If You mean Yamaha SLB300 Silent Bass,
IT is an electric double bass (or better, an Electric Upright Bass, EUB).
I do not own
IT, I own another EUB, I use
IT for practice.
Sound is similar to the acoustic db, of course with an amplifier;
IT is the same size and has the same strings, so from fingering point of view I find
IT very useful, and
IT is easier to handle, transport and so on.
But sound of the real double bass is warmer and more elegant.
Io uso: solo le dita
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Non c'è nulla di più pratico di una buona teoria. (Richard Phillips Feynman, Premio Nobel per la Fisica)
Elementi di Acustica delle Basse Frequenze - Volume I