New Design Detail
pictured above: Tropication K.K.capri converted to Geared Peg Sanshin / Cherry Brown finish / Gotoh Stealth SB4 black. Total cost = $448.00 (K.K.mono) + $333.00 (Geared Peg conversion) = $781.00.
Geared Pegs (machine heads) have always been at home on the head of a Fender Stratocaster or Les Paul guitar, but trying to marry something metal to a sanshin in a harmonious way was always incredibly difficult. The solution…a skilled sanshin craftsman and guitar maker have worked closely together to create the perfect sanshin neck (sou) for the perfect metal peg.
The design/shape of the sou is based on the oldest sanshin Haebaru form. The geared pegs are the latest innovations from Japanese company Gotoh. This incorporates a good balance between tradition and technology, finished in a sophisticated design.
Convert your sanshin to a Geared Peg Rokushin (six strings) gives you twice the octaves to play with, and opens up a world of guitar songs. A more versatile instrument, and thanks to the precision and stability of the Gotoh geared pegs it’s easier to tune!
Designed in Okinawa, handcrafted and assembled in Okinawa using Japanese components, we think we have managed to produce something special.

Neck Design

A Guitar craftsmen and a sanshin artisan worked together to create something original for the ironwood neck. The design of the sou is a result of combining each other’s skills and knowledge.


Choose between Matt Black or Cherry Brown finish for the neck (sou). Both finishes bring out the metallic color of the pegs.

Geared Peg ・ Gotoh Stealth Key

Gotoh’s newest model, the Stealth Key, is the smallest and lightest geared peg in the world (1/2 to 1/3 the weight of ordinary guitar machine heads). Despite the light weight, it is extremely durable and allows for easier and more precise tuning when compared with a conventional peg.
Please note: Each custom order will take approximately two weeks to complete.
Geared Peg sanshin conversions are available for all sanshin purchased from the Asoviva web site,
and also for customers who wish to convert a sanshin they already own.
■ For customers wanting to convert a sanshin on the Asoviva web site:
1. Add your sanshin of choice to the cart.
2. Add either the Geared Peg Sanshin or Geared Peg Rokushin Conversion to the cart.
3. Check out.
■ For customers wanting to convert a sanshin they already own:
1. Add either the Geared Peg Sanshin or Geared Peg Rokushin Conversion to the cart.
2. Check out.
3. Send your sanshin to the Asoviva shop located in Yomitan Village, Okinawa. The customer will incur the cost of postage to Asoviva. We will notify you once your sanshin arrives.
4. Once your sanshin has been converted, we will dispatch your converted sanshin, along with your original neck (sou) and karakui.
Item # Item Description Finish Price(USD)
peg-1-mb Geared Peg Sanshin Conversion Matte Black $333.00
peg-1-cb Geared Peg Sanshin Conversion Cherry Brown $333.00

peg options

peg model:
[Gotoh Stealth SB2] [Gotoh Stealth SB3] [Gotoh Stealth SB4] [Gotoh Stealth SB5]

peg color:
[Silver] [Black] [Gold]

English Customer

The well-known Okinawa style instrument is the SHAMISEN; it is a three string guitar played by many of the people of Okinawa. The Shamisen has been increasing in popularity with foreign people all over the world for its beauty. The natural wood Shamisens are design with a bright color body.

We ship to five to ten different countries every month. (e.g. U.S.A, Mexico, Argentina, England, Germany, France, Greece, and Ireland) We provide a free practice manual (10 pages) in English. All songs use C.D.E chord chart so it is easy to understand for beginners. So you can recommend sending an Okinawa Shamisen to your friends, with no worries about knowing Japanese.



1,000 yen flat rate inside Japan. Free shipping on orders of 5,000 yen (Inside Japan only).


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We will ship within three business days of your order. We will contact with you if your order is out of stock.

Credit card safety

We use secure sockets layer (SSL) to protect the security of your credit card information as it is transmitted to us.

North America ·
Central America ·
Middle East
South America · 
Up to 1.0kg 1800 yen 2400 yen 2800 yen 3800 yen
Up to 1.5kg 2400 yen 3200 yen 3700 yen 5400 yen
Up to 2.0kg 3000 yen 4000 yen 4600 yen 7000 yen
Up to 2.5kg 3500 yen 4700 yen 5400 yen 8500 yen
Up to 3.0kg 4000 yen 5400 yen 6200 yen 10000 yen
Up to 3.5kg 4500 yen 6100 yen 7000 yen 11500 yen
Up to 4.0kg 5000 yen 6800 yen 7800 yen 13000 yen
Up to 4.5kg 5500 yen 7500 yen 8600 yen 14500 yen
Up to 5kg 6000 yen 8200 yen 9400 yen 16000 yen