The PS-2 was the first pitch shifter made by Boss and one of the first pedals with dual boards. It works both as a pitch shifter and a digital delay and it is perhaps surprising that it doesn't use the same chip as the DD-3 and DSD-3. Pitch shifting is limited to one octave up or down while maximum delay time is 2 seconds.

The earliest PS-2s suffered from high frequency noise. This was alleviated from serial number 845800 but earlier units can be modified to the later specification by changing 3 capacitors.Production was moved from Japan to Taiwan early 1992.

The PS-2 has a total of 6 different modes

• Up to 125 ms delay
• Up to 500 ms delay
• Up to 2 seconds delay
• Set pitch shift manually
• +1 octave
• -1 octave

Specifications

• Controls: Balance (between effect in direct signal), Feedback (for amount of repeats, and very unique pitch shifting effects), Fine-Manual (for adjusting delay times and pitch) and Mode (for selecting any of the 6 modes).
• Connectors: Input, Output, Tuner Out (for plugging into a tuner), AC Adaptor
• Current Draw: 60 mA (DC 9V)
• Weight: 460g/1.01 lbs.
• Input Impedance: 1Mohm
• Residual Noise Level: -90dBm (IHF-A)
• Recommended Load Impedance: 10kOhm or greater
• Delay Time: 30ms to 2000ms
• Frequency Response: 10Hz to 30kHz, +1/-3dB (Direct)
• Recommended AC Adaptor: PSA Series

Labels

• Blue - Made In Japan
• Blue - Made In Taiwan