Casio
AP-470
$1,100
Casio's Celviano line — real furniture, real piano sound
8.6 Beginner 8.0 Night Practice 1.5 Portability 7.6 Touch Reality 7.0 Value
88 43 kg
View Details Casio
Casio PX-870 Review
The PX-770, upgraded where it counts — better sound, better feel, better headphones
88 Keys 34.3 kg tri sensor scaled hammer action ii Intermediate
Scores
How These Scores Were Calculated
Beginner
8.4| Factor | This Piano | Points |
|---|---|---|
| Base Score | — | 3.0 |
| Lesson Function | Yes | +1.5 |
| App Connectivity | No | +0 |
| Recording | Yes | +1 |
| Metronome | Yes | +0.5 |
| Transpose | Yes | +0.3 |
| Layer / Split | Yes | +0.3 |
| Preset Songs | 60 | +1.5 |
| Sound Variety | 19 sounds | +0.3 |
Night Practice
8.0| Factor | This Piano | Points |
|---|---|---|
| Base Score | — | 2.0 |
| Headphone Jacks | 2 | +2 |
| Headphone Type | 6.3mm, 3.5mm | +1.5 |
| Headphone Optimization | Yes | +1.5 |
| Key Action Quietness | tri sensor scaled hammer action ii | +0 |
| Volume Control | Yes | +1 |
| Bluetooth Audio | No | +0 |
Portability
3.0| Factor | This Piano | Points |
|---|---|---|
| Base Score | — | 5.0 |
| Weight | 34.3 kg | -1.5 |
| Width | 1393 mm | -0.5 |
| Battery | No | +0 |
| Foldable | No | +0 |
| Key Count | 88 keys | +0 |
Touch Reality
7.6| Factor | This Piano | Points |
|---|---|---|
| Key Action Quality | tri sensor scaled hammer action ii (grade 6) | +3.6 |
| Key Count | 88 keys | +1.5 |
| Polyphony | 256 notes | +1.5 |
| Sound Modeling | AiR Sound Source | +0.5 |
| Key Surface | ivory-feel | +0.5 |
Our Verdict
The PX-870 takes Casio's entry console formula and upgrades the parts that matter most: 256 polyphony, ivory-feel keys, a 40W four-speaker system, and headphone optimization — all for $300 more than the PX-770.
Pros
- • Tri-Sensor Scaled Hammer Action II with ivory-feel surface — keys grip naturally and don't get slippery
- • 256-note polyphony — no dropped notes even in heavy-pedal Romantic repertoire
- • 40W four-speaker system (vs PX-770's 16W/2 speakers) — significantly richer, fuller room sound
- • Headphone optimization simulates spatial depth — practice at night without flat, lifeless sound
- • Two headphone jacks (6.3mm + 3.5mm) — teacher and student or parent and child
- • Furniture stand with sliding key cover and three-pedal unit included
Cons
- • No Bluetooth at all — no wireless MIDI, no audio streaming, no app connectivity
- • Only 19 sounds — purely piano-focused, limited variety
- • 34.3 kg — heavy enough to need two people for setup
- • No app connectivity — can't use Chordana Play or learning apps
- • 2017 release — the design feels dated compared to newer Casio models
The PX-870 is the smarter buy if you can stretch your budget beyond the PX-770. The 40W four-speaker system sounds noticeably better in a room, the ivory-feel keys are more comfortable for extended practice, the 256 polyphony removes a real limitation, and the headphone optimization makes night practice genuinely enjoyable. The missing Bluetooth is the one frustration — in 2026, having no wireless connectivity feels behind the times. If Bluetooth matters, look at the Yamaha YDP-145 or Roland RP-107. But for pure piano quality per dollar in a console format, the PX-870 remains competitive.
