The two-manual bowling instrument was built by Josef Kobrle from Lomnice nad Popelkou in 1903. It is one of the first instruments where he used a pneumatic tractor booster (Barker lever). This pneumatic apparatus is placed under the airbox and lifts the tone bars controlling the valves in the airbox. The instrument is one of the most interesting ones built by Josef Kobrle in terms of layout and sound. It is also his second largest instrument after the organ in Vysoké Mýto. Worthy of note is the rich scoring of the Second Manual, which features registers from the sixteenth-stop position to an aliquot series – the Sparkling fifth. The bowed ranks are also impressive, especially the deep pedal registers, faithfully imitating stringed instruments.
Thanks to the excellent acoustics of the church, the overall sound of the organ is majestic and offers a wealth of different tonal combinations. In 1990 the instrument was repaired by organ builder Karel Synek from Hradec Králové. The last major repair was carried out in 2009 by Martin Poláček from Prague for CZK 188,000.