The organ is based on late 17th century English chamber organs, with mechanical parts and keys based on the mid 18th century chamber organ of Calke Abbey in Derbyshire.
| Stop’d Diapason | 8’ | stopped wood | |
| Principal | 4’ | open metal | |
| Fifteenth | 2’ | open metal |
The compass is C – d³, with four available pitches. The pipes have tuning slides, for different pitches and tuning systems.
The case front is a dummy based on the Galpin organ at the East end of Canterbury Cathedral. There is a foot pedal for raising wind, as well as a separate blower.
