
880™ Series
Marin® – 880™ Series
Seating:
Seats
The Dover hot tub represents Sundance Spa’s answer to a common challenge: how do you bring genuine hydrotherapy into a tight outdoor space without sacrificing the features that make soaking worthwhile? As part of the 780 series, this 2–3 seat compact spa was designed specifically for couples and small households who refuse to compromise on quality just because their patio or small space can’t accommodate a seven-person behemoth.
With its low profile design measuring approximately 31 inches in height, the Dover offers easy entry and exit that larger, deeper tubs simply can’t match. The compact footprint—roughly 69 inches wide by 82 inches long—tucks neatly into narrow side yards, rooftop decks, and townhome patios where a full-size spa would overwhelm the area.
While Sundance officially rates the Dover for three adults, everyday reality tells a different story. This is a spacious, luxury experience for two, with that third seat available when guests visit or children want to join. Think of it as a couples’ retreat that can accommodate company when needed.
Quick Spec Snapshot:
Specification
Details
Series
Sundance 780 Series
Seating Capacity
2–3 adults
Dimensions
69” W × 82” L × 31” H
Jets
23 Fluidix jets
Water Capacity
230–315 gallons
Dry Weight
620 lbs
Power Options
120V@15A (plug-and-play) or 240V@30A/40A
Pump
Single 2-speed 1.5 HP + circulation pump
The Dover proves that a smaller footprint doesn’t mean feeling squeezed. Its thoughtful layout works remarkably well for townhomes, rooftop decks, and those narrow side yards that seem to exist in every urban property. The low profile shell sits close to the ground, creating visual balance with surrounding landscaping while making the step-in process feel natural rather than athletic.
The play model features seats arranged to maximize comfort without the awkward knee-bumping that plagues some compact designs:
Sundance paid attention to the details that matter during a 30-minute soak:
The easy entry and exit the Dover spa provides comes from more than just height. The wide step-in area and textured interior footing benefit older users, those with limited mobility, or anyone who’s ever felt uncertain climbing over a tall spa wall after dark.
Styling remains clean and modern, with cabinet color options that complement both modern hardwood decks and rock walls alike. Once filled and lit at night, this compact shell looks every bit as substantial as larger models—the perfect size for creating a genuine backyard retreat.
Jet counts matter less than how those jets actually feel during daily use. The Dover’s 23 Fluidix jets deliver five distinct massage varieties without the bearings or wearable parts that clog and degrade over time. This means reliable performance year after year, with adjustable flow patterns that mimic kneading, pulsing, and swirling techniques.
The series exclusive SMT seat serves as your relaxation lounge. Spiral action jets create a swirling massage melts away fatigue sensation that works systematically across shoulders, mid-back, and lumbar areas. This isn’t aggressive or jarring—it’s the kind of hands on massage sensation that helps you relieve tension accumulated from desk work, yard projects, or simply the weight of daily responsibilities.
The SMT seat feels like skilled hands working across your back in smooth, circular patterns. Many owners settle into this seat first, letting the bold swirling massage melts tension before moving to more targeted therapy.
When you need to address specific problem areas, the exclusive Accu Pressure seat you’ll find focused deep tissue pressure waiting. This seat targets trigger points in the neck, shoulder blades, and along the spine with pressure to dissolve pain and rejuvenate tired muscles.
After long workdays or physical activity, this seat helps dissolve pain and works through those stubborn knots that resist stretching alone. The find focused deep tissue approach tackles what a general massage cannot, delivering tissue pressure to dissolve pain at its source.
The footwell massage deserves special mention. Jets positioned for your feet a bold swirling massage melts fatigue in aching arches and tired calves. Many owners rotate between seats during a 20–30 minute soak, spending time letting the massage melts away muscle fatigue before switching positions to achieve maximum relaxation throughout the entire body.
Practical Use Cases:
Clean water with minimal fuss ranks among the top priorities for any new hot tub owner, and the Dover delivers with systems designed to reduce chemical dependency while maintaining crystal clarity.
The CLEARRAY Active Oxygen system uses UV-C light technology to neutralize waterborne pathogens naturally. Think of it as having a secondary sanitation layer working constantly, reducing the amount of chlorine or bromine needed to keep water safe and inviting. This open water management system means less chemical smell, gentler water on skin and hair, and fewer trips to the store for sanitizers.
