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Casio PX-870 Privia Digital Piano - Black Bundle vs MUSTAR Digital Piano 88 Key Weighted with Stand,

Updated August 2026 — Casio PX-870 Privia Digital Piano - Black Bundle wins on sound quality and key feel, MUSTAR Digital Piano 88 Key Weighted with Stand, wins on portability and value.

The Casio PX-870 offers superior sound quality and features, making it the better choice for serious players, while the MUSTAR is a budget-friendly option for beginners.

Why Casio PX-870 Privia Digital Piano - Black Bundle is better

Sound Quality

Casio has a powerful 4-speaker system.

Build Quality

Casio features a premium wooden cabinet.

Learning Features

Casio includes a built-in music library and MIDI recorder.

Why MUSTAR Digital Piano 88 Key Weighted with Stand, is better

Portability

MUSTAR is lightweight and easy to transport.

Price

MUSTAR is significantly cheaper.

Setup

MUSTAR has a quick-release stand for easy assembly.

Overall score

Casio PX-870 Privia Digital Piano - Black Bundle
85
MUSTAR Digital Piano 88 Key Weighted with Stand,
65

Specifications

SpecCasio PX-870 Privia Digital Piano - Black BundleMUSTAR Digital Piano 88 Key Weighted with Stand,
BrandCasioMUSTAR
Key ActionWeightedSemi-Weighted
BluetoothYesYes
Headphone JackYesYes
MIDI RecorderYesNo

Dimension comparison

Casio PX-870 Privia Digital Piano - Black BundleMUSTAR Digital Piano 88 Key Weighted with Stand,

Price Comparison

The Casio PX-870 Privia Digital Piano is priced at $899.00, making it significantly more expensive than the MUSTAR Digital Piano, which costs $179.99. This means the Casio is about 400% more expensive than the MUSTAR option. Despite the higher price, the Casio offers a more comprehensive bundle that includes accessories such as a furniture bench, headphones, and online lessons, enhancing its overall value for buyers looking for an all-in-one package. On the other hand, the MUSTAR is an appealing budget-friendly choice, particularly for those who are just starting out with piano playing.

Build Quality

The Casio PX-870 boasts a stylish modern design with a wooden cabinet, contributing to a more substantial, premium feel compared to the MUSTAR, which features MDF material. While both instruments are designed to withstand regular use, the Casio’s aesthetic and structural quality may appeal to those looking for a more traditional piano look in their home. The MUSTAR, on the other hand, is designed to be portable and easy to set up with its heavy-duty double-X shaped stand, making it suitable for beginners or casual players who need mobility in their instruments.

Key Action and Feel

The Casio PX-870 features 88 scaled, weighted hammer-action keys with simulated ebony and ivory textures, providing an authentic piano feel that is particularly beneficial for serious players. The advanced Tri-Sensor II technology allows for nuanced playing, which can be crucial for developing proper technique. In contrast, the MUSTAR has 88 semi-weighted keys that are also touch-sensitive, but may not deliver the same level of responsiveness and realism as the Casio. This difference can be significant for players seeking a genuine piano experience, especially for classical and expressive music.

Sound Quality

Sound quality is a strong point for the Casio PX-870, which includes a powerful 4-speaker sound projection system that fills the room with rich, dynamic audio. It features an award-winning AiR Sound Source that delivers exceptional piano sound with detailed resonance, making it ideal for performances. The MUSTAR, while it also offers a reasonable sound experience through its built-in stereo speakers, provides 128 tones and 64 polyphony but may not match the depth and richness of the Casio’s sound projection system. For those prioritizing sound authenticity, the Casio stands out as the superior choice.

Learning Features

The Casio PX-870 is equipped with several features that cater to learners, including a built-in music library with 60 songs and a two-track MIDI recorder, which are valuable for practice and performance. It also has a duet mode, allowing teacher-student interactions on the same instrument. The MUSTAR provides educational features as well, such as a record/playback function and a headphone jack for quiet practice, making it suitable for beginners. However, the variety and depth of the learning tools offered by the Casio make it a more robust option for serious learners.

Portability

When it comes to portability, the MUSTAR Digital Piano excels with its lightweight design and easy assembly. It comes with a waterproof padded case, making it convenient for players who need to transport their instrument frequently. The adjustable stand height adds to its versatility. The Casio PX-870, while not as portable due to its more substantial build, is still manageable for home use and can fit well into a variety of spaces. For musicians who prioritize mobility, the MUSTAR is the clear winner.

Additional Features

The Casio PX-870 is packed with additional features, including Bluetooth connectivity for seamless integration with devices, a unique Headphone Mode for optimized sound, and the ability to connect to apps for enhanced learning experiences. These features add significant value for tech-savvy musicians or those looking to enhance their learning. The MUSTAR also includes Bluetooth connectivity and a variety of voices and rhythms but may not provide the same depth in additional functionalities compared to the Casio.

Which should you buy?

Choosing between the Casio PX-870 and the MUSTAR Digital Piano ultimately depends on your specific needs and budget. If you are looking for a high-quality, feature-rich piano experience with premium sound and build quality, the Casio PX-870 is worth the investment at $899.00. However, if you are a beginner or looking for a more portable and budget-friendly option, the MUSTAR at $179.99 provides solid functionality without breaking the bank. Each product has its strengths, so consider your priorities—whether it’s sound quality, portability, or overall value—before making a decision.