This project is carried out in response to the Gifu Prefecture Regional Revitalization Fund project cost.
Pick up devices are conventionally placed under the saddle (Under Saddle Pick Up (USPU)). The SMPU system however creates a totally different sound by placing it on the surface of the guitar body to reproduce the genuine natural sound when plugged in.
By placing a piezoelectric pickup device on the bridge of a guitar instead of under the saddle, it creates an electronically reproduced sound that is very close to the natural sound, as the vibrations from plucking the strings are transmitted by air.
Because a conventional pickup is placed under the saddle and enclosed inside the bridge, the reproduced sound is affected by the strings’ vibration and echoes inside the body of the guitar. As with the USPU, the SMPU uses the tension of the strings to fix the pickup device, however, as it is attached to the surface, it mainly picks up the sound character the guitar creates outside the body. Also there is only a minimal time lag between the natural sound and the reproduced sound.
You can’t avoid adjusting the saddle, so simply changing strings can cause a contact failure within USPU devices. This problem rarely occurs with the SMPU system.
Conventional pickup devices are placed under one saddle (sometimes divided into two pieces) so that the 6 strings are touching 6 pickup elements separately. This causes the saddle to be pulled forward by the tension of the strings, making the supporting surface less stable and results in a poorer quality of reproduced sounds. The SMPU system allows it to gain a good volume balance corresponding to each string, and replicates the sound of an acoustic guitar.
Acoustic electric guitars appeared on the scene and became well-known, thanks to the ceramic pickup device placed under the saddle and inside the bridge.
Since then, speaking of sound quality, sticking-type piezoelectric pickup devices have been the only method to use the device outside of the bridge and no other method seems to have been introduced.
Weʼd like to introduce this Acoustic Sound Enhancer, the SMPU system, as an achievement of our career and hear the input of the market.