产品详细介绍yamahael900m升级版可以由el900升级得来，也可由el900b升级得来。指标与功能与原装的el900m是一致的。230种音色，210瓦，重103公斤-----------------------------------------------16presetmemories20notepedalboard49notekeyboa***awm2assignablekeyboardpercussionbuilt-inmdr***horizontaltouchkeyboardpercussionmidiprogrammablerhythmrhythmsequencertohostconnectortouchtonevavoiceeditingxg)