Full sized keyboard piano: Amazon.com: Alesis Recital Pro – 88 Key Digital Piano Keyboard with Hammer Action Weighted Keys, 2x20W Speakers, 12 Voices, Record and Lesson Mode, FX and Display : Musical Instruments

Costzon 88 Key Piano Keyboard, Full Size Semi-Weighted Keyboard, Porta – costzon


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Costzon 88 Key Piano Keyboard, Full Size Semi-Weighted Keyboard, Portable Electric Piano

is backordered and will ship as soon as it is back in stock.

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  • Description
  • Our Guarantee
  • Shipping Guide
  • Rich Sound & Powerful Stereo Speaker: The 88-key electric keyboard contains 128 tones, 128 rhythms and 20 demos, which is convenient for you to practice chords and songs, create your own music. And the stereo speakers provide better sound performance.
  • Full-Size & Semi-Weighted Keys: The full-size semi-weighted keys realistically restore the touch sense and sound effect of an acoustic piano. It can rebound faster and reduce more strength, which is more suitable for beginners. What’s more, the ABS material and wood grain surface further improve your using experience.
  • Multiple Interfaces & Wireless Connection: The digital piano is designed with 5 device interfaces to connect sustain pedal, MP3, microphone, headphone and USB/MIDI. With wireless APP and audio connection, the keyboard makes your piano practice more easily.
  • Lighted Keyboard & Split Function: The keyboard with illuminated LED effect helps children and beginners follow the music more easily. The music stand can fix your electronic device and music books. The split keyboard enables you and your friend to perform a piece together. In addition, more functions can be achieved by means of the button.
  • Portable Digital Piano & Long Playing Time: The carrying case is made of waterproof and wear-resistant oxford cloth, so you can carry the digital piano anywhere and keep it in a good condition when not in use. Besides, the built-in rechargeable lithium battery offers 10-12 hours standby after being charged 4 hours.

Do you want to learn to play the piano? Our 88-key digital piano is a perfect choice.
The full-size semi-weighted keys are exquisitely crafted from ABS material according to 1:1 piano key ratio, which is friendly to beginners to build the proper finger technique. The 128 rhythms and 128 tones allow you to customize beautiful sound. The various device interfaces as well as wireless APP and audio connection bring much convenience for teaching, practicing, music creation, and performance. And you can put electronic devices and music books on the music stand. The intelligent LED-lighted function increases the fun of learning and does some help in music enlightenment. Thanks to the portable carrying bag and 12 hours battery life, you can enjoy music anywhere and anytime.

128 rhythms, 128 tones for rich sound settings
Stereo speakers for high-quality surround sound
Full-size semi-weighted keys with wood grain design provide real touch
ABS material for durable and safe use
5 device interfaces support your computer, microphone, etc
Play your favorite songs through piano and connect Apps via wireless connection
Practical music stand supports different sizes of books and tablets
LED lighted keyboard increases fun of learning
Multifunctional setting button for great convenience and more possibilities
Long battery life up to 12 hours after 4 hours charging
Portable carrying case for convenient storage and carriage

Keyboard Material: ABS
Keyboard Dimension(Not Include the Size of Music Stand): 49. 6″ x 8.3″ x 2.4″ (L x W x H)
Carrying Case Dimension: 50.5″ x 9″ x 2.5″ (L x W x H)
Net Weight:10.45 lbs
Battery Type: Lithium
Battery Capacity: 1750 mAh
Output Power of Piano: 500 MV
Input Power of Charger: 5V 2A
Charging Time: 4 h
Playing Time:10-12 h

The Costzon guarantee is simple: provide customers with 100% satisfaction with of our Costzon branded items and services. If you are not happy with our service or product or in need of help, drop us an email to [email protected] and we won’t stop working until you’re satisfied.

We offer a 90-day return guarantee:
Costzon has built its reputation by designing a comfortable and pleasant lifestyle experience without compromising on aesthetics. Each of our product uses innovative forms of scenic, perception and design to bring Costzon to life. If you receive any item not meeting expectation in 90 days from the date of purchase, please contact our service support team. Please refer to our Return Policy for more detailed information about returns. We guarantee that we will do our best to resolve your issue as quickly and thoroughly. We want you to be our lifelong customer.

We guarantee you a quick response:
Our support team pledges that we answer your inquiries up to 48 hours and will help and guide for many years to come.

