PIP-USP4/CN (discontinued)

Programmable Input Processor

The Crown PIP-USP4 is a 4th generation DSP-based PIP™ (Programmable Input Processor) input module for CTs Series two channel amplifiers. The USP4 connects to an Ethernet network allowing it to be remotely controlled and monitored via System Architect. In addition, the USP4 allows the transport of real-time digital audio via CobraNet™ or AES.

The USP4 is a HiQnet™ series component and connects to the audio control/monitor network using 100Mb* Ethernet hardware (switches, Network Interface Cards, and cables). The audio signal is available over the same 100Mb Ethernet network, providing a simple to install, single plug solution for audio distribution, control, and monitoring.

The USP4's OMNIDRIVEHD™ processor gives the user an enormous amount of digital signal processing. LevelMAX™ limiters, proprietary FIR and IIR filters, audio routing, faders, meters, polarity & mute, compressors, delays, error reporting and load monitoring are all available. Built in noise and sine-wave generators provide noise masking and test capabilities. The enhanced AUX port allows users to interface with the USP4 to provide additional external control and monitoring.

Offering crisp clear sound and the widest dynamic range possible, the PIP-USP4 provides unprecedented power and flexibility in one compact – and very affordable – module.The USP4 can be installed in any CTs two channel amplifier.

The USP4 requires HARMAN Pro System Architect software.  



  • Ultra smooth processing by onboard high-definition BSS OMNIDRIVEHD DSP with 24-bit,192 kHz Analog Devices SHARC A/D and D/A converters and true 96 kHz processing
  • World-class FIR and IIR filters
  • LevelMAX™ peak, RMS and transducer thermal voltage power limiters combine for a smooth and accurate response, better sound, and higher usable SPL
  • 100Mb Ethernet single-plug solution for CobraNet™ audio, and HiQnet™ control and monitoring
  • Auto Standby for increased energy efficiency
  • Multiple Input Options Include: Analog, CobraNet™, and AES3 Digital Audio
  • Digital Audio On/Off Ramp allows users to send pre or post processed analog signal out of the module to adjacent amplifiers
  • Amplifier output monitor using the Foldback control through either the CobraNet™
  • SLM (Sweep Load Monitoring) with system-level diagnostics
  • 64 assignable filters with 9 different filter types including all-pass filters
  • Over 2 seconds of delay available per channel
  • Input compressors for each channel
  • Full error reporting
  • Firmware upgrades via the network
  • 25 user selectable presets
  • Reliable FLASH memory backup of all parameters
  • Three Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its specifications (Effective May 1, 2011 when installed into a CTs Series amplifier the warranty is extended to five years.)
  • Ambient Leveler senses the ambient sound level of a room via one if its loudspeakers


  Version Language Size Uploaded
file type icon PIP-USP4/CN Cut Sheet
updated: Sep 2023
    167 KB Sep 2023
file type icon PIP-USP4/CN Owner's Manual
updated: Sep 2023
    1.68 MB Sep 2023
Technical Papers
file type icon LevelMax Guide for USP4
updated: Oct 2020
    170 KB Oct 2020
platform icon IQwic
version 8.01, updated: Aug 2016
8.01     8.89 MB Aug 2016
platform icon IQwic
version 8.10, updated: Aug 2016
8.10     9.22 MB Aug 2016
platform icon IQwic
version 8.10a, updated: Aug 2016
8.10a     9.25 MB Aug 2016
platform icon IQwic
version 8.22, updated: Aug 2016
8.22     9.94 MB Aug 2016
platform icon IQwic
version 8.23, updated: Aug 2016
8.23     10.1 MB Aug 2016
platform icon HiQnet Audio Architect™
updated: Dec 2021
    Dec 2021
Declaration Of Conformities
file type icon PIP-Lite, PIP-USP4 Declaration of Conformity
updated: Aug 2015
    79.3 KB Aug 2015

If any of the links above result in strange characters in your browser, please right-click the file to save it to your computer.


Internal Controls A Reset/Preset switch, accessible with a straightended paper clip through the PIP panel, selects the next user preset if pressed for less than 2 seconds, resets the PIP to preset "0" if pressed for more than 2 seconds.
Balanced Audio Input Connectors Two 3-pin removable barrier-strip connectors
Balanced Audio Output Connector Two 3-pin removable barrier-strip connectors
AES3/EBU Input Connector One 3-pin removable barrier strip connector
AUX Connector Configurable for AUX input, AUX output or Listen Bus
Network Connector One Ethernet, 100Mb connector for both control and CobraNet™
Preset Indicator Signals the number of the current preset, if active, by flashing a series of flashes equal to the current preset number.
Data Indicator Flashes when the PIP-USP4 receives a valid command that is addressed to the PIP-USP4
Reset/Preset Switch Used to change presets, restore settings to factory default or restore all the presets to the factory defaults. During operations of the switch, the Data indicator flashes as an aid to the user.
Memory Backup Non-volatile FLASH memory for backup of run-time parameters, presets, and program storage. Capable of greater than 10 year data retention and estimated 20+ year life-cycle.
Communications 100Mb Fast Ethernet
Power Requirements (provided by the amplifier) +24VDC @ 350mA, -24VDC @ 30mA. <8.7 watts.
Frequency Response +/-0.5 dB, 20Hz - 20kHz
Dynamic Range >110 dB (A-Weighted, 20Hz - 20kHz)
THD+Noise <0.03% 20Hz - 20kHz
Crosstalk > 60 dB @ 1 kHz
Maximum Input Level +20 dBu
Common Mode Rejection >70 dB typical
Analog Out S/N > 110 dB, 20Hz - 20kHz
Input/Output Monitor Accuracy Typically +/-1 dB
Input Impedance Nominally 20 k ohms balanced, 10 k ohms unbalanced
Maximum Input and Output Level +20 dBu for both


HARMAN Professional Solutions:

PIP-USP4/CN (discontinued)

Programmable Input Processor