YFL-A421(U)(S) 中音長笛
| YFL-A421 | YFL-A421S | YFL-A421U | YFL-A421US | ||
|---|---|---|---|---|---|
| 調性 | Alto in G | Alto in G | Alto in G | Alto in G | |
| 外觀 | Clear lacquer | Silver-plated | Clear lacquer | Silver-plated | |
| 樂器盒 | Included | Included | Included | Included | |
| Headjoint Type | Straight | Straight | Curved | Curved | |
| Key Type | Covered keys | Covered keys | Covered keys | Covered keys | |
| Toneholes | Drawn | Drawn | Drawn | Drawn | |
| Pads | Traditional pads | Traditional pads | Traditional pads | Traditional pads | |
| Material | Headjoint | Gold brass | Gold brass | Gold brass | Gold brass |
| Lip Plate & Riser | Sterling silver | Sterling silver | Sterling silver | Sterling silver | |
| Body & Footjoint | Gold brass | Gold brass | Gold brass | Gold brass | |
| Keys | Silver-plated nickel silver | Silver-plated nickel silver | Silver-plated nickel silver | Silver-plated nickel silver | |
| Cover | Included | Included | Included | Included | |
