instruments. Today, the Malaysia Blackwood has established it position firmly at the level of premium tonewoods in the musical instruments making industry. Monkeypod Wood (Samanea saman or Rain Tree) - Formally known as Albizia saman and previously only used for aesthetic purposes, monkeypod was pioneered as a tonewood by Jeffrey Yong and has recently been applied by other luthiers such as Bamburg guitars. - Up to 99% of this guitar was built using hardwoods. Its presence at the 2006 GAL convention was evidently heard and felt during an acoustic guitar blind-test listening session. This non-conventional built has triumphed over the other acoustic guitars in the session. The tonal characteristic was unique and impressionable to everyone who was present. Eventually the audience has unanimously regarded the Monkeypod guitar as the one that possessed the most desired tonal characteristics. - While using Monkeypod wood to build guitar is not new but it has never been regarded as a premium tonewood in the musical instruments making industry. The showdown in 2006's GAL convention has certainly illuminated its profile. The popularity of this unique wood has been never stopped growing since. Guitar Models All instruments built in Jeffrey's workshop are made by hand excluding the regular hardware and electronic parts that are pre-purchased and installed. Jeffrey's guitars are made with 99 percent local woods, the remaining 1 percent accounts for the maple veneer used in the bindings. Monkeypod wood is used as a standard for all Jeffrey Yong guitars. The braces designs and layout are influenced by the Martin's X-scalloped braces patterns, Torres Fan bracing and the Smallman Lattice bracing. Steel String Guitars JJ (Jeffrey Jumbo) Guitar Body shape is a cross between a Jumbo and a Classical Guitar. OM Guitar Seismic Guitar 10-String Acoustic Guitar. Presented it in Montreal Guitar Show in 2011. Influenced by the tragic March 2011 earthquake in Japan. Body - Monkeypod Fretboard and bridge - Blackwood Headstock - half-slotted, half-pegged design Soundhole, back, and bottom strap button are appointed unevenly representative of a seismic shift. To get a chimey sound, its D and G strings have octave pairs, and the B and high E have unison strings. Classical Guitars Tioman I (Nylon String) Torres bracing and body design Tioman II (Nylon String) Torres body shape with modified lattice bracing Tioman III (Nylon String) Khono design body shape (larger body) with modified lattice bracing JJ (Jeffrey Jumbo) The JJ is