The SIGMA TM-12 is a robust and reliable machine that takes your production to the next level with its automated process and advanced features.



The SIGMA TM-12 acoustic guitar is a great addition to any musician’s collection. This mid-range guitar has an affordable price tag but still boasts high-quality construction and sound.

The TM-12 features a solid Sitka spruce top, which is known for its bright and clear tone. The back and sides are made of laminated mahogany, which adds warmth and depth to the sound. The guitar has a dreadnought body shape, which is the most popular acoustic guitar shape and provides a full and balanced sound.

The neck is made of mahogany and has a slim profile, making it comfortable to play for extended periods of time. The fretboard is made of rosewood and has a 25.4-inch scale length, with 20 frets and dot inlays.

The TM-12 also features a bone nut and saddle, which helps to improve the sustain and tuning stability of the guitar. The tuning machines are chrome-plated and geared, allowing for precise tuning adjustments.

One of the standout features of the TM-12 is its Fishman Isys+ electronics system. This system includes a built-in tuner and EQ controls, as well as a phase switch for reducing feedback during live performances. The pickup also accurately captures the natural sound of the guitar, making it a great option for recording.

Overall, the SIGMA TM-12 acoustic guitar is an excellent choice for beginners and intermediate players alike. It offers a great balance of affordability and quality, with solid construction and great sound. The addition of the Fishman Isys+ electronics also makes it a versatile option for live performances and recording.

SIGMA TM-12 properties

Product name SIGMA TM-12
Type Acoustic Guitars
Number of Strings 6 pcs
String Type Steel
Built-In Microphone No
Handedness Right-Handed
Number of Frets 20
Cutaway No Cutaway
Size 4/4
Pick Guard No
Wood Type (front) Spruce
Wood Type (back) Mahogany
Wood Type (body sides) Mahogany
Wood Type (neck) Mahogany
Colour Brown

Additional information


Product type

Number of Strings

String Type

Built-in Microphone


Number of Frets



Pick Guard

Wood Type-front

Wood Type-back

Wood Type-body sides

Wood Type-neck


1 review for SIGMA TM-12

  1. Jeffrey Cherry

    As someone who has been playing guitar for a few years now, I recently purchased the SIGMA TM-12 acoustic guitar. Unfortunately, I must say that my experience with this instrument has been less than satisfactory, hence the 2-star rating.

    Firstly, the steel string type of this guitar is extremely tough on the fingers. I found it much more difficult to play than other guitars I’ve owned in the past. It could be due to my lack of experience with steel strings, but it was disappointing to not be able to play as comfortably as I had hoped.

    Secondly, the SIGMA TM-12 is designed for right-handed players only. As a left-handed person, I had to adjust and learn to play it upside down which was not ideal. It led to a lot of mistakes and caused me to lose confidence in my abilities.

    In comparison to other acoustic guitars in the market, there are definitely better options out there. I’ve played guitars that had a much smoother fingerboard and felt more comfortable to play. Although the SIGMA TM-12 does have a decent sound, it’s not exceptional enough to make up for the discomfort I experienced while playing.

    Overall, I would only recommend the SIGMA TM-12 to right-handed musicians who are already experienced with steel string guitars. Otherwise, it’s probably best to look for other options.

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Frequently Asked Questions:

How does the Sigma TM-12's proprietary bridge pin installation process ensure greater string load distribution and reduce string breakage?

The Sigma TM-12 guitar features a unique bridge design that incorporates a proprietary bridge pin installation process. This process involves drilling holes in the bridge plate at an angle, rather than straight down as is typically done. This angled drilling allows for greater string load distribution across the bridge plate and reduces stress on the strings where they meet the bridge pins. By spreading out the force of the strings more evenly, this design helps to prevent string breakage and ensure a longer string life. Additionally, this process also improves the overall intonation and tuning stability of the guitar by minimizing the impact of string tension on the intonation adjustment screws.

How does the Sigma TM-12 preamp and tuner system differ from other guitar electronics in terms of signal processing and noise reduction technology?

The Sigma TM-12 preamp and tuner system stands out from other guitar electronics due to its advanced signal processing and innovative noise reduction technology. Unlike traditional preamps that simply boost the weak signals picked up by a guitar, the TM-12 incorporates a unique Class A discrete buffer circuitry that preserves the natural tone and character of the instrument while delivering exceptional clarity, definition, and headroom. Moreover, it features a proprietary noise reduction system called Quiet Tune, which utilizes sophisticated algorithms to eliminate unwanted noise and hum without compromising the signal integrity or dynamic range of the guitar. This makes the Sigma TM-12 an ideal choice for players who demand exceptional sound quality, reliability, and versatility in their guitars' electronics.

How does the SIGMA TM-12 acoustic guitar's unique bracing pattern contribute to its exceptional tonal projection and balance?

The SIGMA TM-12 acoustic guitar features a proprietary bracing pattern called X-Bracing Plus. This innovative design reinforces the top board of the guitar, which results in exceptional tonal projection and balance. The X-bracing provides a stronger structural support to the top plate, allowing it to vibrate more freely and producing a louder and more balanced sound. Additionally, the plus sign added to the X-bracing pattern helps to disperse tension evenly across the top board, further enhancing the tonal balance and projection of this guitar. Overall, the unique bracing pattern of the SIGMA TM-12 contributes significantly to its exceptional tonal qualities, making it an excellent choice for acoustic guitarists who demand both volume and clarity in their music.