The psr E433 is perfect for a beginner who wants to compose music (there are enough sound, agreements and possible variations) or for someone who just wants to play the piano, with proper sonority; In addition an output and a USB input, recording or playing in USB or connect it to a PC, possibility to add a sustain pedal for the piano. To provide output power amp if you want decibels. For my part perfectly adequate apartment. The deluxe bundle is valuable and of good quality (foot stool Stagg + headphones Eagletone Original First + soft case for keyboard) all for an unbeatable price.