SKU: 45723081278

Martin Custom Shop 00 Size 42 Style w/ Koa, Swiss Spruce

Sale price$4139.55 Regular price$4599.50
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Description

Martin Custom Shop 00 Size 42 Style w/ Koa, Swiss SpruceIn the spring of 2018, Russo Music worked in collaboration with the Martin Guitars custom shop to design a series of custom acoustic instruments. Russo Music hand selected through sheets of some of the most revered tonewoods sourced throughout the world. The result is a line of six guitars all unique in their own rights, but all true blue Martin guitars in both sonic quality and visual presentation. This guitar is a Custom Shop 00 42 12 fret. The 00

In the spring of 2018, Russo Music worked in collaboration with the Martin Guitars custom shop to design a series of custom acoustic instruments.  Russo Music hand selected through sheets of some of the most revered tonewoods sourced throughout the world.  The result is a line of six guitars all unique in their own rights, but all true blue Martin guitars in both sonic quality and visual presentation.

This guitar is a Custom Shop 00-42 12 fret.  The 00 body style is a very popular concert-style body, and has been long favored by fingerstyle players among others.  Here we have a 00-12 fret body size, whereby the neck joins the body at the 12th fret rather than the 14th fret.  Players who often do not surpass the higher register may notice lesser fatigue over extended playing sessions at the first position.

This 00-42 is comprised of a High Altitude Swiss Spruce top and figured Koa back and sides – two of the most widely appreciated tonewoods available today.  High Altitude Swiss is revered as perhaps the highest quality spruce on the planet. It boasts an extremely tight grain pattern and can be almost snow white in coloration. This particular book-match is littered with bearclaw figuring which you can see clearly in the photos. Koa – on the other hand – grows in one location on the great island of Hawaii – and it can only be sourced after falling on its own.  The back and side Koa chosen for this guitar has a highly figured flame – with an almost three-dimensional pattern seen when held up to the light.

Tonally, this guitar has a pronounced mid-range voicing and tons of volume fit to fill any room.  Its gloss back Mahogany neck is very comfortable and wants to be played.  This 00-42 has a substantial dynamic range with incredible string definition and projection, whether played with a pick or fingerstyle.  Abalone snowflake inlays and top binding, gold Schaller open-back tuners, and full gloss finish exemplify this guitar’s visual beauty – and the capabilities of Martin Custom Shop builders and luthiers.

Working with the Martin Custom Shop is nothing less than an honor.  We present this 00-42 with great pride and dedication to those of all facets of mutual appreciation of the acoustic guitar.

Specs

Top Material: High Alt. Swiss Spruce, Premium Bearclaw
Back/Sides Material: Premium Figured Koa
Neck Material: Mahogany
Fingerboard Material: Ebony
Body Shape: 00
Fingerboard Radius: 16”
Scale Length: 24.840”
Nut: 1.75” - Bone
Electronics: N/A
Finish: Full Gloss
Case: 5 Ply Hardshell Case 525 Cabernet
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 45723081278

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4.2 ★★★★★
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Sophia S.
Phoenix, US
★★★★★ 5
Comfortable, cooling, and OEKO-TEX certified, it’s a great way to refresh any mattress.
This 3-inch mattress topper instantly upgraded my bed with a softer, cooler, and more supportive feel. The bamboo-viscose fabric is noticeably breathable, helping regulate heat throughout the night—great for hot sleepers. The 1200GSM down-alternative fill adds plush, cloud-like cushioning while still offering balanced support for the back and shoulders. It fits securely with the deep pockets and stays in place even when turning. After allowing it to fully expand, the topper fluffs up beautifully. Comfortable, cooling, and OEKO-TEX certified, it’s a great way to refresh any mattress.
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Reviewed in the United States on December 8, 2025
L
Leon
Whiting, US
★★★★★ 5
Great upgrade for a rental apartment mattress
The mattress in my rental place is firm to the point where it almost feels unfinished. Instead of replacing it, I decided to try adding this topper. It made an immediate difference in the way the bed feels when I sit or lie down. There’s a nice cushioned layer that softens that “flat” feeling but still holds its shape. Another thing I noticed is how breathable it is. I expected thick padding to feel warm, but the airflow here feels better than the original mattress surface. Even after moving around, it never felt heavy or stuffy.
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Reviewed in the United States on November 22, 2025
A
Alexa Young
Draper, US
★★★★★ 5
Soft and Comfortable Topper
I got this bamboo mattress topper for a small single bed we keep in our guest room, but I ended up testing it out myself first. The material feels soft and breathable, which is nice because that room can get a little warm in the afternoons. It adds a good amount of cushioning without making the bed too soft. After a couple of nights, my back actually felt better compared to the old mattress alone. I also appreciate that it’s machine washable, because our guest room sometimes doubles as a nap spot for my son after swim class, and spills happen. It dried pretty quickly in the dryer and kept its shape. Overall, it made the bed feel much more comfortable and fresh.
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Reviewed in the United States on November 24, 2025
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TED
Carnegie, US
★★★★★ 5
Added comfort for someone working night shifts
I work odd hours, so my sleep schedule is all over the place. My mattress has always felt a bit too stiff after long shifts, so I got this topper hoping it would help me relax faster. It really changed the overall feel of the bed. The padding has a cushioned lift that makes lying down feel smoother, especially around the shoulders and lower back. Instead of feeling like I’m dropping onto a firm surface, there’s a soft layer that evens out the pressure. What surprised me most is how light the surface feels. Even after staying in one position, it never gets stuffy or heavy. The airflow makes a difference when your body is trying to wind down after work. The fitted pocket also stays tight around the mattress, so nothing shifts when I move. I can stretch out without worrying about the topper sliding off.
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Reviewed in the United States on November 24, 2025
K
Kyle
Battle Creek, US
★★★★★ 5
Good option for softening a college apartment bed
I moved into a college apartment where the bed felt like it belonged in a dorm from years ago—flat and stiff. Instead of dealing with it, I tried this topper, and it added a cushiony layer right away. The surface feels much more forgiving when I fall onto the bed after studying or hanging out with friends. It has just enough padding to take away that board-like feeling without making the bed sag. Another thing I noticed is how breathable it is. I expected something this thick to feel warm, but it actually stays cool even if I stay on one side for a long stretch.
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Reviewed in the United States on November 19, 2025

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