Warwick Parts - Active 2-Way Onboard Bass Electronics for Active Pickups (Vol+Bal PP / T+B) - for Dolphin Pro I - SP W 70251 longscale-flat-45105 Dunlop Super Bright Stainless Steel

Dunlop Super Bright Stainless Steel Round Wound Electric Bass Strings Medium Scale Set - 4-String 40-100 DBSBS40100M

Mic / Line Switch

DR DDT Drop Down Tuning Stainless Steel Round Wound Electric Bass Strings Long Scale Set - 4-String 40-100 DDT-40

the only required modification is to move the output jack to the side of the instrument to make room for a battery

Warwick Parts - Active 2-Way Onboard Bass Electronics for Active Pickups (Vol+Bal PP / T+B) - for Dolphin Pro I - SP W 70251 longscale-flat-45105 Dunlop Super Bright Stainless SteelWarwick Parts Active 2 Way Onboard Bass Electronics for Active Pickups (Vol+Bal PP T+B) for Dolphin Pro I