The MicroClean system features a 125 square foot cartridge filter with horizontal placement for efficient particle capture. A floating weir helps skim surface debris, while one diverter valve allows you to customize flow direction between seats for personalized massage intensity.
Practical Maintenance Schedule:
Task
Frequency
Test strip water check
Weekly
Filter rinse
Monthly
Water change
Every 3–4 months
CLEARRAY bulb inspection
Annually
Filter replacement
Annually
After heavy use—weekend guests, a party, or after rain and debris exposure—the push-button CLEARRAY On-Demand cycle provides extra sanitation power. This super-treats your water when circumstances call for it, returning to normal clarity without dramatic chemical intervention.
First-time spa owners can feel confident that the Dover is manageable without a pool-service contract. Visual cues and the auto filter programs help you know when water needs attention, taking the guesswork out of maintenance.
The Dover transforms your outdoor space into a proper retreat, especially after sunset. This isn’t just about soaking—it’s about creating moments of genuine peace in your own backyard.
Stainless steel exterior lights and cabinet corner accents provide subtle, modern illumination that aids visibility on dark patios without feeling like stadium lighting. The exterior indicator light also shows spa status at a glance—helpful when walking past in the evening.
Inside the spa interior, multicolor SunRay LED lighting lets you choose the mood. Switch between steady white for bright visibility, gentle color cycling for relaxation, or settle on a single favorite hue. The illuminated footwells add both safety and atmosphere.
The AquaSheer waterfall provides gentle sound and visual interest, with backlit LED lighting behind the falling water. On quiet evenings, this feature alone transforms an ordinary soak into something more meditative.
Picture a typical evening: steam rising into cool air, soft LED colors reflecting off the water’s surface, the gentle sound of the waterfall masking neighborhood noise. This is what the Dover offers—maximum relaxation without requiring a resort-sized budget or footprint.
The Dover was designed for owners who want relaxation without a steep learning curve. Spa functions remain intuitive from day one.
The efficient control panel sits at water level with backlit, weather-resistant buttons for:
The controls efficient control panel design means you won’t fumble in the dark during early-morning or late-night soaks. Illuminated buttons allow operation without turning on bright house lights, preserving the peaceful atmosphere.
The optional SmartTub system connects your spa to your mobile device, enabling:
Practical scenarios make this worthwhile: start heating from work so the water’s ready when you pull into the driveway. Lower temperature during vacation to save energy. Receive a notification if something needs attention before a minor issue becomes a major problem.
Most owners get comfortable with basic panel operation within their first two or three soaks. The SmartTub app adds convenience for those who appreciate connected home technology, though it remains optional—the Dover works perfectly without it.
Whether you’re facing harsh summer sun or frigid winter temperatures, the Dover’s exterior holds up to real-world conditions.
The cabinet panels offer a wood-look aesthetic without the maintenance headaches of actual wood. No staining, no sealing, no worrying about rot or warping. A simple wash with mild soap and water keeps the exterior looking fresh season after season. The UV resistant synthetic cabinetry resists fading even in direct sunlight, maintaining curb appeal for years.
The cabinetry access design allows panel removal without power tools. This matters when servicing pumps, heater, or electronics—you or a technician can get inside quickly without hunting for screwdrivers or risking stripped screws.
The shell and cabinet work together to retain heat efficiently. High-density foam insulation throughout the cabinet area reduces heat loss, particularly important for cold-weather operation. This directly impacts your energy bills—less heat escaping means less energy needed to maintain temperature.
Understanding installation requirements before purchase prevents surprises and delays.
The Dover is available as a north america convertible model, offering flexibility based on your situation and local electrical regulations:
120V Operation (Plug-and-Play):
240V Operation (Hardwired):
Unlike larger models that require dual power inputs, the Dover keeps electrical needs straightforward with no secondary pump to worry about.
Your spa needs a solid, level foundation:
Plan for at least 18 inches of clearance on the service side for maintenance access, plus enough room around all sides for safe cover lifting.
Measure your delivery route carefully:
In rare cases—narrow urban lots, rooftop installations—a crane may be needed, which adds to delivery cost.
