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Cornerstone Nucleo Power Station Reactor Hall Reverb
Illustration, not a photograph. Details may differ from the real product.
Cornerstone

Cornerstone Nucleo Power Station Reactor Hall Reverb

Reverb
List price
$449
Key facts
TypeReverb pedal1
MakerCornerstone, Paul Davids Signature1
ModesRoom (lo-fi), Reactor (vintage), Hall (normal)1
FootswitchesBypass (save) and Freeze (preset 1-3)1
RecognitionGOLD, 2025 Best New Delay and Reverb Pedals of the Year (Guitar Pedal X)1

The Cornerstone Nucleo Power Station Reactor Hall Reverb is a reverb pedal from Cornerstone, designed as a signature pedal with guitarist and YouTube creator Paul Davids. It offers three reverb characters on a mode selector, along with preset and freeze footswitches, and it picked up a GOLD award in Guitar Pedal X's 2025 Best New Delay and Reverb Pedals of the Year roundup.1

What it does

The pedal's mode selector covers three reverb types: Room, described as lo-fi; Reactor, described as vintage; and Hall, described as normal.1 The two footswitches do more than turn the effect on and off: the bypass footswitch also saves settings, and the freeze footswitch calls up presets 1 to 3.1

The Nucleo is a Paul Davids signature design, sold as the Cornerstone Nucleo Power Station Reactor Hall Reverb. It carries a Mode selector offering Room [lo-fi], Reactor [vintage] and Hall [normal] modes, plus a Bypass Footswitch with save and a Freeze Footswitch for presets 1 to 3.1

Guitar Pedal X listed the pedal at $449 USD.1

What reviewers said

Guitar Pedal X's Stefan Karlsson awarded the pedal GOLD in a 26-pedal category roundup for 2025, and his verdict was emphatic:

"A truly perfect pedal in every area - Design, Features, Form and Function."
Stefan Karlsson, Guitar Pedal X1

Guitar Pedal X gave the Nucleo a GOLD award in its 2025 Best New Delay and Reverb Pedals of the Year roundup, with the reviewer's verdict that it was "A truly perfect pedal in every area - Design, Features, Form and Function."1

Guitar Pedal X's reviewer found huge playability and versatility across the slider modes overall, summing the pedal up as "A truly perfect pedal in every area - Design, Features, Form and Function."1

Videos

Cornerstone Music Gear - Nucleo Reverb I NAMM 2026
Premier Guitar
Cornerstone NUCLEO - Deep Dive
Cornerstone Music Gear
Nucleo CLOSE UP - Fader & Voicing
Cornerstone Music Gear

Questions

What are the three modes on the Cornerstone Nucleo Power Station Reactor Hall Reverb?

The mode selector offers Room, described by Guitar Pedal X as lo-fi; Reactor, described as vintage; and Hall, described as normal. Switching between them changes the character of the reverb, and Guitar Pedal X's reviewer found the pedal offered huge playability and versatility across the slider modes.

Who is the Cornerstone Nucleo reverb a signature pedal for?

It is a Paul Davids signature pedal, designed with the Dutch guitarist and YouTube creator. Guitar Pedal X lists it as the Cornerstone Paul Davids Signature Nucleo Power Station Reactor Hall Reverb, and it won GOLD in the site's 2025 Best New Delay and Reverb Pedals of the Year roundup.

Sources (1)
  1. Guitar Pedal X, Guitar Pedal X, 2025-12-10

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