We guarantee your privacy will be respected:
We will not distribute your email address, receipt information or any other personal information to others. We will never discuss your personal situation with anyone else. We want to earn your trust. We will always treat you with respect and we value your privacy. If you want to know more about how we use your information, please refer to our Privacy Policy.

Shipping Costs & Tax
1. Free Standard Shipping on all items.
Shipping charges apply to orders from Canada.

2.In accordance with state and local law, your online purchases is subject to state and local sales taxes in effect where delivery is made. If you live in a state that does not impose a sales tax, you may still see tax calculated on your order if shipped to another state. To the extent any of the factors affecting the calculation of sales tax change between the time you place an order and the time your credit card is charged, the amount appearing on your order as Tax may differ from the sales taxes ultimately charged. Your invoice will reflect the final total tax, which includes state and local taxes.

If you are a tax-exempt organization or reseller, you can apply here for tax exemption on your Costzon.com orders. Afer you finish, please send the completed form to [email protected] for review.

Shipping Locations
1. Shipping is only valid for shipping addresses in the United States (excluding Alaska, Hawaii, Puerto Rico, and Guam) & Canada  (excluding Northwest Territories, Nunavut, and Yukon) 

2. We do not deliver to FPO, APO, and PO Box addresses.

Shipping Methods
All orders are shipped out via UPS or USPS or FedEx or Pioneer.

Shipping and Delivery Estimates
We ship in-stock orders as soon as possible. This is often the day you placed it or the day after, but there are situations where it may take longer. If your item is in stock, your order is estimated to ship on the next business day. All estimates are based on business days.

If you choose to pay by credit card, your order will be billed within 24 hours. The items will usually be shipped out next business day after we received payment. If you have ordered multiple items with different delivery destinations, you may receive separate order shipments. Delivery will typically take 3 to 5 days, depending on your destination and the shipping carrier. In the event of any shipment not being fulfilled or shipped out after label creation, shipments exceeding 8 business days have the option to choose order cancellations or partial refunds. Please see return policy for more details.

When encountering with force majeure, the processing of orders will be delayed. Nevertheless, it is ensured that your order will be processed in a fast manner when weather permits.

Costzon takes every reasonable precaution to ensure that the products are not damaged during shipping. However, damage to products can occur during travel from the Costzon shipping facility to homes or businesses. If the item is damaged in transit, please choose the corresponding item in “My Orders” to apply for a refund or a return within 3 business days after receiving your package. Note any visible damages (scrapes, dents, etc.) or operationally damaged (the system will not work), take the digital photographs and provide Costzon with proof of the damage in detail as this will assist us in processing your order refund.

Orders Tracking
You will be sent at least 2 emails for each order you place:

Once you’ve placed an order, you will receive an Order Acknowledgement email to confirm your order details. Once your item ships, you will receive a Shipment Confirmation email including your order number, the carrier’s information, the date and time the order was placed, the status of the order, and package tracking numbers for items that have shipped. For exact locations of your shipment, please track your items on the carrier’s official website.

You can visit our online Order Status 24 hours a day, 7 days a week, to view the most up-to-date status of your order. Sign in with your Costzon account and password to get a summary of past orders by visiting our Track Your Order’ Page for detailed steps of order tracking.

1. Please verify you have the correct shipping address on your order PRIOR to making payment as this is the address we will ship to.

2. We are not responsible for any return shipping cost if product didn’t meet your expectation nor placed a wrong order after order has been shipped out.

3.Items that weighs less than 150lbs will be dispatched by UPS. While, items that are weigh more than 150lbs will be delivered by truck.

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Digital Piano Key Mechanics and Types

The Digital Piano is designed to be as close to the original as possible, it creates sound in the same way as a classical grand piano – with the help of hammers. Modern models have high quality sound transmission and bear little resemblance to synthesizers.
The keyboard is the heart of any piano. It is from the perfection of its mechanics that the possibilities of a musician depend. A high-quality digital instrument allows you to develop virtuoso playing skills.

How the digital piano mechanism works:

  • The keys of the instrument are equipped with one or more sensors that “remember” the speed at which the keys are pressed;
  • in accordance with the speed of pressing and with the force of pressure, the built-in microprocessor corrects the sound produced by the instrument, raising or lowering the volume, making it longer or shorter;
  • The processed sound is output from the instrument’s speakers or headphones.

