About


GregoryPreAmps is the result of combining two passions: music and electronics.


Greetings! My name is Grzegorz Sebastian Kościk, and I am the founder and chief designer at GregoryPreAmps. My journey with music and electronics began in the early 90s when I started playing guitar and bass, simultaneously developing my interests in the field of electronics. The passion for both of these areas inspired me to further educate myself in electronics, allowing me to acquire the necessary knowledge for designing more advanced audio electronic circuits.

In 2005, I started working at the renowned company Mayones, known for producing guitars and basses, where I worked as an electronics assembler. Already in 2006, I created the first prototype of a bass preamp, the M-BP3 model. Its reliability and exceptional quality quickly gained recognition among many well-known musicians, such as Hadrien Feraud and Federico Malaman. Throughout my years of collaboration with Mayones, which lasted until 2021, I continuously developed and improved projects related to bass and guitar preamps. My musical ear became the key to choosing the right direction in building preamp prototypes, allowing for precise tuning of the sound to meet the needs of musicians.

After leaving Mayones, I devoted myself entirely to developing my own brand, GregoryPreAmps. Currently, I focus on creating new, innovative projects from the G-BP3 series, which not only continue the previous standards of high quality and reliability but also elevate the sound quality to an even higher level.

All our preamps are made from the highest quality components. We select only low-noise semiconductor devices and foil capacitors to ensure the cleanest possible sound. We also use an innovative EQ filter design that enables achieving a clear and transparent sound regardless of filter adjustments. Additionally, we employ a mixed assembly of THT and SMD, utilizing the best of both technologies. The entire production process, from mounting THT and SMD electronic components, through wiring, testing (including on an oscilloscope), to hermetic sealing with a special compound, takes place in our company. This allows us to have full control over the quality of each stage of production.

Our primary goal is to deliver the highest quality sound that meets the expectations of even the most demanding musicians. GregoryPreAmps is not just about products – it's also about passion, experience, and a relentless pursuit of perfection.

 

Headphone Amplifier for Cali.

In 2017, I designed and installed my headphone amplifier in the Mayones Cali bass guitar, which offered studio-quality sound. The amplifier design was based on fully symmetrical power supply and utilized top-grade semiconductors. Due to the short scale length of the instrument, which hindered obtaining full low-end tones, I designed a special notch filter to accentuate both low and high frequencies. The end result proved to be excellent! The Cali bass was equipped with a 3.5mm headphone jack and a preamp output for a 1/4" jack. One of the exceptional clients was Sting, ordering the Cali bass from Mayones.
 

Production for Mayones

The preamps I produced for Mayones from 2006 to 2021 are models of my own design: M-BP3, M-BP2, M-PB1, M-P1, M-Gain.