
Dualsonic Optimum
Focused ultrasound, nothing else, taken as deep as 4.5 mm
Two Korean-made devices, both yours to use at home, both built on the same patented dual-layer focused ultrasound. One goes deeper into a single job. The other covers more ground. This page is here so you can tell, in about four minutes, which of those two is the one you actually want on your bathroom shelf.

Dualsonic Optimum
Focused ultrasound, nothing else, taken as deep as 4.5 mm

Dualsonic Maximum Alpha
Seven technologies, one handle, a full treatment menu
The short answer
Almost every difference between these two devices comes back to a single decision the engineers made, and it is easier to see than to read about.
Every part of it serves focused ultrasound. That single-mindedness buys you depth control that a shared device cannot offer: five separate depth programmes from 1.5 mm at the eye to 4.5 mm along the jaw, three of them treating two layers in the same pass.
The same focused ultrasound sits alongside six more technologies in one body: radiofrequency, microcurrent, electroporation and three wavelengths of light. You get six modes covering lifting, firming, daily upkeep and skincare absorption, from one handle.
If you read nothing else
Choose Optimum if lifting is the thing you actually care about and you want one short, serious appointment with yourself each week. Choose Maximum Alpha if you enjoy a routine, want something to reach for most days, and would rather have lifting, firming, glow and better product absorption in one object than lifting alone.

Device one
A specialist, and it does not pretend otherwise. Optimum makes focused ultrasound and light, and that is the whole list. What you get in return is precision: the depth is not something you guess at, it is set for you by the mode you choose, from 1.5 mm around the eye to 4.5 mm along the jawline where skin actually gives way.
Its signature is Quick Mode. Two hundred shots, six minutes, cheeks then eyes then forehead, once a week. You put it down and you are finished until next Sunday.
€1,450Dualsonic Optimum

