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Electronic Audio Experiments Surveyor Preamp Pedal

£249.00

Founded in 2015 and hailing from Boston, Massachusetts, Electronic Audio Experiments are more than just a pedal manufacturer, they are "an exploration in sound and texture via electronics". The Electronic Audio Experiments Surveyor is a compact re-interpretation of the Instrument Voicing Preamp (aka IVP), a cult classic and long discontinued rackmount preamp. Featuring a unique, transformer […]

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Description

Founded in 2015 and hailing from Boston, Massachusetts, Electronic Audio Experiments are more than just a pedal manufacturer, they are "an exploration in sound and texture via electronics". The Electronic Audio Experiments Surveyor is a compact re-interpretation of the Instrument Voicing Preamp (aka IVP), a cult classic and long discontinued rackmount preamp.

Featuring a unique, transformer based “Tube Voice” distortion generator, the Surveyor is highly responsive to the frequency content of the input signal. A two-band Baxandall EQ is placed before the distortion which is actually the complete opposite to how most drive pedals work. It may seem unorthodox, but by using this method, the gain can be selectively applied to a specific frequency band. This is incredibly useful is you want to boost the treble for that signature clangy sound or boost the bass for a fuzz overload!

Controls 

  • Level – Overall volume, with more than enough range for line level output or to overdrive a tube amplifier
  • Gain – Amount of overdrive/saturation equally applied to all frequencies; highly interactive with the Bass and Treble settings
  • Bass – Pre-gain low shelf boost/cut, +/-12dB @ 100Hz
  • Treble – Pre-gain high shelf boost/cut, +/-12dB @ 3KHz
  • Hi/Lo (switch) – Sets the range of the gain control. In the Lo setting the gain range is -15dB to +12dB, in the Hi setting the gain range is +9dB to +36dB. 

Specifications: 

  • Bypass: Relay switching with true bypass
  • Input impedance @ 1 Khz: 500kΩ
  • Output impedance @ 1 Khz: 2kΩ
  • Power: 9V DC, 2.1 mm center negative barrel. The current draw is 75 mA.
  • We recommend a regulated, isolated power supply rated for 100 mA minimum. The PSU input is protected against reverse polarity and over-voltage up to 24V. Our pedals do not accept batteries.  

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Brand

Electronic

Category

Electronic

Tags

Preamp

A preamp pedal shapes and boosts your guitar’s signal before it reaches your amp or recording interface, giving you control over tone, gain, and headroom. It acts as the first stage of amplification, adding warmth, clarity, and character while preparing your signal for the next part of the chain. Some preamps emulate the response of classic valve circuits, while others offer clean, transparent tone shaping ideal for acoustic instruments or direct recording setups.

Used on its own, a preamp pedal can serve as the foundation of your tone, providing a consistent core sound wherever you play. When combined with other effects, it enhances dynamics and helps each pedal sound more defined and natural. Whether you’re looking to push your amp harder, bring life to a dull signal, or refine your sound for the studio, a good preamp pedal adds presence, punch, and musicality to any rig.

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