Eastman Mandolin Build Overview

The Eastman MDO605-GB Octave Mandolin is a unique and versatile instrument that expands the voice of the mandolin family into a deeper, more resonant tonal range. Tuned in fifths (G–D–A–E) one octave below a standard mandolin, it offers a rich, full-bodied sound that bridges the gap between mandolin and guitar.

Featuring a solid spruce top paired with solid maple back and sides, the MDO605 delivers a clear, articulate response with strong projection and warmth. The A-style body with S-holes enhances focus and definition, making it well-suited for ensemble playing, accompaniment, and melodic work.

With its 21" scale length and paired string courses, the octave mandolin provides a familiar yet expanded playing experience—especially appealing to guitarists looking to explore new tonal textures. Equipped with a K&K Duotone pickup system, this instrument transitions seamlessly from acoustic settings to amplified performance while preserving its natural character.

Why the MDO605 Stands Out

The octave mandolin offers a distinctive tonal range and feel, making it a powerful addition for players seeking depth, versatility, and a fresh sonic palette.

Octave tuning delivers a deeper, fuller voice than a standard mandolin
Spruce top provides clarity, responsiveness, and dynamic range
Maple back and sides enhance projection and articulation
A-style body with S-holes focuses tone and improves note definition
K&K pickup allows natural amplified performance

Features & Specifications

Top: Solid Spruce
Back & Sides: Solid Maple
Body Style: A-Style with S-Holes
Neck: 3-Piece Maple / Mahogany / Maple
Fingerboard: Ebony, 12" Radius
Scale Length: 21"
Nut Width: 1 3/8" Bone
Bridge: Ebony
Tailpiece: Eastman Cast Aluminum
Binding: Top and Back
Inlays: Pearl Headstock
Tuners: Pingwell RM-11583N-26A
Electronics: K&K Mandolin Duotone
Finish: Gloss (Goldburst)
Pickguard: Ebony
Strings: D'Addario XT Phosphor Bronze
Case: Hardshell Case Included

Serving Musicians Since 1991

Limited Lifetime Warranty: This EASTMAN handcrafted instrument is warranted to be free from defects in materials. If at any time your instrument malfunctions as a result of faulty materials, workmanship or electronic components, EASTMAN will repair the defect(s) or replace the instrument, as it deems appropriate at its sole discretion. This warranty is extended to the original retail purchaser only and may not be transferred or assigned to subsequent owners.