Device two
A generalist in the best sense. Seven technologies share one body, and the mode dial is really a small menu of treatments: lift the lower face, lift the cheeks, work the eye area, firm and refine with radiofrequency, keep things ticking over with microcurrent, or push your serum in properly with electroporation.
Because no single session has to do everything, you can spread the work across the week. Lifting on one day, a tightening pass on another, daily care on the days in between.
€1,250Dualsonic Maximum Alpha
Where the energy lands
Focused ultrasound skips the surface and puts its heat at one exact point underneath. The whole argument between these two devices is how many of those points you get to choose from, and both charts below are drawn to the same millimetre scale so you can compare them honestly.
Read across the bottom row and the difference is plain. Optimum lets you pick the depth for the zone you are standing in front of the mirror worrying about. Maximum Alpha groups the face into two sensible settings and spends the rest of its engineering on the other six technologies.
What is inside
Both devices use the same patented dual-layer focused ultrasound, protected in Korea, the United States, Japan and China. What differs is how much else is sharing the body.
Nothing competes for the battery, the head or the engineering budget. The ceramic transducer is concave, so the energy converges on one point under the skin and leaves the surface untouched. Red, yellow and infrared light run alongside it, matched automatically to whichever mode you picked.
Red on V-up and Face-up for firmness. Yellow on the eye, brow and neck modes for tone. Infrared on V-up and Face-up for conditioning. You can switch the light off entirely by holding the intensity button.
Focused ultrasound for the structural lift, at dual depths.
Warmth held in the dermis at 1, 2 and 3 MHz in sequence, for density and firmness.
The gentle everyday setting, for a face that looks awake rather than puffy.
Opens a brief path for whatever you have just applied to go in properly.
Pairs with the lifting modes, for elasticity and firmness.
Used on the delicate areas, for tone and brightness.
The warm, restorative note underneath the daily modes.
Optimum only
Most home ultrasound places a single focal point per shot. Optimum fires a line of thirteen, laid down together by angled transducers. More tissue is treated in each pass, which is how a serious cheek treatment fits into three minutes and twenty seconds.
Living with it
This is the part most comparisons leave out, and it is usually what decides it. Be honest about which of these two weeks sounds like yours.
6 minutes, once
One appointment with yourself. Quick Mode runs cheeks, eye area and forehead back to back, two hundred shots, then it switches itself to standby and you are done. If you want to work zone by zone instead, the five individual modes take one minute forty each, with Face-up at three minutes twenty. The manual is clear that once a week is the recommended frequency, and that more is not better.
A little, most days
A routine rather than an appointment. The lifting modes stay weekly, the same as any focused ultrasound. Around them sit Tight-up for firmness, Daily-up for everyday upkeep and Cos-up when you want a serum to actually land. If you are someone who likes a ritual at the mirror, this is the device that rewards it.
The dial, mode by mode
Taken from the Optimum user manual and the Maximum Alpha product specification. Shot counts and timings below are the recommended settings the device holds for you.
Side by side
| Optimum | Maximum Alpha | |
|---|---|---|
| Built for | Lifting and firming, as deep as home ultrasound goes | A complete routine, lifting included |
| Technologies | Ultrasound plus red, yellow and infrared light | Ultrasound, radiofrequency, microcurrent, electroporation, red, yellow and infrared light |
| Depth programmes | Five, from 1.5 to 4.5 mm | Two pairings, 1.5 to 4.5 mm |
| Dual-layer delivery | Three of the five modes | Both ultrasound modes |
| Points per shot | Thirteen, in a line | Single focal point |
| Modes on the dial | Six, all ultrasound | Six, across five technologies |
| Shortest full routine | Quick Mode, about 6 minutes | Varies by mode you choose |
| Recommended rhythm | Once a week | Lifting weekly, lighter modes more often |
| Shots | Unlimited, no cartridge. 200,000 covered by warranty | Unlimited, no cartridge. 200,000 covered on the lifting modes |
| Intensity levels | Three | Three |
| Battery | 3,350 mAh. About 1 hour 30 of use, 2 hours 30 to charge | 3,350 mAh. Up to 82 minutes of use, about 235 minutes to charge |
| Display | LCD with mode, intensity, light status and shot count | Smart OLED with mode, intensity and battery |
| In the box | Device, charging stand, USB-C cable, charger, warranty card. No gel included | Device, cradle, USB cable and a starter tube of ultrasound gel |
| Finishes | Ruby, Ash | Ruby, White |
| Price | €1,450 | €1,250 |
Choosing
No quiz. Read both columns and notice which one you keep nodding at.
Choose Optimum
Choose Maximum Alpha
Identical on both
Whichever you choose, the handling is the same, and the manual is unusually firm about it. Worth reading before your first session rather than after.
Use plain conductive ultrasound gel, the same kind used in clinics and for medical scans. It is not a proprietary product, so any pharmacy or medical supplier will have it and you are never locked into one brand. Maximum Alpha arrives with a starter tube in the box. The Optimum box holds the device, stand, cable, charger and warranty card only, so order gel at the same time as the device rather than after it lands.
On the area you are about to treat, not on the device head, and a generous layer rather than a polite one. Apply it to clean dry skin immediately before you start, because it dries out faster than you expect. A thin layer leaves air gaps between the head and the skin, which is the single most common reason a session stings. Afterwards, pat what is left into the skin or rinse and carry on with your usual products.
Between the brows, the eyeballs themselves, the lips and the area around the mouth, the nasal bone, the jawbone line, the Adam’s apple and the thyroid. If you have had filler, fat grafting or threads, wait for a proper recovery period first.
Three intensity levels on both devices. Begin at the lowest and move up only once you know how your skin responds. How the energy feels changes with the season, with stress, with a glass of wine the night before, and after any peel or exfoliation.
Never hold either device still on one spot, and do not run the same line twice in a session. Keep the head flat against the skin and glide. Repeating a line is how burns happen.
A little redness for a few hours is expected. Skip saunas and steam rooms for one to three days, leave exfoliation alone for a week, and do not scratch even if the area feels itchy. Makeup and washing your face are fine the same day.
Pregnancy, open wounds or raised scars, severe acne or very sensitive skin, metal or silicone implants in the area, pacemakers and other implanted electronic devices. If you are under medical or dental treatment, ask first.
One more option
A fair number of owners end up with both, and it is not the indulgence it sounds like. Optimum takes the weekly lifting appointment, working deeper than anything else you can hold. Maximum Alpha handles the days in between: firming, microcurrent, and getting your skincare where it belongs. Neither is doing the other’s job badly, because neither is trying to.
If you are going to own one first, let the depth chart decide it. If the jaw and neck are the concern, start with Optimum. If you are treating the whole face on several fronts, start with Maximum Alpha.
Still deciding
Both ship worldwide from Spain, both are made in Korea, both carry the same warranty and the same after-sales support. There is no wrong door here, only the one that suits your face and your week.
Not sure yet? Compare the full Dualsonic range, or see how the Protocol Hub plans your routine.