Yamaha DGX-630 88 Full-Sized Keyboard with Weighted Action Review

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(More customer reviews)I am a complete piano novice, but my next-door neighbor, who plays for a living and owns a Kurzweil came over, and after playing it a few minutes said, "If you don't mind my asking, how much did this cost?" His keyboard is a few years old, but he said that he likes the action on this better than his, and he found the sound excellent.
I'm writing this review because I had a few questions that I wished I knew the answers to, but could not find anywhere online before I bought this product sight unseen.
1. Question: How many degrees of loudness are there, depending on how hard you strike?
Answer: A lot. At least 8, but I suspect if my fingers were more dextrous and my ear better I could hear many more levels of touch sensitivity. In any case it sounds in this respect just like a piano to me.
2. Question: Does the timbre of the note change depending on how hard I strike the key?
Answer: Yes, and this effect depends on which keys you strike. In the low notes you hear a realistic sounding distortion when you slam down on the key. On the high notes you hear that hollow sound of the wood piano frame when you nail it. This latter effect was so realistic that I had to turn off the keyboard to be sure it wasn't something that was physically happening inside the box rather than a simulated effect.
Question: On a sustained note does the sound simply fade, or does the quality of the sound change in a natural sounding way as it fades out?
Answer: Again, it sounds just like a real piano to me in this regard.
This keyboard has a "graded hammer action" so that the weight of the keys at the top is lighter than the weight at the bottom. While they may have reproduced this effect accurately, it is almost indiscernable to me with the keyboard off. But with the keyboard on, the weight of the keys feels absolutely distinct from top to bottom because the "strings" at the top and bottom respond so differently. That is, the sound is so good that it tricks your brain into sensing that the keys have completely different weights.
I bought it in spite of the fact that I wasn't sure of the answers to these questions, and it is exactly what I had hoped for. It feels and sounds just like a piano to me, especially with good headphones, which allow me to practice scales in my living room without driving my family insane.


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The new top of the range 88 keys Yamaha DGX-630 features a fully weighted 88-note Graded Hammer keyboard action, a new piano sound with 64-note polyphony and over 500 high quality sounds. The 88-key Yamaha DGX-630 is a weighted graded hammer action portable keyboard. Upgrades from the previous model include 64-note polyphony, a beautiful matching stand and an optional three-pedal unit, along with additional DSP (Digital Signal Processing) effects that enable realistic sounding Distortion Guitar and Rotary Organ. The Yamaha DGX-630 also includes USB MIDI and USB to Device for removable storage, along with a high resolution Live! Grand stereo sample, song recorder, score and lyric display. The Yamaha DGX-630 offers an affordable, feature-packed portable keyboard. It also boasts an authentic grand piano-like touch: heavy in the low end, feathery light in the highs, and amazingly responsive throughout. Yamaha Education System (YES) offers an easy, intuitive method of learning how to play a keyboard music instrument. Stand, AC Adapter, Foot Pedal, and Quick-Start DVD are included. USB connectivity for easy matchup to optional PC software complements. Yamaha DGX Series offers a high quality, moderately priced digital piano, but also a diverse feature set typically found on high-end professional synthesizer products. 88 Graded Hammer Standard (GHS) keysDual and split modesFC5 sustain pad, music rest and CD-ROM includedGM and XG-Lite compatibleHeadphone portLarge backlit (blue) LCD displayMulti-fingering mode and 'full' keyboard mode availableOptional 3-way pedal board available (model LP-7)Over 500 voices to select fromPitchbend wheelRegistration memories (2 x 8 banks)Reverb, Chorus, DSP and master EQ effectsSupplied with fixed-frame wooden stand and AC power adaptorSweet, Live and Cool voice technology USB connectivityYamaha Education Suite (Y.

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