The E-Series keyboards offer everything you need to make high-quality music, including Yamaha Education Suitelearn-to-play functions, in an affordable package. Both models have a totally new design and provide players with more sounds and styles to explore than ever before – 385 voices and 100 Styles. The YPT-340 has 61 full-size keys with touch response. The Ultra-Wide Stereo DSP and the built-in speakers create a greater separation and a more spacious sound. With the new Master EQ you can optimize the overall sound with different EQ settings. Furthermore, the YPT-340 includes Registration Memories and an AUX line input has been added. Thanks to the Melody Suppressor, players can reduce the lead part of the AUX -in signal and perform along to their favorite songs stored on MP3 players. In addition, Yamaha offers iOS/Apple music apps for iPhone/iPad and iPod Touch that extend and enhance your music-making experience.Features61 full-size keysTouch Response550 VoicesDual- and Split-Function136 Styles32 voice polyphonyMaster EQ102 Preset-Songs2 Track Sequencer / 5 User-SongsUSB-to-hostYamaha Education SuiteRegistration MemorySpecsNumber of Keys 61Touch Response YesDisplay Type YesBacklight YesLanguage EnglishPanel Language EnglishVoices Polyphony Number of Polyphony (Max.) 32Preset No. of Voices 550 (187 panel Voices + 18 drum/SFX kits + 345 XGlite Voices)Effects Reverb YesChorus YesUltra-Wide Stereo YesMaster EQ YesHarmony YesNumber of Styles 136External Styles YesOne Touch Setting (OTS YesNumber of Songs 102Recording Number of Songs 5Number of Tracks 2Lesson / Guide Lesson [KEYS TO SUCCESS], [1 LISTENING, 2 TIMING,3 WAITING], [PHRASE REPEAT], [A-B REPEAT],[CHORD DICTIONARY]Registration memory YesMiscellaneous Metronome YesTempo Range YesTranspose YesTuning YesMelody Suppressor (for AUX IN) YesDual YesSplit YesPortable Grand Button YesPanel Sustain YesConnectivity USB TO HOST YesMIDI IN/OUT —AUX IN Yes(Stereo-mini)Headphones/Output YesSustain Pedal YesAmplifiers and Speakers Amplifiers 2.5W+2.5WSpeakers 12cm ×2Dimensions (W x D x H) 945mm x 368.5mm x 121.2mmWeight 4.4kg (not including batteries) (9lbs., 11oz.)