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YAMAHA vs Ashun Sound Machines: Electronic Keyboards Compared by Specs

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This YAMAHA vs ashun sound machines electronic keyboard comparison looks at two very different instruments. You get a Yamaha YPT270 portable keyboard and an Ashun Sound Machines Hydrasynth synthesizer. Both are black electronic instruments, but they serve distinct purposes. The Yamaha offers 61 keys with accompaniment styles for beginners. The Ashun provides 49 keys with advanced wavetable synthesis for sound design. You must choose based on your playing goals.

Key differences

AspectYamaha 61-Key Portable KeyboardASM Hydrasynth 49-Key Synthesizer
Number of Keys6149
Key ActionFull-sized keysPolyphonic aftertouch
Sound EngineVoices and stylesWavetable synthesis
Weight12.6 pounds32.4 pounds
Form FactorPortableSynthesizer

Which one should you choose?

Choose Yamaha 61-Key Portable Keyboard if

  • You want a lighter instrument for easy transport
  • You are learning basic keyboard technique
  • You prefer built-in accompaniment styles

Choose ASM Hydrasynth 49-Key Synthesizer if

  • You need polyphonic aftertouch for expression
  • You want advanced sound design capabilities
  • You require a dedicated synthesizer interface

Verdict: The Yamaha YPT270 suits beginners who need a portable, lightweight keyboard with learning tools. The Ashun Hydrasynth is for producers seeking deep synthesis and expressive control. Your choice depends on whether you prioritize ease of play or sound creation.

Yamaha vs Ashun Sound Machines Specs

Number of keys

Edge: Yamaha 61-Key Portable Keyboard

The Yamaha YPT270 features 61 full-sized keys. This layout is standard for portable keyboards and supports a wide range of repertoire. The Ashun Sound Machines Hydrasynth has 49 keys. This shorter span is typical for compact synthesizers. The Yamaha provides more keys for playing complex chords or two-handed pieces. The Ashun offers a smaller footprint. If you need to cover more notes, the Yamaha has the advantage here.

Key action

Edge: ASM Hydrasynth 49-Key Synthesizer

The Yamaha YPT270 uses standard full-sized keys. The description does not specify touch sensitivity or aftertouch capabilities. The Ashun Sound Machines Hydrasynth includes a proprietary Polytouch keybed. This feature provides polyphonic aftertouch for each individual note. You can modify sound based on how hard you press each key separately. The Yamaha lacks this advanced control. The Ashun offers superior expressive capability for performance.

Sound engine

Edge: ASM Hydrasynth 49-Key Synthesizer

The Yamaha YPT270 uses pre-set voices and styles. It includes drum kits and special effects for accompaniment. The Ashun Sound Machines Hydrasynth uses a wavetable synthesis engine. It has three oscillators and dual wave mutators. You can design sounds from scratch. The Yamaha is limited to its library. The Ashun allows deep sound creation. For synthesis, the Ashun is far more powerful.

Form factor

Edge: Yamaha 61-Key Portable Keyboard

The Yamaha YPT270 is a portable keyboard. It weighs 12.6 pounds and measures 37 inches long. It is easy to move. The Ashun Sound Machines Hydrasynth weighs 32.4 pounds. It is heavier and less portable. The Yamaha is lighter and fits smaller spaces. The Ashun is a desktop instrument. If you need to carry your gear, the Yamaha is the better choice.

Included accessories

Edge: Yamaha 61-Key Portable Keyboard

The Yamaha YPT270 package includes a power adapter. This is necessary for operation. The Ashun Sound Machines Hydrasynth data does not list included accessories. You may need to purchase a power supply separately. The Yamaha provides the essential power component out of the box. The Ashun leaves this unspecified. The Yamaha has a clear advantage in what you receive immediately.

Which Yamaha or Ashun Keyboard Is Right For You

Beginner learners seeking a standard portable layout

Our pick: Yamaha 61-Key Portable Keyboard

The Yamaha YPT270 provides 61 full-sized keys, which is the standard layout for learning basic technique and repertoire. It includes a quiz mode to make practice engaging and smart chord features to help you play complex harmonies easily. This portable 12.6-pound unit is designed for straightforward music education and casual playing.

Sound designers needing advanced synthesis capabilities

Our pick: ASM Hydrasynth 49-Key Synthesizer

The Ashun Sound Machines Hydrasynth utilizes an advanced wavetable synthesis engine with three oscillators and dual wave mutators. It features polyphonic aftertouch for expressive control and includes a ribbon controller for real-time sound manipulation. This 32.4-pound unit is built for deep sound design and professional performance workflows.

Musicians prioritizing expressiveness and tactile control

Our pick: ASM Hydrasynth 49-Key Synthesizer

You get polyphonic aftertouch on every key with the Ashun Sound Machines Hydrasynth, allowing for nuanced dynamic expression. The instrument includes ergonomically designed pitch and mod wheels alongside a four-octave ribbon controller. These controls offer immediate access to modulation and pitch bending, essential for detailed performance and live synthesis.

Players wanting accompaniment styles and variety

Our pick: Yamaha 61-Key Portable Keyboard

The Yamaha YPT270 offers hundreds of high-quality voices, drum kits, and special effects to add variety to your music. Built-in styles provide natural-feeling accompaniment instruments across genres like rock, country, and samba. This feature set allows you to create full-sounding arrangements easily without needing external equipment or complex programming.

