Casio Celviano AP-550 vs Korg LP-380U
Quick Verdict
The Casio Celviano AP-550 suits players who want a traditional console with a sliding cover, Bluetooth audio and MIDI, 256-note polyphony, and Casio's Smart Hybrid Hammer Action with spruce-blended keys. The Korg LP-380U suits players who prioritize the RH3 action, a slim 26 cm cabinet, lighter weight, and strong value; it gives up Bluetooth and offers 120-note polyphony. If touch and space are the top concerns, choose the Korg. If connectivity, polyphony, and a furniture-style cabinet matter more, choose the Casio. Both deliver three built-in pedals and real speaker systems.
| Spec | Casio Celviano AP-550 | Korg LP-380U |
|---|---|---|
| Key Action | Smart Hybrid Hammer Action with spruce-blended keys | RH3 (Real Weighted Hammer Action 3) |
| Sound Engine | Casio AiR with two concert grands | Korg stereo piano samples |
| Voices | 26 | 30 |
| Polyphony | 256 notes | 120 notes |
| Speakers | 40 W system | 2 x 22 W |
| Bluetooth | Audio and MIDI via included adapter | No |
| USB | USB to Host | USB MIDI |
| Pedals | 3 pedals built in | 3 pedals built in, half-damper |
| Weight | 109 lb (49.5 kg) per listing | 81.6 lb (37 kg) |
| Form Factor | Traditional console with sliding cover | Slim console, 26 cm deep, with key cover |
Key Action
The Casio Celviano AP-550 uses Smart Hybrid Hammer Action with spruce-blended keys, and the listing notes a longer pivot than the Smart Scaled action found in the AP-S200. This action earns 27 out of 30 points in the scoring. The Korg LP-380U uses the RH3 Real Weighted Hammer Action 3 and scores 29 out of 30. The listing describes RH3 as the flagship action in a home console and the best action in its price range.
The Casio action is a clear step above the Smart Scaled action and closes the gap to the Kawai RHIII and Yamaha GH3, according to the supplied product notes. The listing does not state the exact pivot length or key material details for the Korg RH3, only that it is a real weighted hammer action. Casio does specify spruce-blended keys, which is a material detail not mentioned for Korg.
For a buyer who ranks touch above everything, the Korg has the higher key action score and the stronger reputation in this comparison. The Casio is still a high-performance action that may appeal to players who want a hybrid style feel with natural key surfaces. Both models have built-in three pedal units, so the key action sits in a traditional piano console.
Piano Sound and Speakers
The Casio AP-550 uses the Casio AiR sound engine and includes two concert grand samples, with 26 voices and 256 notes of polyphony. The Korg LP-380U uses Korg stereo piano samples, with 30 voices and 120 notes of polyphony. Casio offers higher polyphony and two distinct concert grand sounds, while Korg provides more voices overall.
The Casio has a 40 watt speaker system, according to the listing. The Korg specifies two 22 watt speakers, which is a combined 44 watts of amplification. The listings do not state the number or size of the speaker drivers in the Casio, nor the speaker configuration details for the Korg beyond the wattage.
The polyphony difference is significant for layered recordings, sustained pedal passages, and accompaniment tracks. 256 notes on the Casio allows more complex material without note stealing, while the Korg's 120 notes may be limiting for intermediate players who layer sounds or use the damper pedal heavily. For simple solo piano practice, both are adequate.
Features and Modes
The Casio AP-550 includes Bluetooth audio and MIDI through an included adapter, USB to Host, and three built in pedals. The Korg LP-380U has no Bluetooth, offers USB MIDI, and includes three built in pedals with a half-damper function. Casio clearly leads in wireless connectivity, while Korg adds a specified half-damper pedal response.
Voice counts are 26 on the Casio and 30 on the Korg. Neither listing details specific practice modes, metronome functions, recording features, or accompaniment styles, so a direct feature comparison beyond the listed specs is not possible from the supplied data. The Casio's touch-sensor control panel is listed as a con, which suggests it may be less tactile than physical controls.
Both digital pianos are traditional console designs with three pedals integrated into the cabinet. The Korg's half-damper pedaling is a clear feature for expressive playing, while the Casio listing does not mention half-damper support. Buyers who want built in Bluetooth should choose the Casio; those who prefer a simpler wired setup may accept the Korg.
Build, Design and Portability
The Casio AP-550 is a traditional console with a sliding cover and weighs 109 pounds (49.5 kg). The Korg LP-380U is a slim console that is only 26 cm deep, with a key cover, and weighs 81.6 pounds (37 kg). The Korg is substantially lighter and shallower, which gives it a clear advantage in portability and placement.
Casio's design leans toward a furniture piece with a sliding cover, and the listing scores build and portability at 9 out of 10. The Korg scores 10 out of 10 in the same category, and its plain cabinet styling is listed as a con. However, the 26 cm depth is called the slimmest three pedal console around in the supplied materials.
Neither model is portable in the stage piano sense, but the Korg is easier to move and position in a small room or tight hallway. The Casio's 109 pound weight likely requires careful placement and possibly two people for assembly, though the listing does not state assembly instructions. The Korg's key cover and Casio's sliding cover both protect the keys from dust.
Connectivity
The Casio AP-550 has Bluetooth audio and MIDI via an included adapter, plus USB to Host. The Korg LP-380U offers USB MIDI only and has no Bluetooth. This gives Casio a connectivity score of 9 out of 10, while Korg scores 6 out of 10.
Casio's Bluetooth adapter allows wireless audio streaming to the piano's speaker system and wireless MIDI communication with compatible apps. The Korg requires a wired USB connection for MIDI to a computer or mobile device. The listing does not mention any audio line inputs or line outputs for either model.
