Most acoustic guitar pickups are fitted using endpin jack sockets, which take a standard 1/2" jack. Thank goodness the days of guitars with holes drilled in the sides of a guitar for an ordinary jack socket are (mostly) gone! The high quality Switchcraft units used by K & K, L.R. Baggs and the like are extremely reliable. The only drawback is that they do need a 1/2" diameter hole through the end block. Most acoustic guitars use a tapered endpin, which has to be removed and the hole reamed out.
For anyone who doesn't want to modify their guitar, the Vintage Jack is
the only choice. A Vintage Jack is available to fit most guitars,
mandolins, and similar instruments equipped with taper fit end pins.
(Note that the mandolin uses a traditional Gibson A-style or F-style
taper which is different to the Martin-style taper on the guitar
versions - mandolin styles are available to special order.) Vintage Jacks are precision machined in Colorado, using the
best quality components.
Vintage Jacks are available in a wide range of materials. Standard
models are available in Brass and Stainless Steel. They are also
available in a range of exotic woods or materials to match the guitar or
mandolin - we usually stock Ebony, Snakewood, and Synthetic Ivory.
Vintage Jacks use a heavy duty Switchcraft 3.5mm jack socket. They can be wired in a number of configurations - mono for
a single pickup, stereo for hybrid systems, plus they can be used to
switch on a battery for use with an onboard active system. Instructions
included.
Vintage Jacks are
also supplied with a 3.5mm heavy duty Switchcraft jack plug, which can be used to make up a suitable lead. (Alternatively we sell the Vintage Jack Cable Adaptor, which converts from 3.5mm to 1/4" jack.)
This is an ebony version, which is a good match for guitars with ebony fingerboards or bridges.