Seymour Duncan PowerStage 100 Stereo Guitar Power Amp
The Seymour Duncan PowerStage 100s provides features demanded by the modern guitarist. Deliver your sound to the masses in a package small enough to fit on your pedalboard.
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The Seymour Duncan PowerStage 100 Stereo. This line of compact power amps provides high-headroom class-D amplification to guitarists looking to deliver the sound of their preamp, pedal chain, or amp modeler to the masses. The PowerStage 100S provides features demanded by the modern guitarist, including stereo inputs and outputs that each drive 100 watts of transparent sound to your cabinets. Perfect for amplifying the sound of modern modeling units to on-stage cabinets, the PS100S also offers an extended EQ section and balanced line outs with switchable analog cabinet simulation for more authentic projection through any sound system. The stereo sounds developed in your amp modeler, multi effects-unit, or preamp will be delivered with clarity through any pair of speakers, all in a package small enough to fit on your pedalboard.
Seymour Duncan PowerStage 100 Stereo Guitar Power Amp Features
Level Control - controls the overall loudness of the amplifier.
Bass Control - provides 13.2dB of boost or cut at 74Hz, Q - 1.1.
Low-Midrange Control - provides 13.SdB of boost or cut at 389Hz, Q - 0.77.
Hi-Midrange Control - provides 13.SdB of boost or cut at 1.SSkHz, Q - 0.82.
Treble Control - provides 13.6dB of boost or cut at 4.6kHz, Q - 0.71.
Presence Control - provides 13.6dB of boost or cut at 11.0kHz, Q - 0.66.
Cabinet Simulation push-button - low position engages the cabinet simulation to the balanced line output. High position bypasses cabinet simulation.
EQ push-button - low position engages the EQ controls for the balanced line output. High position bypasses the EQ controls for the balanced line output.
This amplifier has several features designed protect it under worst case conditions. (POWER AMP CLIP /OVER-CURRENT /OVER-TEMPERATURE INDICATOR) This LED serves multiple purposes, indicating the following: Power Amp voltage clipping, Power Amp current limiting, Power Amp over-temperature warning
Power Amp Clip/Over-Current Indicator - this is a dual-purpose indicator. The primary function is to warn when the power amp is 1dB away from clipping. The secondary function is to indicate when an over-current condition exists on the speaker output jack, such as a shorted speaker cable
Pre-Amp Clip/Status Indicator - this is also a dual-purpose indicator. The primary function is to indicate when any portion of the preamp is within 6dB of clipping. See more information under "Preparing for use". The secondary function is to indicate the status of the power supply/power amp module.
Power Amp EQ On/Off - low position engages the EQ controls for the speaker outputs. High position bypasses the EQ controls. Adjust after setting the overall loudness with the Level control.
Power Switch - turns mains power to the internal circuitry on and off
OVER TEMPERATURE PROTECTION: The over-temperature circuit monitors the temperature in the output stage and power supply. As the temperature in either approaches 125°C, the Pwr Amp Clip/O.C. indicator will light continuously. When the temperature reaches 150°C, the amplifier will shut down until the temperature drops below 120°C, at which point it will reset.
Maximum Output Power 4Q load - 120W@ 1%THD+N, 1kHz
Maximum Output Power 4Q load - 150W@ 10%THD+N, 1kHz
Maximum Output Power 8Q load - 60W@ 1%THD+N, 1kHz
Continuous Output Power without thermal shutdown: @120VAC/60Hz - 115W, @230VAC/50Hz - 115W
Nominal Mains voltage: 100 to 240 VAC, 50/60 Hz
Total Power efficiency: Po = 2 x 100W - 72%
SNR, Balanced Line Out: 97.6dB
SNR, Speaker Out: 89.SdB
Bandwidth: 15 Hz to 22 kHz± 3 dB, 20 Hz to 20kHz@ nominal power
Rear Panel: Input Jack (1/4" mono x2), Balanced Line Output (Male XLR, output intended to drive the input of a mixing board), Speaker Output Jack (Dual 1/4" mono)
Maximum Output Power 4Q load - 120W@ 1%THD+N, 1kHz
Maximum Output Power 4Q load - 150W@ 10%THD+N, 1kHz
Maximum Output Power 8Q load - 60W@ 1%THD+N, 1kHz
Continuous Output Power without thermal shutdown: @120VAC/60Hz - 115W, @230VAC/50Hz - 115W
Nominal Mains voltage: 100 to 240 VAC, 50/60 Hz
Total Power efficiency: Po = 2 x 100W - 72%
SNR, Balanced Line Out: 97.6dB
SNR, Speaker Out: 89.SdB
Bandwidth: 15 Hz to 22 kHz± 3 dB, 20 Hz to 20kHz@ nominal power
Rear Panel: Input Jack (1/4" mono x2), Balanced Line Output (Male XLR, output intended to drive the input of a mixing board), Speaker Output Jack (Dual 1/4" mono)
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Skannes 🇺🇸
Verified Buyer
Power punch
This is a lot of power in a pedal. Jus plugged in my Tonex pedal into this power amp and it brought my whole pedal to a whole new level!
Published date
03/29/24
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Questions & Answers
2 answered questions
Ron
Verified User
Q: What are the dimensions of the unit?
Answers on Content by By AMS Customer Service on Sun Mar 01 2026
A: ~9" D x 7" W x 4" H
By AMS Customer Service
03/01/26
willie
Verified User
Q: can you use 16ohm speakers with this unit
Answers on Content by By AMS Customer Service on Thu Oct 09 2025
A: Yes! You can use it with speakers that are 4-16 ohms
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