Yamamoto Sound Craft
PB-21 Ebony spike base Female

The PB-20 and PB-21 setting bases are designed for amplifiers and speakers and can be used individually or in combination with each other. The material used is African Black Wood, one of the hardest and strongest of all woods. This material is now rare, but is actually used for oboes and clarinets, and has a reputation for its excellent resonance.

The moderate spike bite produces a clear and tight sound.

PB-20 is pin-shaped and can be placed directly under amplifiers and speakers as a point support. PB-21 is concave and can be placed under the pins of speakers or amplifiers with spike pins to be used as a supporting base. PB-20 and PB-21 can also be combined to form a top and bottom structure to be used under amplifiers and other equipment to support audio equipment at three or four points by flattening both top and bottom surfaces.


Metal is usually used for these pinpoint bases, but metal spikes often produce resonance noise peculiar to metal. In particular, when a metal spike pin is supported by a metal plate, it is easy for resonance sound to be generated.

Dimensions	41mm(D) x 14mm(H)
Depth of recess	3.5mm