This accordion is in great cosmetic condition. I plugged it into an amp with a 1/4" cable, the sound outputs beautifully. However in order to get all the functions to work, you need an Elkavox 77. Since I don't have one, I couldn't test all the functions. The bass buttons and treble keys produce sound. This accordion may need service. Judging by the condition, everything should be working but I can't guarantee it. Even without the Elkavox, this accordion is a beauty and functions like a regular amplified accordion.The hardcase is included.