OPTION
| OPTION | specification | period | price | note | |
| tuning system | tune strings independently | 1day | $40 | for recording or for quick tunig |
|
| pick-up system | piezo contact pick-up | 1day | strong to feedbacks |
|
|
| 20mm cussion | 2525cm | $7 | comfortable |
| |
| Bubinga head | 2.8mm thick | 3days | $20 | nice grain |
|
| birch laminated head | 2.8mm thick | 3days | $20 | well balanced in all range |
|
| Aircraft@Birch head | 2.5mmA3mm | 3days | $40 | clear sound and very duable |
|
| paint all | black, red, white | 3days | $60 | add a little more low sound |
|