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The New Nylgut® is the first product developed and patented by Aquila.

The New Nylgut® is nor common Nylon or Carbon (Fluocarbon fishing line or PVDF), or a mix of them. It is a plastic compound of three different components

Compared to Nylon, the New Nylgut® produces a better sound and stays in tune better, this because the moisture absorption is less of .1% against the 2.0% of Nylon normally employed for the musical strings (i.e. Du Pont Tynex® polyammide 6-12).

Due to the higher density, similar to that of pure gut (1.30 gr/cm3), the New Nylgut® produces a better sound than Nylon and it is not so metallic like those of the so- called ‘Carbon’ (Fluorocarbon) PVDF strings.

In other words, the New Nylgut® is probably the first genuine syntetic gut in the world.


The New Nylgut® assures:

1) a better sound than Nylon or PVDF, similar to the genuine gut strings

2) a more accurated fret-intonation due to the well gauged material

3) a very stable intonation under moisture changes

Colour: white

To learn more: www.geocities.co.jp/HeartLand-Himawari/9169/genkonjaku3_E.html





We can define Silkgut® like a cousin of the New Nylgut®. The difference between New Nylgut® and Silkgut® is that the Silkgut® is a bit stiffer than New Nylgut®. In other therms it last longer under the finger nails of guitar- players. Silkgut® is suitable for classical guitar Trebles and modern Harp's strings.

Colour: silked.





Bionylon® is a musical polyamide developed recently by us and extruded at our headquarter.

It is  a  100%  a natural plant's derivate (castor oil). This assure less of 50%  carbon dioxide emission during the production .

The moisture absorption is very low, comparable to those of PA 6-12 (the common classical guitar’s Nylon). The performances are excellents.

We recommend Bionylon® strings for all plucked instruments such as classical guitars and ukuleles.

Colour: natural pearl (or custom -made colours)

Bionylon® strings are the first eco-friendly musical strings in the world!






Thundergut® is a special very elastic and dense material developed by us in our headquarter that assure superior performances over the common polyuretane and silicon rubber bass strings available in the market. Thundergut® assure fast and stable intonation; no sweet finger's slip on the strings.

Color: white



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