The Korg SV-1 Stage Vintage Piano is a digital electric piano that features a variety of high quality sounds. It's designed to be a replacement for bulky vintage keyboards, giving you a ton of control and modern features while still maintaining a realistic and high quality sound. The SV-1 comes in either 73 or 88 key versions, with 36 different sounds in total as well as built in effects and amp modeling. As far as connections go, you've got pretty much everything you'd want to work with, including MIDI, 1/4" inputs and outputs, and 1/4" jacks for sustain and other pedals as well. In my opinion, the SV-1 is the most complete digital based electric piano, and definitely the most realistic sounding. The different types of sounds that the SV-1 has includes electric pianos, organ, acoustic piano, strings, and a number of others. It also has built in effects like chorus, phaser, and rotary, as well as reverb and delay. To give the keyboard an overall warmer sound, it's got a built in 12AX7 tube, which is something that I haven't seen on any other keyboards out there. It also has a really nice feel to it, as the keys feel realistic and not at all cheap. In terms of sound quality, the SV-1 is the real deal as it sounds as close to a real vintage electric piano as I've heard from the digital realm, and there are certainly some other good ones out there. I love the electric piano sounds on here, as it really sounds just like a Fender Rhodes. The organ and other patches follow in the same path as they are quite realistic as well. The price isn't very cheap, but for a complete keyboard like this, it's definitely priced right. If you're looking to get vintage keyboard sounds for live shows and beyond, the Korg SV-1 is the best digital vintage keyboard you can buy...