The Pioneer SR-9 puts life back into your music by restoring ambience. With the SR-9 it's easy to simulate the acoustics of any size room, from an intimate piano lounge to a disco to the largest concert hall. To do so, all you do is push the reverb time control in for Echo Effect, and adjust to taste. You can adjust the reverberation time from 0 to 3 seconds. As an extra bonus, the same control also helps create another interesting Duet Effect. Pull the control out and adjust to taste, and it can make a soloist sound like a duet. Pioneer's striking Time/Depth Display lets you see the reverb effect you select as you create it. The display expands as you increase reverb intensity and contracts as you decrease it. When the SR-9 is in action, the display pulsates in time to the varying decay response. It is as eye-catching as it is functional.