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Average Price: $924

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$200

$601+

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Description

The Sigma Standard Series SDR-28 is a remarkable example of quality craftsmanship in the world of steel-string acoustic guitars. Known for its rich tonal quality, this guitar is a favorite among both seasoned musicians and those new to the acoustic scene. The SDR-28 features a solid Sitka spruce top, which is prized for its ability to deliver clear and powerful sound projection. Paired with rosewood back and sides, the guitar provides a balanced and warm tonal range, making it versatile for various music styles.

Sigma's attention to detail is evident in the SDR-28's construction and aesthetics. The dovetail neck joint ensures stability and resonance, while the mahogany neck offers a comfortable grip and smooth playability. Aesthetically, the guitar boasts a classic look with its tortoise pickguard and elegant binding, appealing to players who appreciate timeless design.

The SDR-28 is equipped with a bone nut and saddle, enhancing its tonal clarity and sustain. Additionally, the Grover die-cast tuners provide reliable tuning stability, ensuring your performance remains uninterrupted. This guitar is an ideal choice for those seeking an instrument that seamlessly blends traditional design with modern playability.

Key Features:

  • Solid Sitka spruce top for excellent sound projection
  • Rosewood back and sides for a balanced tonal range
  • Mahogany neck with dovetail joint for enhanced playability
  • Bone nut and saddle for improved sustain
  • Grover die-cast tuners for reliable tuning stability
  • Tortoise pickguard and elegant binding for classic aesthetics

Product specs

Brand Sigma
Model Standard Series SDR-28
Year 2010s
Active Preamp No
Back Material Rosewood
Body Shape Dreadnought
Color Family Natural, Tan
Fretboard Material Ebony
Neck Material Mahogany
Number of Frets 20
Number of Strings 6-String
Offset Body Non-Offset Body
Pickup None
Right / Left Handed Right Handed
Sides Material Rosewood
String Type Steel
Top Material Spruce

FAQs

What is the body shape of the Sigma Standard Series SDR-28?

The Sigma Standard Series SDR-28 features a dreadnought body shape, which is known for its large size and powerful, resonant sound, making it ideal for a wide range of musical styles.

What materials are used in the construction of the Sigma SDR-28?

The Sigma SDR-28 is constructed with a spruce top and rosewood back and sides, offering a balanced tone with rich lows and clear highs, while the mahogany neck and ebony fretboard provide durability and smooth playability.

Does the Sigma SDR-28 come with any built-in electronics?

No, the Sigma SDR-28 does not have any built-in electronics or pickups, making it a purely acoustic guitar designed for traditional playing and sound projection.

How many frets does the Sigma SDR-28 have?

The Sigma SDR-28 comes with 20 frets, allowing for a wide range of notes and chords, suitable for both rhythm and lead playing.

Is the Sigma SDR-28 suitable for fingerstyle playing?

Yes, the Sigma SDR-28's dreadnought body and tonewoods offer a balanced sound that can accommodate fingerstyle playing, providing clarity and resonance across the strings.

Guitar Gallery

Guitar Gallery

Sigma SDR-28

Video thumbnail for Sigma SDR-28 by Guitar Gallery

Sigma SDR-28

Guitar Gallery

Guitar Gallery

Video thumbnail for Sigma by Martin SDR-28 by Brian’s Unique Guitars

Sigma by Martin SDR-28

Brian’s Unique Guitars

Brian’s Unique Guitars

Video thumbnail for [시그마 SDR-28] SIGMA SDR 28 sound sample / 100만원 초반 올솔리드 기타 by 어그먼트기타

[시그마 SDR-28] SIGMA SDR 28 sound sample / 100만원 초반 올솔리드 기타

어그먼트기타

어그먼트기타

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Sigma Standard Series SDR-28.

Comparisons

  • The Sigma SDR-28 C is perceived by some owners to have a louder volume than a Martin D-18, though the latter may have a superior tone.

    Source
  • Some owners find the Sigma SDR-28 to have a wider tonal range and more punchy tone compared to Martin guitars, which they describe as slightly muffled.

    Source

Mods and upgrades

  • Owners have successfully added brass bridge pins and a Tusq nut to improve sound quality, suggesting these as viable upgrades.

    Source

Value and pricing

  • A Sigma SDR-28 C was purchased for $175 with a Gibson hard case, highlighting its value compared to similar models.

    Source

User experience

  • An owner mentioned that their Sigma SDR-28 C needed only one setup in 25 years, indicating long-term reliability.

    Source
  • A late 80s Sigma SDR-28 is praised for its astonishing sound quality, suggesting longevity in tonal performance.

    Source

Build quality

  • It's noted that the "C" designation may indicate a cosmetic blemish, which can significantly reduce the instrument's original price.

    Source
  • Owners note the Sigma has a distinct, punchy tone that can transition quickly from low to high notes, enhancing its dynamic range.

    Source

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