Typical Timeline:
Phase
Duration
Site prep (pad/deck)
1–2 days
Electrical work (240V)
1 day
Delivery and placement
Same day
Fill and initial heating
12–24 hours
First soak
Evening of delivery or next day
For owners planning nightly or near-daily soaks, energy efficiency directly impacts the long-term value equation.
The Dover’s smaller water volume (average fill of 230–315 gallons) requires less energy to heat and maintain than 6–7 person models. Actual costs depend on:
In moderate climates, expect modest monthly costs. Winter operation in cold regions increases consumption, but the Dover’s insulation and compact size keep bills manageable compared to larger spas.
Several design elements work together to reduce operating costs:
The circulation pump runs quietly during filtration cycles—barely noticeable from inside your home. Jets at high speed produce moderate noise typical of any spa, but nothing excessive. Tips for minimizing perceived sound:
Sundance shoppers often weigh the Dover against the Montclair and other dover 780 series options before deciding.
Feature
Dover
Montclair
Seating Capacity
2–3 adults
4–5 adults
Dimensions
69” × 82” × 31”
75” × 91” × 33.5”
Jets
23
30+
Footprint
Compact
Mid-size
Best For
Couples, small spaces
Families, entertaining
The Dover fits best when:
The Montclair makes more sense when:
After about a month of ownership, patterns emerge in how Dover owners describe their experience.
Some owners note:
Overall satisfaction runs high, with most owners indicating they’d recommend the Dover to friends seeking a compact luxury experience.
Actual Dover pricing varies by local dealer, region, and seasonal promotions. Generally, the Dover sits in the mid-range tier among premium-brand compact spas—less than larger Sundance models but above budget entry-level brands.
The Sundance 780 Series typically includes coverage for:
Exact terms and durations vary by model year—verify specific warranty details with your local dealer before purchase.
Schedule a wet test at a local dealer. Sitting in the SMT and Accu-Pressure seats with water running gives you information no specification sheet can provide. Feel how the jets hit your particular body. Test the entry height. Evaluate whether the compact size feels spacious or restrictive for your frame.
Visiting a Sundance dealer also lets you compare the Dover side-by-side with larger models, confirming that the compact footprint truly meets your needs.
The Dover delivers spa-quality hydrotherapy to even the smallest outdoor spaces, proving that luxury doesn’t require a massive footprint. For couples seeking nightly relief and weekend relaxation, this compact gem provides therapeutic depth that entry-level tubs can’t match.
Before committing, consider:
If your answers align with what the Dover offers, this compact spa may be exactly what your backyard needs. Measure your space, visit a local dealer, and experience the SMT and Accu-Pressure seats firsthand. Sometimes the perfect fit isn’t the biggest option—it’s the one that transforms your available space into a genuine sanctuary.
The Dover is rated for up to three adults, but in everyday use, it feels most luxurious for two. That third seat works well for occasional guests, children joining parents for a soak, or rotating positions during longer sessions. Three large adults every night would feel snug—this spa truly shines as a couples’ retreat with flexibility for company.
Many Dover units are configured for 120V plug and play model operation, which simplifies installation significantly. However, the 1.0 kW heater at 120V heats water slowly, especially in cold weather. Converting to 240V with a licensed electrician provides a 4.0 kW heater, dramatically improving heating speed and cold-weather performance. For mild climates and patient owners, 120V works fine. For cold regions or those wanting quick heat recovery, 240V proves worthwhile.
Most owners change water every 3–4 months with normal use (two people soaking several times weekly). Rinse filters monthly to remove accumulated debris, and replace filter cartridges roughly once a year. Usage patterns, bather load, and local water quality can shift this schedule—heavy use or hard water may require more frequent attention.
Yes, with proper setup. The Dover’s insulation, quality spa cover, and smaller water volume make it suitable for cold-weather use. Key requirements include installation on a proper level base, correct electrical wiring (240V recommended for faster heating), and keeping the cover securely in place when not soaking. Many owners in northern climates use their Dover year-round without issues.
Common add-ons to consider include matching steps for entry, a cover lifter for easy cover removal, spare filters, a water care starter kit, and the optional SmartTub module for app connectivity. Ask your dealer which accessories come bundled versus priced separately—negotiating a package deal often saves money compared to purchasing items individually later.

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