Original price was: $15,499.00.Current price is: $11,499.00.


  Seats 5 Adults

  7’3″ x 7’3″ x 37″

  90 Jets

Or Call Us: (317) 773-3545


If you’re looking for a midsize spa packed with features and a modern aesthetic, look no further than the Onyx hot tub from Platinum Spas’ Premium Series. This hot tub seats up to 5 people and has an impressive 90 jets for a truly immersive hydrotherapy experience. It measures 7’3″ x 7’3″ x 37″ and has three bench seats in addition to two full size loungers.

Onyx’s 90 jets are powered by 4 x 5 BHP pumps to create an exceptional hydrotherapy experience. Each seat has individual seat pressure controls and a unique configuration of rotational and directional jets so you can enjoy the perfect massage every time. The ozone water clarifying system works to help sanitize your spa water and keep it crystal clear, while the 5.5kW heater keeps it nice and warm year-round.

The hand rolled fiberglass shell of the Onyx is available in 3 color choices and has a Superior Aristech Acrylic finish with maintenance-free cabinet. The Platinum Premium Shield combines five different types of insulation for incredible heat retention, and a tubular stainless steel framework provides unprecedented strength and longevity.

Create the perfect ambiance with the included Bluetooth sound system, water features, and beautiful LED lighting at the waterline, corner panel, and underwater flood lighting. The Balboa Spa Touch 2 control board complete with color screen and directional keypad makes it easy to adjust your spa’s settings. Onyx is also compatible with a Wi-Fi app based remote control (the Balboa Wi-Fi module can be purchased separately) if you prefer controlling your spa’s settings from the convenience of your smartphone.

Onyx Jets:
90 jets in total
2 x 7″ massage jets
10 x 5″ massage jets
8 x 3.5″ massage jets
70 x 2″ massage jets

Download Onyx Spec Sheet


Seating Capacity

5 Person

Seating Style

Bench Seating, Lounge Seating


Platinum Spas

Hot Tub Size



7'3" x 7'3" x 37"

Weight (dry)

1036 lbs

Jet Count


Water Care Systems

Compatible with Bromine or Chlorine

Multi-color LED Lighting

Corner Panel Lighting, Underwater Flood Lighting, Waterline Lighting


4 x 5 BHP, 2 HP continuous

Circulation Pump

1 x 0.53 HP

Heater Output

5.5kW Titanium Heater

Control System

Balboa Spa Touch 2

Electrical Requirements

60 Amp / 240V

Energy Efficiency

High density lockable spa cover, Premium multi-layer insultation

Ozone System

Ozone water clarifying system


Lifetime (Shell Structure), 5 Years (Shell Surface), 3 Years (Pumps, Control Box, Control Panel), 2 Years (Plumbing, Jets, Ozone, Audio, Lighting), 1 Year (Cabinet, Cover, Plastic Components)

Platinum Spas Features

Platinum Spas hot tubs come standard with a variety of high-tech features designed to enhance your hydrotherapy experience. With innovation and luxury at the heart of every spa, it’s easy to see why Platinum Spas is an industry leader.


Platinum Spas uses only the highest quality components, which is why they’ve chosen globally renowned Balboa for their control systems. Every Platinum Spas hot tub uses Balboa heaters, control panels, and control board. 


Platinum Liquid Effects brings your hot tub experience alive with innovative use of LED lighting. With a variety of mood-lifting multicolored LED lights, your evening spa time will be enhanced when the sun goes down with the Platinum Illumination.

Lighting features vary by model and may include:

  • Waterline Lighting
  • Underwater Flood Lighting
  • Corner Panel Lighting


Nothing beats enjoying your favorite music, podcast, or audiobook as you relax in your spa. And thanks to the Platinum Melody System, it’s never been easier. This high-quality Bluetooth sound system comes standard on all Platinum Spas hot tubs and is simple to use. Just search and connect your device, as you would any other Bluetooth enabled system. Then, sit back, relax, and enjoy!


Uniquely designed to maximize heat retention, the Platinum Premium Shield reflects heat back inwards, so the “wasted” heat created by pumps and other components can be recycled. This heat is used to help maintain temperature through heat transfer via the vast amounts of plumbing. In turn, overall operational costs are reduced.

New foil-coated cabinet panels also reflect the cold air out of the hot tub while bouncing the heat back inwards for added efficiency. This innovative technology results in exceptional heat retention and a reduction in energy usage.


All Platinum Spas can easily be WiFi enabled with the addition of the optional WiFi module.

The Balboa Worldwide App (bwa™), is an app designed for iPhone and Andriod that allows you to access your hot tub via a direct connection. The app lets you start up your hot tub and change settings from the convenience of your smartphone or tablet, rather than moving to another seat or stepping out of the spa. Enjoy full interface control, including temperature adjustments, turning pumps on and off, and even setting filtration cycles.


Platinum Spas utilizes high-quality Aristech Acrylic on all of their hot tubs. The Aristech Acrylic brand supplies acrylic sheets from the world’s leading brands for the manufacturing of spas, swim spas, and hot tubs. Their quality is unmatched, making it the logical choice for Platinum Spas.

Since its inception, the Aristech Acrylics brand has seamlessly blended innovation, manufacturing expertise, and industry-leading customer service to become the number one choice of acrylic sheets for OEMs, fabricators, and designers worldwide.

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