The AD999 Pro Analog Delay Pedal takes the features of 2 of Maxon's most advanced delay units and combines them into a single, powerful guitar effect 100% Analog Delay with 900 mS delay time Gorgeous, warm, organic delay tone Dynamic distortion on Delay repeats Capable of self-oscillation effects Custom Maxon MC4107D Bucket Brigade IC’s Stereo (wet/dry) outputs True Bypass Switching