Casio CDP-S350 Review

Name: Casio CDP-S350
Brand: Casio
SKU: casio-cdp-s350

Casio CDP-S350: a clear digital piano review for practice and comparison

Discontinued

88 Keys 10.9 kg Scaled Hammer Action II Beginner

Often compared with Casio CDP-S360 Donner DEP-20

Scores

Beginner

6.4

Night Practice

3.9

Portability

5.5

Touch Reality

6.0

Value

6.0

Compare

Where to Buy

MSRP

$500

This model is discontinued. New-old-stock or used listings may still appear, so confirm the current listing status at retailers.

Amazon search B&H Photo search Sweetwater search

This model is discontinued; links may show used listings, remaining stock, or unrelated search results. These buttons open retailer search results and may include affiliate tracking where available. Stock and listing status can change without notice.

How These Scores Were Calculated

Beginner

6.4

Factor	This Piano	Points
Base Score	—	0.5
Lesson Function	Yes	+1.8
App Connectivity	No	+0
Bluetooth MIDI	No	+0
Recording	Yes	+0.8
Practice Basics (Metronome / Transpose / Layer-Split)	Yes	+0.6
Stand Included	No	+0
Damper Pedal Included	Yes	+0.4
Preset Songs	152	+1.5
Sound Variety	700 sounds	+0.8

Night Practice

3.9

Factor	This Piano	Points
Base Score	—	1.0
Headphone Jacks	1	+1.3
Headphone Type	3.5mm	+0.5
Headphone Optimization	No	+0
Bluetooth Audio	No	+0
Line Out	No	+0
Speaker Mute with Headphones	Yes	+0.7
Key Action Quietness	Scaled Hammer Action II	+0.4

Portability

5.5

Factor	This Piano	Points
Base Score	—	5.0
Weight	10.9 kg	+1
Width	1322 mm	-0.5
Battery	No	+0
Foldable	No	+0
Key Count	88 keys	+0

Touch Reality

6.0

Factor	This Piano	Points
Key Action Quality	Scaled Hammer Action II (grade 6)	+3.6
Key Count	88 keys	+1.5
Polyphony	64 notes	+0.4
Sound Modeling	AiR Sound Source	+0.5
Key Surface	plastic	+0

How was this calculated? — Read our methodology

Casio CDP-S350 review verdict

This Casio CDP-S350 review reads the published specifications from a comparison-first point of view: touch, sound, practice fit, value, and limits.

Casio CDP-S350 is best read as a portable digital piano for beginners and returning players. This review looks at weighted-key feel, sound, practice features, value, and realistic comparison points instead of treating the spec sheet as advertising copy.

Pros

• Key count: 88 keys, a clear basis for digital piano comparison.
• Touch: weighted hammer action, so the review stays focused on practice feel.
• Quiet practice: Headphone practice support.
• Connectivity: USB MIDI.
• Use case: Its best fit is home practice.

Cons

• Main limit: the need for large sound reserves and heavy pedal work.
• Stand cost and compatibility are separate checks.
• Used-market condition and support need careful checking.

Casio CDP-S350 is a portable digital piano that makes most sense when its strengths are matched to the right practice situation. The useful points are 88 keys, weighted hammer action, 64-note polyphony, 16W speakers, and a weight of 10.9 kg. In a digital piano review, those details matter more than broad claims about being the best digital piano overall. For home practice, this model can be a sensible candidate if the layout and feature set match the way the instrument will actually be used. Because it is discontinued, the condition, accessories, and local support matter more than the original launch position. The fairest comparison is with models in the same price and use class, where touch, speakers, headphone practice, and connectivity can be judged side by side.

Casio CDP-S350 evaluation points

Casio CDP-S350 key action and touch

Casio CDP-S350 uses a weighted hammer action. For a digital piano with weighted keys, the important question is not only whether the keys are heavy, but whether they help steady daily practice. The plastic key surface is a useful comfort detail. The specification lists 64-note polyphony; that is enough for ordinary pieces, while more layered playing or heavy pedal use benefits from a higher number. This makes the key action a practical comparison point rather than a decorative specification.

Who the Casio CDP-S350 is for

Casio CDP-S350 is most relevant for beginners and returning players. The main use case is home practice. Strengths: portability and easy placement. Limits: the need for large sound reserves and heavy pedal work. Buyers comparing digital pianos should also check the stand, pedal, headphone jack, app support, and local availability before deciding.

Casio CDP-S350 sound and speakers

Casio CDP-S350 offers 700 sounds and 16W speakers. That is the sound side of the review: enough variety for practice, but the real experience depends on speaker power, headphone use, and the room where it will be played. The headphone output supports quiet practice. For lessons, apps, or recording workflows, the useful connectivity is USB MIDI.

What to know before buying the Casio CDP-S350

Before buying Casio CDP-S350, compare it with nearby alternatives on touch, sound, portability, and value. A stand may need to be budgeted separately. A damper pedal is included, though some players may still want a fuller pedal unit. Because it is discontinued, the condition, accessories, and local support matter more than the original launch position. For searchers looking for a Casio CDP-S350 review, the practical conclusion is to treat it as one candidate in a digital piano comparison, not as a universal answer for every player.

Demo Video

Video coming soon for this model

We embed videos from manufacturer official channels and trusted reviewers. As soon as a suitable demo or review is available, it will appear here.

Specifications

Keys	88
Key Action	Scaled Hammer Action II
Polyphony	64 notes
Sounds	700
Weight	10.9 kg
Speakers	16W (×2)
Bluetooth	No

Spec terms are explained in the glossary. Glossary →

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Recommended Accessories

🪑

Stand

Stand not included (sold separately)

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.

Where to Buy

MSRP

$500

This model is discontinued. New-old-stock or used listings may still appear, so confirm the current listing status at retailers.

Amazon search B&H Photo search Sweetwater search

How It Compares

CDP-S350 vs CDP-S360

The CDP-S350 and CDP-S360 score very similarly across the main review axes. The CDP-S350 costs $99 less.

Casio CDP-S360 →

CDP-S350 vs DEP-20

the DEP-20 is stronger in quiet practice. The DEP-20 costs $131 less. Choose the DEP-20 if quiet practice matters most.

Donner DEP-20 →

CDP-S350 vs KA-120

The CDP-S350 scores higher in beginner support and piano-like touch, while the KA-120 is stronger in quiet practice. Choose the CDP-S350 if beginner-friendly features matters most.

Kurzweil KA-120 →

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Sources & transparency

This page is written by the operator, who has run the piano-learning site Piano Juku since 2017, based on published manufacturer specifications. We are not a retailer or tied to any maker — every model is compared by the same criteria. About the operator

Last verified: May 3, 2026
Data referenced from: Manufacturer official

How the 5-axis scores are calculated

We do not aggregate user reviews or star ratings (see methodology for why).

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