These tops represent a small, hand-selected group sourced annually in Europe by Bryan Galloup. Each piece is chosen from a limited yield, based on strict evaluation standards and measurable acoustic performance.
Every top is evaluated using stiffness-to-weight, density, and frequency analysis, utilizing methods associated with the Acousonix Frequency Hammer and the Acousonix Calculator. Selection is based on how the material responds as a soundboard, not visual appearance alone.
These are among the highest-grade and most selectively sourced tops available, representing material that meets a narrow range of acoustic criteria.
The top is the primary driver of an instrument’s voice, and differences in physical properties directly influence tonal outcome.
All pieces are one-of-one and sold as pictured.
Each listing represents a unique top. These premium-rated tops are sold individually.
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Moon Spruce Top #00016 – Rating 9.8
$395.00 -
Moon Spruce Top #00022 – Rating 9.9
$405.00 -
Moon Spruce Top #00024 – Rating 9.8
$395.00 -
Moon Spruce Top #00025 – Rating 9.5
$365.00 -
Moon Spruce Top #00027 – Rating 10.1
$425.00 -
Moon Spruce Top #00030 – Rating 10
$415.00 -
Moon Spruce Top #00031 – Rating 9.6
$375.00