Digital pianos use four types of keyboard mechanics: hammer action, synth, semi-weighted, hybrid. Mechanisms mainly differ in how much force is needed to press the key, as well as in how close the feel of the keyboard is to that of an acoustic instrument. Which mechanism to choose depends on the needs of the musician. Consider each mechanism in more detail.

Hammer action

The hammer action keyboard comes in two varieties:

  1. Graduated, found on most digital pianos, is designed to give the keys a similar feel to acoustic pianos. The keys in the lower register are pressed a little harder, and in the upper register they are lighter, as in acoustic pianos, where the thickness and length of the strings are different and the pressure on the keys is distributed accordingly. This type of keyboard helps to reproduce all the nuances of timbres with a deep gradation of sound coloring, depending on the strength of the blow.
  2. Balanced provides the feeling of playing like on acoustic pianos, but without the distribution of pressure from the lower octave to the upper one.


The lightest mechanical type in terms of pressing force. Uses a spring mechanism. The keys are most often made of plastic – thin and small. Synthesizer keyboard is dynamic and non-dynamic. On dynamic volume depends on the speed of pressing (on the strength of the impact on the keys). The device is suitable for beginners and those who are well versed in the specific playing techniques of all kinds of synthesizer, organ, and other timbres of various acoustic instruments.

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This type of keyboard is often found on budget instruments. Semi-weighted keyboard allows you to embody certain performance nuances. This is the optimal middle choice for beginners. Great for those who constantly alternate between synth and piano tones. Semi-weighted keyboards use the same spring mechanism, but have more key resistance compared to synth keyboards, using stiffer springs or additional weights. As a result, the keys return to the top position a little slower.


This type of keyboard uses similar or identical mechanisms to acoustic pianos. Full size wooden concert grand piano keys made from the same materials and processes are used. Pressing a key sends the hammer along the same vertical path, with the same weight, as an acoustic instrument.

Our online store of musical instruments and musical equipment Discount Music Supply offers you to buy keyboard musical instruments of various brands, with different mechanics. In order to choose and purchase the instrument you need – contact the store consultants or use the catalog of musical instruments located on the site.


  • keyboards
  • piano
  • piano
  • synthesizer
  • digital piano

Digital Piano Keyboard Details

“Sounds like an acoustic piano” is the best compliment you can give a digital instrument. Today we will talk about choosing a digital piano, or rather, about the main selection criterion – the keyboard.

Operating mechanism

Metal strings are stretched over a cast-iron base inside the case. Each key has a hammer mechanism that comes into action when the key is pressed: the hammer hits the string, it starts to vibrate, and we hear the sound. Its volume depends on the strength of the strike on the string, that is, on the force of pressing the key.

Sound production occurs inside a closed space and depends on many factors: wood type, varnish, complex structural features, key mechanics, etc.

In this case, you get a completely natural sound. On this, the advantages of an acoustic piano, perhaps, end. But of the minuses, one can note the large weight and size, the need for constant adjustment and exposure to the influence of the external environment.

Piano sound mechanism

Digital pianos do not have complex mechanics, and sound production occurs through a digital circuit that generates sound.

A good digital piano provides the most realistic acoustic instrument sound and real physical feel of playing the keys. The keyboard of such instruments has a hammer mechanism (weighted keys). At the same time, the keys have the same shape as those of an acoustic piano, and when playing, the feeling of recoil from a hammer strike on a string is preserved, thanks to the competent design of the keys that imitate this feature.

Playing the digital piano

History of the instrument

The path to the modern hammer mechanism took more than a dozen years. At first, the keys were light, and thanks to the springs, after pressing, they immediately returned to their original position. Now such keys are used in synthesizers. Later, each key was weighted to achieve a more natural playing feel, while retaining the spring mechanism. And only then did special hammer mechanisms appear that imitate the keyboard of an acoustic piano. They repeat the entire chain of impact – from the key to the hammer, which, in the case of a digital piano, does not hit the string, but on special sensors – sensors. Their number can vary from 1 to 3, which also indirectly affects the nuances of the game. For example, a half-press of a key should sound appropriate, while a super-slow press should make no sounds at all.

Sensor operation in pianos

Basic types of electronic instrument keyboards

Hammer action (hammer action)

It is divided into two types: graduated hammer action and balanced hammer action.

