Excalibur King PRO Series


450w to 1500w

Our new Excalibur King Pro series uses our Quasar boards to offer incredibly high outputs with the most robust LED profile on the market today, you are guaranteed to see an increase in yield!

The Quasar series offers a complete UV to IR system to manipulate your plants by leveraging many different photobiological pathways. These pathways are proven to increase yield, THC, CBD, terpenes, phenols, vitamins and even help mitigate powdery mildew.

Power ranges from 450w to 1500w. Our system is designed to dominate any other light on the market today.

Light source efficiency is 3.0 to 3.2 depending on the spectrum chosen. We are currently offering 2 different spectrums, S1 Quasar Board with IR and S2 Quasar board with IR and UV.

For Commercial Inquiries: Request a Quote

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The Excalibur King PRO Series is Grow-It-LED’s brand new extremely high output commercial grade LED grow light. This new design features Grow-It-LED’s new proprietary Quasar LED boards that offer an incredible light output with a high full system efficiency of 3.2 umol/J. This design also allows for multi-channel control to individually control the UV, IR and White LED diodes independently. This gives the end-user ultimate control over their grow by leveraging cutting-edge growing techniques to maximize their yields. The addition of controllable spectra like UV and IR allows the end-user to leverage Emerson and Phytochrome effects which are proven to increase yield and reduce flowering time. UV also increases terpene levels and oil production significantly and increases the efficiency of photosynthesis.

Our new Excalibur King PRO design easily outperforms all legacy technology by a wide margin. The best of both worlds, high light output, and lower wattage! These fixtures really pay for themselves, high yield and lower power usage equates to massive ROI vs other light sources.

Just like the regular Excalibur King Series, it utilizes the same heatsink and fixture design to allow for upgrades down the line. Customers who already have an Excalibur King can purchase our upgrade arrays instead of purchasing an entire fixture!

All fixtures come with a wireless control option, the Casambi system can control each fixture individually. This allows for DLI control, sunrise/sunset functions, and spectrum tuning. Casambi can be used on Apple or Android devices.

Wireless Casambi control is available for this product along with the Aegis Series, Cool Cob Series, and Excalibur Series.

Product Features

  • Commercial LED Grow Light
  • Proprietary Grow-It-LED Custom LED Boards
  • Premium Osram or Inventronics LED drivers
  • Passively cooled design
  • Remote driver mounting capabilities
  • High efficacy white light spectrum with UV and IR
  • Upgradeable, interchangeable, repairable construction
  • Stand-alone dimmer knob or Casambi wireless controls
  • Robust aluminum construction
  • Properly heatsinked LEDs 
  • Universal power supply (110v, 120v, 240v, 277v)
  • 5-year warranty
  • Incredible Watt per $ and PPF per $

Wattage and Coverage

350w = 2′ x 4′ fixture housing and ideal for a 2′ x 4′ grow space

750w = 4′ x 4′ fixture housing and ideal for a 4′ x 4′ to 5′ x 5′ grow space

1200w = 4′ x 4′ fixture housing and ideal for a 4′ x 4′ to 6′ x 6′ grow space

Spectrum Options

Our new Quasar boards offer incredibly high output with the ability to manipulate photobiological pathways that have been proven to increase yield and potency.

S1 Quasar Board with IR

S2 Quasar Board with UV and IR

PPFD Measurements 

S1 Quasar Board with IR

Coming Soon!

S2 Quasar Board with UV and IR

Coming Soon!

Electrical Specifications

Power Draw: 350w to 1300w

HPS/MH Replacement Wattage: Up to 1500w+

Spectrum: Various Spectrums are available, please view our product cut sheet for more information

PAR efficacy: PAR eff. is based on each spectrum, 3.0+ Umol/J

PPF: Spectrum dependent

Coverage area 350w: 2′ x 4′ flower and 3′ x 5′ veg

Coverage area 740w: 5′ x 5′ flower and 6′ x 6′ veg

Coverage area 1300w: 6′ x 6′ flower and 8′ x 8′ veg

Lifetime: 100,000+ Hours (11.4 years of continuous use)

Driver: Spectrum Dependent, Osram OTi series, or Inventronics EUD series drivers

Cables: 6-foot industrial-grade SEEO Cord (Standard)

Plug: 5-15P Standard Other NEMA Plugs are available

Dimming: Yes, down to 1% of max output with a dimmer knob or dim to off with Casambi wireless system

Hanger: Built-in industrial-grade eye-bolt

Warranty: 5 year

Grams per watt: 2 g/w+ (environment dependent)

Yield: From 700-2600+ grams (wattage and environment dependent)

Voltage: AC 120V~277V

Amp draw:

200w 110V – 1.18A / 240V – .83A

740w 110V – 6.72A / 240V – 3.08A

1300w 110V – 11.81A / 240V – 5.42A


350w 682

1300w 2524

Shipping: Standard shipping rates apply. World wide shipping is available!

Additional information

Weight 41 lbs
Dimensions 48 × 12 × 12 in

450w 3-Bar (2'x4'), 850w 6-Bar (4'x4'), 1500w 10-Bar (4'x4')


S1 Quasar Board with IR, S2 Quasar Board with UV and IR


NEMA 5-15P (120v) Standard, NEMA 6-15P (240v), NEMA L7-20P (277v)


Dimming Knob (Standard), Casambi Wireless Control


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