LSX 900

LSX 900 is rated 4.1 out of 5 by 53.
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To create this stunning spa, we started with all the amazing features and comfort of the LSX 800, then increased seating so you can share all the best life has to offer with all your favorite friends and family. A true luxury, the LSX 900 is the very best of Master Spas all wrapped up in one beautiful hot tub.

Dimensions 108" x 94" x 38"
(275 cm x 239 cm x 97 cm)
Gallons 490
(1,855 L)
Jets 72
Seating Capacity 7-8

Features

Woman enjoying a relaxing foot massage in hot tub

Master Blaster ™ Foot Therapy

Give your feet the massage of a lifetime with 28 perfectly-positioned jets for the ultimate indulgence.

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LED Lighting

Glowing LED Lighting

Add some drama to your spa with a kaleidoscope of colors that will set the mood for a relaxing evening.

Stress Relief hot tub seat

StressRelief™ Neck and Shoulder Seat

Release the day's tension with specifically designed jets, focused on your neck and shoulders.

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Clean pure hot tub water with Mast3rPur Water Management System

Mast3rPur™ Water Management System*

Only Master Spas has a blended system of three natural sanitizers for unparalleled water quality with clarity, silkiness and a fresh smell.

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Deluxe Fusion Air bluetooth hot tub Sound System with marine grade speakers and subwoofer

Fusion Touch Sound System*

Bring your favorite music beautifully to life and complete the spa experience with this optional Bluetooth sound system.

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Woman remotely adjusting the hot tub temperature using an app on her tablet

Wi-Fi Module*

Get your spa ready to go from inside your home using your iPad©.


  • Ergonomic Design
  • Orbit Jets
  • Smart Sensor Technology
  • Xtreme Therapy Seat
  • LED Lights
  • Mast3rPur™ Water Management System
  • Master Blaster™ Foot Therapy
  • Afterglow Light Package*
  • EcoPur® Charge Water Purification
  • StressRelief™ Neck and Shoulder Seat
  • Fusion Touch Sound System*
  • Energy Efficient
  • Master Force™ Bio-Magnetic Therapy System
  • Wi-Fi Module*
Learn more about these features here

* Optional features

Shell Options

Sterling silver color swatch for acrylic hot tub shell
Sterling Silver
Sierra color swatch for acrylic hot tub shell
Sierra
Oyster Opal color swatch for acrylic hot tub shell
Oyster Opal
Desert Sand color swatch for acrylic hot tub shell
Desert Sand
Tuscan Sun color swatch for acrylic hot tub shell
Tuscan Sun
Midnight Canyon color swatch for acrylic hot tub shell
Midnight Canyon
Storm Clouds color swatch for acrylic hot tub shell
Storm Clouds
Oceanwave Opal color swatch for acrylic hot tub shell
Oceanwave Opal
Winter Solstice color swatch for acrylic hot tub shell
Winter Solstice

**Oyster Opal, Storm Clouds, and Desert Sand are unavailable on the LSX 900.

Skirt Options

DuraMaster Premium™

Duramaster Premium wood-look hot tub skirt in portabello color
Portabello
Duramaster Premium wood-look hot tub skirt in espresso color
Espresso

DreamStone™

Dreamstone stone-look hot tub skirt in desert color
Desert
Dreamstone stone-look hot tub skirt in granite color
Granite

