Here is some of what has changed from the old RD-700SX to the new RD-700GX:
1) Improved piano sound
2) New improved electric pianos (vintage Rhodes)
3) “Ivory Feel” keys with Escapement
4) Audio playback of WAV, AIFF, and MP3 files via USB memory; easy on stage control with Audio Key feature. Comes with Cakewalk Sonar LE software.
5) "Piano Designer" function for editing Hammer Noise, Damper Resonance, Duplex Scale, plus eight multi-effects processors
6) Three MIDI outputs, multiple zones for master-control functionality, 4 assignable Zone Level sliders
7) 200 rhythm patterns. Comes with Cakewalk Sonar LE software
The SX had 128 M bytes of wave ROM
The GX has 256 M bytes of wave ROM
The SX had 208 Normal Tones
The GX has 242 "Normal Tones
SX memory : 1 meg
GX memory: 4 meg
From Roland's site:
"Stunning 88-key stereo multi-sampled piano sounds
88-key weighted keyboards: PHA II “Ivory Feel” with Escapement
SuperNATURAL electric pianos for unprecedented realism (VINTAGE RHODES)
Audio playback of WAV, AIFF, and MP3 files via USB memory; easy on stage control with Audio Key feature
Piano Designer function for creating the perfect custom instruments, plus eight multi-effects processors
Three MIDI outputs, multiple zones for master-control functionality
The RD-700GX is anchored by Roland’s finest 88-key stereo multisampled piano engine including a brand-new super expressive piano sound, with every note captured using a generous amount of wave capacity. In addition to the super-expressive onboard piano sound-sets, other essential instruments are built into these new pianos, including EPs. You can even customize and save your sounds for instant recall.
Your fingers will love the RD-700GX’s top-of-the-line PHA II “Ivory Feel” keyboard with Escapement. This amazing keyboard technology reproduces the real surface feel of ivory acoustic piano keys providing a familiar stability and comfort to the pianist. The keys are designed to absorb moisture, ensuring a secure, slip-proof feel, even in the hottest stage environments where sweaty hands can spell disaster.
Another distinguishing feature of the RD-700GX is its electric-piano sound bank derived from Roland’s unique SuperNATURAL technology. Enjoy realism, expression, and control like never before with this special selection of EPs that provide amazingly authentic and organic tonal response.
USB Audio Enhancement
Play audio through the RD-700GX directly from a USB memory key. Flexible file compatibility enables playback of Standard MIDI Files, WAV, AIFF and MP3s. The "Audio Key" feature lets you use the bottom 15 keys for controlling start song, song length, etc. In addition, you can connect directly to a PC via USB and tap into Cakewalk SONAR LE software, included in every RD-700GX package.
For those who like to get inside an instrument and customize its sounds, the RD-700GX’s Piano Designer feature is your key to unlocking and personalizing the sound-set, down to the smallest details such as Hammer Noise, Damper Resonance, Duplex Scale, and more. In the RD-700GX, sounds can be further customized with the 8 channels of powerful onboard multi-effects.
Sound Expansion, Master Control
Expand and personalize the internal sound-set by adding up to two optional Roland SRX expansion boards, then take your music to the stage. The RD-700GX makes great master controller, thanks to multi-zone functionality and three MIDI outputs.
55 lbs. 2 oz.