxxBCL, the PuigChild is a remarkable engineering achievement that truly represents the best of the best.


  • Legendary Fairchild sound in a road-ready hardware unit
  • Dual mono, linked, and lateral vertical stereo modes
  • State-of-the-art 24-bit converters
  • Analog and digital connectors for all popular formats
  • 125 dB dynamic range
  • Switchable sampling rates up to 96kHz
Waves Digital

About Manufacturer

Waves is the leading provider of DSP solutions for audio professionals in content creation and MaxxTM audio signal processing solutions for consumer electronics. Waves award-winning audio processor plug-ins are the technology and market share leader for thousands of audio professionals in content creation. These plug-ins utilize Waves proprietary DSP algorithms based on Waves psychoacoustic expertise. Waves' Maxx technology dramatically enhances audio performance in consumer applications and has been licensed to several leading audio companies including Microsoft, Motorola, Samsung and Sanyo.Yamaha also purchased a minority position in Waves in 2000. The Waves mission is to develop and provide solutions that enables unparalleled sonic quality for all audio applications.



Analog input stage:

Maximum Analog Input Gain: 24 dBu
Input Impedance, Balanced Input: 32 kOhm @ 1kHz

ADC (@ 44.1 kHz)

Frequency response: 10 Hz - 24 kHz / -0.1 dB @ 10 Hz ÷ 0.01 @ 24k THD + Noise: < 0.0006 % 
(-104 dB) @ 1 kHz -1dBFS

THD 3rd Harmonic: -126 dBFS @1 kHz, -10 dBFS

DAC (@44.1kHz):

Frequency response: 20 Hz-21 kHz / - 0.4 dB @ 20 Hz ÷ 0.05 dB @ 21 kHz Noise: < -108 dB (unweighted)

THD+Noise: < 0.003% (-90 dB) @ 1 kHz, -1dBFS Maximum Output: +24 dBu
Output Impedance: 600 ohms @ 1 kHz
Crosstalk: < -102 dB (1 kHz, 0 dBFS )

Analog Output Stage

Maximum Output: +24 dBu
Output Impedance 600 Ohms

Latency (in Samples)


  • 4 @ 44.1, 48K sampling rates
  • 5 @ 88.2, 96K sampling rates


  • 95 @ 44.1, 48K sampling rates
  • 58 @ 88.2, 96K sampling rates

Front Panel

I/O selector: Analog, AES (XLR), S/PDIF (RCA/Optical) Sync: Internal, Digital, external word sync
Sample Rates: 44.1, 48, 88.2, 96 kHz
Input Gain: -20dB to 0 dB
Threshold: 0 to 10 (0.1 steps)
Time Constant: 1, 2, 3, 4, 5, 6
Mains: Off, 50 Hz, 60 Hz
Link: Left/Right, Linked, Lat/Ver
Output: -18 dB to 18 dB (0.1 steps)
Power: On/Off

Back Panel

Analog input: XLR/1/4” Jack Combo Input Lift/Ground: Toggle Switch
Analog output: Balanced XLR, unbalanced 1/4” 2-conductor phone plug Output Lift/Ground: Toggle Switch
Digital input/output: AES (XLR), S/PDIF (RCA), S/PDIF (Optical) SPDIF output selector: Toggle Switch
External word clock: BNC connector
Word Clock Termination: Toggle Switch – 75 Ohm (On) / 1M Ohm (Off)
Main power supply: Linear Power Supply Adjustable Fuse: 100VAC, 110VAC, 220VAC, 240VAC. 50-60Hz


Box Width (behind the front panel): Metric - 440 mm, Imperial - 17 3/8” Height: Metric- 85 mm, Imperial- 3 3/8”
Depth: Metric- 220 mm, Imperial- 8 5/8” 2U 19” Standard Rackmount
PuigChild’s front panel contains four 6mm diameter bolt fastening holes Weight: 4.0kg (8.8 pounds)





PuigChild Manual