The impression S350 Wash from GLP brings a new level of control and functionality to the mid range LED washlight market. At its core, the S350 Wash utilizes GLP’s class leading white light LED engine, also used in its spot counterpart, the impression S350, and features a CRI of more than 90 with TMS-30 and CQS measurements of 96 for superior color rendering at its native 6000 Kelvin color temperature.

The impression S350 Wash uses a Fresnel based optical system with zoom optics that give a range from 8° to 50° for the broadest range of flexibility.

At any angle within the zoom range, users have access to a full 4 blade curtain framing system, where each framing blade can cross the entire beam independently for a full blackout. Combined together, any combination of the blades – including the ability to rotate the entire assembly through 90° – allows you to focus the output precisely and accurately onto the performance area, with complete accuracy when returning time after time. For further beam control, a high speed iris is also included for additional options and effects.

The color engine of the S350 Wash is the same as its spot partner, the impression S350, allowing full color matching and variable color temperature control for seamless blending across unit types. A wide palette of colors is achieved through a dichroic CMY system that is supported by a fixed color wheel containing 10 slots, plus its open position. Also included is a variable color temperature control system that allows a full range from 2500 Kelvin to 8000 Kelvin to be selected at any time.

Beam control of the fixture output is available through an electronic shutter channel, with variable speed settings, whilst GLP’s stunning, custom created dimming technology offers full range dimming with the smoothest transitions at all intensities and through even the slowest fade times.

Destined to be used in a wide variety of applications, including noise sensitive theatre and television settings, the S350 Wash has been designed to run with near silent operation in normal use, and cannot be heard at its lowest settings. The units broadcast compatibility is supported with a full range of PWM settings for global cameras and studio environments.

As with every fixture in the impression range, the S350 Wash features a baseless design that reduces both size and weight, giving the fixture a total weight of just 56 lbs. (25.5 kg) and a size that allows it to be hung in very confined spaces.

The S350 Wash has connectors in its base section for power via a Neutrik True1 connector with full auto sensing power. For data, there are XLR 5 pin and RJ45 connectors for DMX, Artnet, sACN protocols with support for RDM throughout.

The S350 Wash can be mounted in any orientation and contains threaded sockets in its base for direct coupler connection, with built-in safety point attachments, and comes complete with a tripod floor stand, if being mounted on its base.

Available for purchase in either cardboard box packaging or in a rugged flight case, the S350 Wash comes in black as standard but is also available in other custom colors upon request.

With this fully packed feature set, and its proven LED engine pedigree, the impression S350 Wash is the premiere solution for mid-range washlight applications.



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Light Source

  • Lamp type: LED 350 W
  • Lifetime: 20,000 hours
  • Color temperature: 6000 Kelvin
  • CRI: >90
  • TLCI(Qa): >85
  • CQS: >85
  • TM-30 Rg: >95
  • TM-30 Rf: >85
  • Light output: 10,300 lumens



  • 4 blade framing system, each having complete beam coverage
  • Rotating gate through 90° 
  • 14 blade iris
  • 3-D dimming algorithm
  • Variable speed electronic shutter
  • Variable speed LED flicker effects
  • Variable CMY color mixing
  • Virtual variable color temperature correction, 2500 Kelvin-8000 Kelvin
  • Color wheel
    • 10 color filters
    • Full CTO 3200 Kelvin
    • 1/4 CTO 4600 Kelvin
    • CTB 9000 Kelvin



  • DMX / RDM data
    • XLR 5-pin in/out
    • Ethercon for Artnet or sACN
    • XLR 3-pin in/out
  • Mains power
    • AC Power 100-240 V, 50/60 Hz
    • Neutrik TRUE1 input
    • Max. consumption @ 230 V: 550 W
    • Typical Min. power consumption @ 230 V: 80 W
  • Optional Lumen Radio CRMX module


Operating conditions

  • Maximum ambient temperature:  115°F (45°C)


Mounting options

  • Upright: removable tripod base (supplied) with brackets for ratchet belt
  • Hanging:
    • 2 x M10 socket for half coupler, or other clamp
    • Omega brackets (optional)
  • 2 attachment points for safety wire
  • Any orientation


Optical System

  • Min. zoom: 6° (50% cutoff)
  • Max. zoom: 44° (50% cutoff) 
  • Focus: motorized 2m – infinite
    • Focus tracking: off, near, medium, far



  • Pan: 565°
  • Tilt: 256°



  • Cardboard box
  • 2-way tour pack complete with omega brackets and stacking flight case


Housing Colors

  • Standard color is black
  • For other colors please contact sales department



  • (L x W x H): head vertical
    • 18.6 in. x 9 in. x 25.1 in.  (47.2 cm x 23 cm x 63.7 cm)


Net Weight

  • 56 lbs. (25.5kg)


PDFIcon  impression S350 Wash User Manual V50 Rev C


PDFIcon impression S350 Wash DMX Channel Index V50 Rev C


ZIPIcon impression S350 Wash CAD

ZIPIcon impression S350 Wash Vectorworks

PDFIcon impression S350 Wash Dimensions


ZIPIcon impression S350 Wash Photometric inc IES files

PDFIcon impression S350 Wash Photometric Report

Fixture Profiles

ZIPIcon impression S350 Wash for Chamsys

ZIPIcon impression S350 Wash for Wholehog 4

ZIPIcon impression S350 Wash for MA2

ZIPIcon impression S350 Wash for Onyx

ZIPIcon impression S350 Wash for Wysiwyg


ZIPIcon impression S350 Wash Firmware V53

Tender Text

ZIPIconimpression S350 Wash Tendertext