The Yamaha CPX900 electro acoustic guitar features a wider profile than Yamaha's APX series, 95-115mm compared to the APX's 80-90mm, for a guitar with enough body volume for excellent acoustic resonance. The CPX900 is slightly smaller and more comfortable to handle than a jumbo, but features a large soundbox and robust sound. Other features of the CPX900 are solid spruce top with laminated flamed maple back and sides, striped ebony bridge and fingerboard with pearl/abalone diamond markers with a double chevron flash at the octave, gold plated tuners, and double abalone ring soundhole rosette. The CPX900 uses the 3-way EQ and on-board tuner on the Yamaha System 57 preamp which uses Yamaha's ART Acoustic Resonance Tranducer for rich and natural tones and dramatic reduction in feedback.

Yamaha's ART gold control panel 3-way Acoustic Resonance Tranducer found on the CPX900 uses three piezo contact transducers, a dual piece under the saddle, a second contact pickup on the bass side, and a third on the treble side. The CPX900 bracing has be modified to allow optimum pickup placement, to capture the sound's bass and treble components, as well as the vibrations of the entire length of strings and body.

Unlike convention piezo pickups, the ART Acoustic Resonance Transducer on the Yamaha CPX900 uses multiple layers of different damping materials between the under side of the guitar's topboard and the piezo crystal to dampen excessive vibrations which can cause distortion. The peizo remains responsive to small resonances, and achieves ideal sensitivity and dynamics for a natural acoustic tone even when amplified.

Features

Top: Solid Spruce.
Back and Sides: Flame Maple.
Neck: Nato.
Fingerboard: Ebony.
Bridge: Ebony.
Body Depth: 95-115mm (3 3/4"-4 1/2").
String Scale: 650mm (25 9/16").
Nut: Urea.
Nut Width: 43mm.
Tuning Machines: Die-cast Gold TM-29G.
Pickup System: 3-Way Contact Pickups with dual underbridge contact sensors plus additional high frequency and low frequency sensors.
Electronics: System 57 3-Way Gold System with Onboard Tuner, 3-Band EQ.
Sound Hole Inlay: White and Black, Abalone.
Fingerboard Binding: Ivory.
Body Binding: Ivory and Black.
Head Binding: Ivory.
Bottom Inlay: Maple.
Yamaha Logo on Headstock: Mother Of Pearl.
Head Point: Mother Of Pearl and Abalone Compass.
Position Markers: Mother Of Pearl and Abalone.
Pickguard: Clear.
Finish: Hi-Gloss.