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PUMPER-072 - High-Headroom Full-Range Booster

The PUMPER uses a TL072 op-amp at its heart, plus internally voltage doubling “charge pump” circuitry to create a high headroom, full range clean boost with no tonal colouration.

So it simply, and wonderfully, makes your signal louder and LOUDER and LOUDER! 

The single “PUMP” control increases the signal level from unity to over 25dB of boost without changing you core tone.

So the PUMPER works really well after your drive and tone shaping pedals as a master volume boost, but also before driven pedals and amps to push them harder into more saturation, gain and overdrive.

When engaged, the PUMPER also acts as a buffer/line-driver.

This means it will run long cable lengths without any loss of tonal clarity and signal strength.

PUMP = Boost level / amplifier gain.

ON = True bypass footswitch with ON status indicate by lit white LED.

IN = 6.35mm (1/4”) mono jack cable input.

OUT = 6.35mm (1/4”) mono jack cable output.

9V = 9V DC 2.1mm centre negative power supply input.

The current draw of the PUMPER-072 is less than 10mA.

I recommend using a good quality regulated 9V DC power supply.


The NRG Effects Monochrome Series is a range of mini sized pedals, all handmade and hand-wired using premium quality components by Neil R. Grimes in Eastbourne, England.

Don't be fooled by the size; these clean and concise little pedals are all big on tone, surprisingly versatile and very musically inspiring.

Different models in the range will released and handmade to order in small batches. So numbers and availability will be limited.


CONTACT for further information or custom requests.