Technical Deep Dive
About the Key Action
The key mechanism is the same Tri-Sensor Scaled Hammer Action II as the PX-770 — three sensors per key, weighted and graded. What's different is the surface: the white keys have a subtle ivory-like texture that gives your fingers something to grip, especially during fast passages or when your hands get warm. It's a small change that makes a surprisingly big difference in how confident you feel while playing. The action itself is honest and reliable — it won't fool an experienced pianist into thinking it's acoustic, but it develops proper technique and responds well to dynamics.
Who Is This Piano For?
You've decided the PX-770 is almost right, but you want better sound and a nicer touch. Maybe you practice at night and need headphones that don't sound flat and lifeless. Maybe you play pieces with lots of sustain pedal and worry about notes cutting out. Or maybe you've just tried an ivory-feel keyboard and can't go back to slippery plastic. The PX-870 is the PX-770 with its most important weaknesses addressed.
Specifications
| Keys | 88 |
| Key Action | Tri Sensor Scaled Hammer Action Ii |
| Polyphony | 256 notes |
| Sounds | 19 |
| Weight | 34.3 kg |
| Speakers | 40W (×4) |
| Bluetooth | No |
| Key Surface | Ivory Feel |
| Sound Modeling | AiR Sound Source |
| Headphone Jacks | 2 |
| Headphone Type | 6.3mm, 3.5mm |
| Headphone Optimization | Yes |
| USB MIDI | Yes |
| Line Out | No |
| Lesson Function | Yes |
| App Connectivity | No |
| Recording | Yes |
| Metronome | Yes |
| Transpose | Yes |
| Layer / Split | Yes |
| Preset Songs | 60 |
| Battery | No |
| Foldable | No |
| Dimensions (W×D×H) | 1393×299×801 mm |
| Stand Included | Yes |
| Pedal Included | Yes |
Recommended Accessories
🪑
Stand
Stand included
A sturdy X-stand or furniture-style stand is essential if one isn't included.
🎧
Headphones
Closed-back headphones with good bass response make practice sessions more enjoyable.
🎹
Sustain Pedal
The included pedal is usually basic. A half-damper pedal upgrade is worthwhile for expressive playing.
💺
Bench
An adjustable-height bench helps maintain proper posture during long practice sessions.
How It Compares
PX-870 vs AP-470
The PX-870 scores higher in Portability. The PX-870 costs $100 less. Choose the PX-870 if you prioritize portability.
Casio AP-470 →PX-870 vs YDP-S55
The YDP-S55 edges ahead in Beginner. The PX-870 costs $200 less. Choose the YDP-S55 if you prioritize beginner-friendly features.
Yamaha YDP-S55 →PX-870 vs KDP-120
The PX-870 scores higher in Night Practice and Touch Reality. The KDP-120 costs $100 less. Choose the PX-870 if you prioritize quiet practice.
Kawai KDP-120 →Frequently Asked Questions
Is the Casio PX-870 good for beginners?
Yes. The Casio PX-870 scores 8.4/10 on our Beginner scale, which means it has strong learning features like lesson modes, app connectivity, and built-in songs to help new players get started.
Does the Casio PX-870 have Bluetooth?
No, the Casio PX-870 does not have Bluetooth. You'll need a USB cable for app connectivity.
How heavy is the Casio PX-870?
The Casio PX-870 weighs 34.3 kg (76 lbs). It scores 3/10 on our Portability scale. This is a stay-in-place instrument — plan its location before setup.
Can I use headphones with the Casio PX-870?
Yes. The Casio PX-870 has 2 headphone jacks (6.3mm, 3.5mm). It scores 8/10 on our Night Practice scale. It also features headphone sound optimization for a more immersive experience.
How many keys does the Casio PX-870 have?
The Casio PX-870 has a full 88-key keyboard, the same as an acoustic piano. This gives you the complete range for any piece of music.
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The slimmest Arius — fits where other pianos cannot
9.9 Beginner 8.0 Night Practice 3.0 Portability 7.9 Touch Reality 7.7 Value
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View Details Kawai
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