  • Graduated keyboards are found on most digital pianos and are designed to give the keys a similar feel to acoustic pianos. The word “graded” means that the keys are pressed a little harder in the lower register, and lighter in the upper register, as in acoustic pianos, where the thickness and length of the strings are different and the pressure on the keys is distributed accordingly. Such a keyboard helps to reproduce all the nuances of timbres with a deep gradation of sound coloring, depending on the strength of the blow.

  • The balanced hammer action keyboard also provides the feeling of playing acoustic pianos, but without the pressure distribution from the lower octave to the upper one. Most often it can be found in synthesizers and MIDI keyboards.

Synth action or organ keyboard

The width of its keys is slightly smaller than the piano keys, and are pressed very easily. The synthesizer keyboard, in turn, is dynamic and non-dynamic. On dynamic volume depends on the speed of pressing, that is, on the force of impact. The device is suitable for novice performers, as well as for those who are well versed in the specific techniques of playing all kinds of synthesizer, organ, and other timbres of various acoustic instruments.

Synthesizer keyboard

Semi-weighted keyboard (semi-weighted)

Such a keyboard has keys that can be both synthesizer and piano keys in size and shape. However, at the same time, they do not have hammer mechanics, but are simply pressed noticeably harder than in a synthesizer. After an acoustic piano, such a keyboard is easier to use than a synthesizer keyboard.

So, the hammer action keyboard of a digital piano is distinguished by:

  • 88 full-sized keys, different in weight (in the upper case – light, in the lower case – heavy), which is fully consistent with the acoustic counterpart.

Keyboard semi-weighted

  • Keyboard sensitivity to pressure. The force of pressing the key determines the volume of the note. The sensitivity of the entire keyboard is set by certain presets, most often separate “Touch” buttons are allocated for this function (“Hard” – for expressive play, “Medium” – standard, “Soft” – for children with fragile fingers, and others). In practice, the standard Medium mode is always used.

  • Velocity sensitivity discretization for each specific key. For example, in some CASIO models, there are 128 options for the strength (or intensity) of pressing a key. This means that the volume levels of the note being played will also be 128. Manufacturers pay great attention to this important nuance, since the ability of the instrument to convey all the colors of the work, its expressiveness or expression depends on it.

Semi-weighted electronic piano

Action types

The keyboard is the most important part of the digital piano, so global manufacturers are constantly improving the mechanics of the keyboards of their instruments, patenting and naming them. Consider the most popular of them.


The ROLAND PHA-4 (Progressive Hummer Action) keyboard reproduces the natural feel of playing a grand piano. It does not have any springs, only a hammer mechanism is provided, which contributes to the realistic resistance of the key. Also, some instrument models have an Escapement function (aftertouch or release), which allows you to convey all the nuances of the Pianissimo and Fortissimo playing. Special soft damping allows for less mechanical noise when played hard.

ROLAND PHA-4 keyboard mechanism

The key cover can be of two types: “under the plastic” or “under the ivory” (Ivory Feel). In the latter case, it is more convenient to play on the keyboard, since even slightly damp fingers do not slip on the surface.

The PHA-4 keyboard is available in three versions: the senior CONCERT, the middle PREMIUM and the junior STANDARD.


YAMAHA has long and successfully used the GH-3 (Graded Hummer 3) keyboard mechanism in its instruments, in which the number “3” indicates the presence of three sensors on one key, which allows you to more accurately reproduce the intensity of pressing it. It was YAMAHA who became the pioneer in this matter. Now three sensors are installed in devices from other manufacturers.

Keyboard Mechanism GH-3


This is not the most famous in the layman’s circles, but one of the best manufacturers of Japanese digital pianos. If you are a classical lover, then KAWAI digital pianos are your choice.

KAWAI piano keyboard

The CA (Concert Artist) series of digital pianos uses the RM3 keyboard, which has a full-length action key mechanism that is ideal for classical players. A true piano-style keyboard combined with excellent classical piano sound has made this brand very popular in many countries.

Keyboard RM3

The KAWAI CN series uses a keyboard with plastic keys, which is called RH II (Responsive Hammer II). Each key of this mechanism has at least three touch sensors to fully convey the features of any piece of music.

Keyboard with plastic keys RH II


With over thirty years of experience in the production of electronic musical instruments, CASIO releases new series of instruments every year, improving their keyboard.