I really like the recessed power jack. I know it's not like the 9V jack is a high-failure point for pedals-- but if the 9V is mounted right on the circuit, and you step on it & flex that solder joint, or you just flex the whole board it's not ideal. With the jack recessed, it protects the pedal & circuit from that particular damage. But yea, you have to have a plug that fits it.