DuraMaster™ II

Duramaster II contemporary hot tub skirt in ultra black color
Ultra Black

Model Specifications

Dimensions 108" x 94" x 38" (275 cm x 239 cm x 97 cm)
Weight (Dry/Full) 1,485 lbs (674 kg) / 7,055 lbs (3200 kg)
Gallons 490 (1,855 L)
Pumps 4
Number of Jets 72
Seating Capacity 7-8
Secondary Remote 1
Master Blasters™ 2
Rated 5 out of 5 by from The best of the best! The Cadillac of Hot Tubs I just had my MP LSX 900 delivered yesterday. I do have to say that the entire process from purchase to install from Crocker Sales in Woburn, MA was nothing short of excellence. The final elec hookup isn't complete yet (very soon), and I can't wait to fire this bad boy up! This thing is a beast...three dedicated pumps to the jets...plus circ pump. My back, hip, legs and everything else will be very thankful. I plan on using it every day...maybe even twice a day on the weekends....and maybe all day Sunday watching football. I "wet tested" many different models from many different brands and I was just not impressed. After stumbling across a website Hot tub university and reading the great review of MasterSpas, I just had to check one out for myself....and boy am I gad that I did. Thank you in advance Master Spas...you guys make simply the best product around...no comparison hands down.
Date published: 2019-10-16
Rated 5 out of 5 by from Great Hot Tub! The experience was great. The sales person was great when we were looking. The delivery and set up was great. The delivery people gave instructions (also in the manual) on how to do the chemicals after filling. The only thing I wish there was more of instructions on how to use all of the SEVERAL jets. It’s all in the manual and most of it is trail and error. The sales person explained them but when you are shopping you aren’t really paying attention. Once we got it we just had to turn on and off the jets to see what they do. The manual has a good diagram of what they due also. We had a question on one of the jets and customer service was great explaining it to us.
Date published: 2019-09-16
Rated 5 out of 5 by from Great The kids and I use it all the time, and very efficient on electric.
Date published: 2019-08-30
Rated 5 out of 5 by from Beyond Amazing From the start Master was a great, knowledgeable family business that truly cares about its customers. Constant communication. The delivery crew was great. They explained how they were going to get the tub in place and did so without problems! Very kind and helpful. This is the place you want to get your hot tub and supplies from!!!
Date published: 2019-08-22
Rated 5 out of 5 by from One of the best purchases I have ever made! Relaxing is an understatement. I look forward to getting it this tub. It's simply amazing in every way and It is as enjoyable to look at as it is to relax in it!
Date published: 2019-08-06
Rated 5 out of 5 by from Fantastic hot tib Have use it every evening before bedtime Very comfy and spacious
Date published: 2019-07-24
Rated 5 out of 5 by from Excellent hot tub. We have a large family. The hot tub has been perfect for everyone to enjoy together. The light and music features give you a truly entertaining experience while we enjoy being together relaxing. It also has the added advantage of creating natural communication opportunities with our teenagers.
Date published: 2019-07-09
Rated 5 out of 5 by from Great Experience We enjoy our hot tub frequently, even when it is cold outside!
Date published: 2018-12-26
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I just purchased the LSX900. I see on the video there is an waterproof iPad feature. What is the cost of that accessory? 

Asked by: Ronetta
Hello! All questions regarding accessory pricing will need to be answered by your retailer.
Answered by: Kayla
Date published: 2021-01-07

Cost of unit and install 

Asked by: Anonymous
Hello! Pricing is determined by the retailer. To locate and contact your local retailer, click here: https://www.masterspas.com/find-a-dealer
Answered by: Kayla
Date published: 2020-11-17

can I download the manual for the michael phelps 900 series soa

Asked by: Debraanne
Hi! All of our manuals can be found by clicking the "Resources" tab in the upper right hand corner of our website. I've provided the link for the Michael Phelps Legend Series manuals below - just pick the year of your model and that will take you to the PDF download. Hope this helps! https://www.masterspas.com/hot-tub-owners-manuals/legend-series
Answered by: Kayla
Date published: 2020-02-03

Does it matter which orientation the filters are installed? I.E. Does the Eco-Pur dual filter closest to the control panel or furthest away?

Asked by: bhermesch
Hi there! The Eco Pur filter/dual filter would sit closest to the topside control panel. In most of the Legend Series models this is the case. Most are built with a circulation pump. If you don’t have a circulation pump, it wouldn’t really matter which filter goes where since the main circulation would pull through both filters instead of just one.
Answered by: Kayla
Date published: 2020-07-04

My heater is out again and throwing the gfi.  This seems to happen every year. Is that normal and where can I get a replacement heater?

Asked by: Daj317
Hi! Thanks for reaching out. It sounds like your spa will need to be serviced. I've forwarded your contact information over to our service department - they should be in contact with you soon to set up a time to come out and get the spa's heater issue fixed.
Answered by: Kayla
Date published: 2019-11-22

I just had my 2019 MP LSX900 delivered yesterday. The question that I have, is what Balboa spa pack comes in my hot tub? I'd like to download a schematic of the board so that I can potentially switch the "time out" from 15 minutes to 30 minutes.

Asked by: Nick B
Hi Nick! The spa pack would be an MS40U, however we do not recommend attempting to switch the spa's run time.
Answered by: Kayla
Date published: 2019-10-17

How cold outside are the 900s rated to? -20 F, -50F?

Asked by: DLee
Hi! They aren’t rated against a certain temperature, but they do meet CEC standards for energy efficiency. We have spas all over Canada, Alaska, etc. Hopefully this helps!
Answered by: Kayla
Date published: 2020-11-24

Once the hot tub is delivered and set up, how long will the chemicals have circulate before someone can use the tub?

Asked by: Mel6
Hi Mel! The initial startup process with the chemicals can vary depending on the water that you use to fill the spa. You will need to balance the PH first, and this may take a couple attempts to get it into the acceptable range for your hot tub. We recommend waiting between 30-60 minutes between testing and adjust the levels for your PH. Once the PH is set, you can then add the sanitizer to the water. With the sanitizer, we recommend adding more than the recommended amount for the initial fill up process. You will want to wait until the parts per million are between 2-4. If you have any other questions or would like to see the process, we have several tutorial videos about the startup process which can be found on our website www.masterspas.com under our resources page. Thanks for asking!
Answered by: Kayla
Date published: 2020-07-18
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