Master Spas Michael Phelps Legend Series
Short answer
The Michael Phelps Legend Series has 5 hot tubs, from the 5-seat LSX 30 to the 8-seat LSX 900. They hold 305 to 490 gallons, with reported prices of $19,999 to $21,999 (October 2026).
Models
5
Seats
5-8
Jets
59-72
Reported price
from $19,999
Build checks
7 of 8
Every model Master Spas sells in the Michael Phelps Legend Series, smallest to largest. Seats, size, jets and pumps are from Master Spas’ own spec pages; each figure's dot links its source. Prices are reported prices; a dash means there's no reported price for that model.
 Master Spas LSX 30 | 5 | 63 | — |
|---|---|---|---|
 Master Spas LSX 700 | 5 | 62 | $19,999 |
 Master Spas LSX 800 | 6 | 70 | $20,999 |
 Master Spas LSX 850 | 7 | 59 | $20,999 |
 Master Spas LSX 900 | 8 | 72 | $21,999 |
What sets the Michael Phelps Legend Series apart?
The flagship line: the most therapy seats, three pumps on every model, and the only Master Spas series with a standard ABS pan bottom.
- Strongest warranty in the lineup. 10 years structure, 7 years shell surface and 5 years on equipment, plumbing and jets, with labor included on the main terms.
- More standard equipment. WiFi module, Orion lighting, cabinet lighting, three water features, a nonslip comfort mat and a deluxe tapered cover are standard.
- Sealed base. A vac-formed ABS pan bottom is standard on Legend, helping keep heat in and moisture and pests out.
- Upgrade options. Master Clear salt system, QuietFlo circulation pump (not on LSX 30) and Fusion Air sound are offered as premium options.
What to watch
- Warranty ends if you sell or move it. Coverage is for the original buyer only and is voided if the spa is moved to a different location; rental use roughly halves the terms.
- Cover not warrantied. The spa cover is excluded from the limited warranty.
- Pump power not disclosed. Master Spas lists pump counts but no horsepower or flow figures for the jet pumps.
How do the 5 models differ?
Seating runs from 5 in the LSX 30 to 8 in the LSX 900. LSX 30, LSX 700, LSX 800 and LSX 900 have a lounger; LSX 850 is open seating. Every model runs three jet pumps.
Jet counts run from 59 (LSX 850) to 72 (LSX 900). More jets on the same pumps split the same flow across more nozzles, so sit in the seats you would use and run the jets before you choose by the count.
Every reported price on the Master Spas prices page is dated, and each model's page shows its own figure.
How is Master Spas built?
Master Spas passes 7 of our 8 build checks. They apply to the whole brand, so they hold for every model above. The evidence for each is on the Master Spas brand page.
How it’s built
Eight things that decide whether it lasts. Tap any for the detail.
Self-supporting shellA fiberglass-backed shell that holds its own shape and water loadYes
Master Spas reinforces the acrylic with fiberglass, and that laminate carries the load. The frame and foam are there, as on most tubs, but they aren't what keeps the shell from flexing.
What this means, and how to check it →masterspas.com ↗masterspas.com ↗
Clamped plumbingBarbed, glued and clamped on every flexible lineYes
Barbed, clamped and glued: all three, the strongest of the joint methods, and one many makers don't use. Every flexible line runs onto a barbed fitting, is glued, and carries a clamp; the rigid runs are solvent-welded slip joints. Master Spas' own parts catalog backs this up: it stocks stainless hose clamps under a Master Spas part number, and its manifolds are built as glued slip trunks with barbed branch ports, which is the architecture clamps belong on.
What this means, and how to check it →masterspaparts.com ↗masterspaparts.com ↗
Manifold-fed jetsManifold plumbing, so closing one jet doesn't starve the nextYes
Master Spas lists a manifold system as a build feature and stocks about sixteen manifolds under its own part numbers, which a daisy-chained brand would not need. Each jet gets its own hose off a branch port. A few short series runs elsewhere in the tub are still possible.
What this means, and how to check it →masterspas.com ↗masterspaparts.com ↗
Standard partsStandard Balboa and Waterway parts that independent suppliers stockYes
The pumps, heaters, controls and jets are standard supplier parts. Master Spas also lists them under its own part numbers, so give a parts shop the supplier's number when you order.
What this means, and how to check it →hottuboutpost.com ↗masterspaparts.com ↗
Compression-fitted jetsJet bodies are held by a gasket and a back nut, so a leaking one is resealed…Yes
Each jet body goes through the shell and is clamped to it by a rubber gasket and a threaded nut on the back. A body that leaks or cracks can be resealed or unscrewed and replaced without cutting the shell.
What this means, and how to check it →masterspaparts.com ↗masterspaparts.com ↗
Adjustable jetsMost jets adjust by turning the face; some are fixedYes
The manual says most jets can be turned down or shut off one at a time. Foot, neck and small cluster jets are fixed, and the air knobs are shared across a seat or two. The warranty excludes seized adjustable internals, the usual hard-water failure, but the part is cheap.
What this means, and how to check it →masterspas.com ↗masterspas.com ↗
Service networkOne of the biggest brands, with a large dealer network, but service is harder…Partly
Most areas have a Master Spas dealer nearby, and independent suppliers stock its parts and sell them to any service tech. Warranty claims still go in writing to the dealer who sold you the tub, within ten days, so if you live far from a dealer, expect to wait longer for warranty service. Find out who services your area before you buy.
What this means, and how to check it →masterspas.com ↗masterspas.com ↗
American made?Built in Fort Wayne, IndianaYes
Fort Wayne, Indiana: 614,000 sq ft plant on a 45-acre campus, the company says (2026). Fort Wayne, Indiana (510 Sumpter Drive): Swim spa building added in the 2018 expansion. Fort Wayne, Indiana (original): Started in a 90,000 sq ft facility, per its 25th-anniversary post.
What this means, and how to check it →masterspas.com ↗areadevelopment.com ↗
Other Master Spas hot tubs
Master Spas also sells Clarity Spas (7), Getaway Spas (5), LH Series (5) and Twilight Series (7). Every model is on the Master Spas hot tubs page.
Sources
7
- Master Spas LSX 30 product pageseats, size, jets and pumps
- Master Spas LSX 700 product pageseats, size, jets and pumps
- Master Spas LSX 800 product pageseats, size, jets and pumps
- Master Spas LSX 850 product pageseats, size, jets and pumps
- Master Spas LSX 900 product pageseats, size, jets and pumps
- Michael Phelps Legend Series limited warrantywarranty terms
- Michael Phelps Legend Series limited warrantywarranty terms