For a player who uses a tablet for sheet music, backing tracks, or piano learning apps, the Casio offers a more flexible setup. The Korg's USB MIDI is still sufficient for basic recording and software instruments, but wireless connectivity is a clear Casio advantage.
Setup and Accessories
The listings do not specify every accessory that comes in the box, such as a bench, music rest, power cable, or printed manual. Casio includes the Bluetooth adapter, which is a notable extra. Korg does not include Bluetooth, so no adapter is needed. Both pianos have built in three pedal units, so no separate pedal bar or stand is required.
The Casio AP-550, at 109 pounds, is heavier and may be more involved to move into a room or set up. The Korg LP-380U at 81.6 pounds is lighter and its 26 cm depth may simplify placement against a wall. Neither listing states the assembly time or whether a second person is recommended.
Buyers should confirm with the seller which included items are standard, since the supplied product facts focus on the instrument rather than packaging. The built in pedals and integrated cabinets mean that once set up, the piano looks like a unified console without loose parts.
Daily Use
During daily practice, the Casio's touch-sensor panel is listed as a con, which may mean adjusting settings is not as immediate as with physical buttons. The Korg listing does not describe its control interface, so a direct comparison of button feel cannot be made from the supplied data. Both models have key covers that protect the keyboard when not in use.
The Korg's slim depth and lighter weight make it easier to fit into a bedroom, classroom, or small apartment. The Casio's traditional cabinet with sliding cover may take more floor space. The Korg's 2 x 22 watt speakers and Casio's 40 watt system should be adequate for home practice, but the listings do not describe room size suitability.
The Casio's 256 note polyphony means that daily practice with layered sounds, sustained chords, and pedal work should not drop notes. The Korg's 120 note polyphony may be sufficient for straightforward piano pieces but could show limits with dense material. Casio's Bluetooth also makes it easier to stream a backing track or lesson app audio wirelessly each day.
The Deciding Question
The main decision is between key action and compactness versus connectivity and polyphony. The Korg LP-380U wins the key action category with 29 out of 30 compared to the Casio's 27 out of 30, and it is much slimmer and lighter. The Casio AP-550 wins connectivity with Bluetooth audio and MIDI plus 256 note polyphony versus 120 on the Korg.
Value scores also point in different directions. The Korg scores 10 out of 10 for value, while the Casio scores 7 out of 10. The Korg gives up Bluetooth and higher polyphony but delivers a top rated action and strong speakers in a compact cabinet. The Casio adds wireless features and a larger polyphony count but is heavier and more expensive according to the value rating.
If space is limited and the piano will be used mainly for traditional practice, the Korg's RH3 action and slim profile are hard to beat. If the player wants wireless audio, MIDI apps, high polyphony for layers, and a more traditional cabinet, the Casio makes more sense. Both are solid console digital pianos with built in three pedals.
Who Should Buy Which
Choose the Casio Celviano AP-550 if you want Casio's best action and sound below the Grand Hybrid series, with two concert grand samples, 256 note polyphony, a 40 watt speaker system, and Bluetooth included. It is ideal for a player who wants a traditional cabinet with a sliding cover and can manage the 109 pound weight.
Choose the Korg LP-380U if you want Korg's best action in a slim home cabinet with three pedals and real speakers, and you prioritize the RH3 touch over Bluetooth and high polyphony. It is the better choice for tight spaces because it is only 26 cm deep and weighs 81.6 pounds.
Avoid the Casio if you want the proven RHIII or GH3 actions at a similar price, or if the heavy cabinet is a problem. Avoid the Korg if you need Bluetooth, 192 note or higher polyphony, or a furniture grade finish. The supplied best for and avoid if notes make these trade offs clear.
Casio Celviano AP-550
Pros
- Hybrid action with spruce-blended keys and a longer pivot than the Smart Scaled action
- Two distinct concert grand samples and 256-note polyphony
- 40 watt speaker system and Bluetooth included
- Traditional cabinet with a sliding cover
Cons
- Heavy at 109 pounds
- Touch-sensor panel again
- Priced against the Kawai CN201 and Yamaha YDP-184, both with longer-established actions
Korg LP-380U
Pros
- RH3 flagship action in a home console
- Only 26 cm deep, the slimmest three-pedal console around
- Powerful 2 x 22 W speakers for the size
- Thirty sounds with strong electric pianos
Cons
- 120-note polyphony
- No Bluetooth
- Plain cabinet styling
Who Should Buy Each
Casio Celviano AP-550
- You want wooden elements in the keys without Grand Hybrid prices
- You want two contrasting grand pianos and 256-note polyphony
- You want 40 watts of speakers in a traditional cabinet
Korg LP-380U
- You want RH3 at home with speakers and a three-pedal base
- Your room needs the shallowest console possible
- You play electric piano and organ parts as well as piano
Quick Decision Guide
| If you want the highest-rated key action and the slimmest cabinet | Choose Korg LP-380U |
| If you need Bluetooth audio and MIDI plus high polyphony | Choose Casio Celviano AP-550 |
| If you have limited space and want a lighter console | Choose Korg LP-380U |
| If you prefer a traditional cabinet with a sliding cover and two concert grand sounds | Choose Casio Celviano AP-550 |
| If you want the strongest value score per the listing | Choose Korg LP-380U |
FAQ
About This Comparison
Mandrillis Team
The Mandrillis editorial team researches and compares audio and music gear using manufacturer documentation, verified specs and real buyer feedback, so you can make a confident purchase without wading through marketing claims.
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