The products compared

Yamaha 61-Key Portable Keyboard

Best for: beginners seeking a basic portable keyboard

Number of Keys
61
Power Source
Power adapter
Included Accessories
Power adapter
Form Factor
Portable
Color
Black
Dimensions
37 × 4.25 × 12.5 inches

View on Amazon: Yamaha 61-Key Portable Keyboard Affiliate link

The Yamaha YPT270 is a 61-key portable keyboard designed for beginners. It features full-sized keys and includes a power adapter. The unit offers hundreds of voices, drum kits, and accompaniment styles. Smart Chord technology allows for easy chord playing. Weighing 12.6 pounds, it is lightweight and easy to move. This model suits those starting their musical journey.

Pros

  • 61 full-sized keys for learning technique
  • Includes power adapter for immediate use
  • Smart Chord feature simplifies playing
  • Lightweight at 12.6 pounds

Cons

  • Non-touch-sensitive keys limit dynamic control
  • No Bluetooth connectivity for wireless use
  • Lacks a built-in display for settings

Good fit if

  • You are a beginner learning basics
  • You need a lightweight portable instrument
  • You want simple accompaniment styles

Skip if

  • You require touch-sensitive dynamics
  • You need wireless Bluetooth connections
  • You want advanced sound customization

Verdict: Yamaha YPT270 61-Key Portable Keyboard is a simple entry-level tool for students. It fits beginners who prioritize portability and basic learning features over advanced performance controls.

ASM Hydrasynth 49-Key Synthesizer

Best for: compact sound design work

Number of Keys
49
Key Action
Polyphonic aftertouch
Sound Engine
Wavetable synthesis
Dimensions
38 × 22 × 9 inches
Weight
32.4 pounds

View on Amazon: ASM Hydrasynth 49-Key Synthesizer Affiliate link

The Ashun Sound Machines Hydrasynth is a 49-key synthesizer with polyphonic aftertouch. It uses wavetable synthesis with three oscillators and dual wave mutators. The unit weighs 32.4 pounds and measures 22 by 38 by 9 inches. This keyboard suits you if you need a compact, workflow-focused instrument for sound design.

Pros

  • Polyphonic aftertouch keybed
  • Wavetable synthesis engine
  • Four-octave ribbon controller
  • Dual wave mutators

Cons

  • Only 49 keys
  • Weighs 32.4 pounds
  • No display mentioned

Good fit if

  • You need polyphonic aftertouch
  • You want a compact synth
  • You prefer hardware control

Skip if

  • You need 61 keys
  • You want a portable keyboard
  • You need a display

Verdict: Ashun Sound Machines Hydrasynth 49-Key is a dense, feature-rich synth for sound designers who value polyphonic aftertouch and compact size.

Specifications side by side

Spec Yamaha 61-Key Portable Keyboard ASM Hydrasynth 49-Key Synthesizer
Number of Keys 61 49
Key Action not stated Polyphonic aftertouch
Sound Engine not stated Wavetable synthesis
Power Source Power adapter not stated
Included Accessories Power adapter not stated
Form Factor Portable not stated
Color Black Black,white,silver,red
Dimensions 37 × 4.25 × 12.5 inches 38 × 22 × 9 inches
Weight 12.6 pounds 32.4 pounds
Size 61-Key 22 x 38 x 9 inches
Model YPT270 HSKB

Frequently asked questions

Is the Yamaha YPT270 suitable for beginners?

Yes, it is designed for students seeking a basic portable keyboard. It features 61 keys and a simple layout. The instrument prioritizes portability and learning features over advanced performance controls. This makes it a practical entry-level tool for those starting their musical journey without complex requirements.

How heavy is the Yamaha YPT270 portable keyboard?

The Yamaha YPT270 weighs 12.6 pounds. Its compact dimensions are 37 inches in length, 12.5 inches in height, and 4.25 inches in width. This light weight and small footprint make it easy to transport and store in limited spaces compared to larger stage pianos.

What is the Ashun Sound Machines Hydrasynth model number?

The model number for the Ashun Sound Machines Hydrasynth is HSKB. It is a 49-key synthesizer built for compact sound design work. The unit measures 38 inches in length, 22 inches in width, and 9 inches in height, offering a dense feature set in a smaller form factor.

Does the Ashun Hydrasynth have polyphonic aftertouch?

Yes, the Ashun Sound Machines Hydrasynth includes polyphonic aftertouch. This feature allows for expressive control over individual notes, which is valuable for sound designers. The instrument is built for those who prioritize expressive capabilities and compact size in their synthesizer workflow.

How many keys does the Yamaha YPT270 have?

The Yamaha YPT270 has 61 keys. This is a standard layout for portable keyboards, supporting a wide range of repertoire for learners. The full-sized keys provide a familiar touch for beginners who need a standard keyboard experience without the bulk of an 88-key instrument.

What colors are available for the Ashun Hydrasynth?

The Ashun Sound Machines Hydrasynth is available in black, white, silver, and red. This synthesizer is designed for compact sound design tasks. The variety of color options allows you to choose a unit that fits your studio aesthetic while maintaining a professional, dense feature set.

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