With the Beat Booster you can increase the audio input volume and the installation is done without any soldering or cutting any wires. You can use your PT-01 with your upgraded onboard speaker and have great sound!

Visaton FRS 5 X full-range speaker
5 cm (2") full-range speaker with black basket and two fixing lugs. Due to its low resonant frequency the frequency response starts already at 120 Hz. Suitable as full-range speaker and medium-range driver in speaker systems for HiFi and background music and for 100 V PA systems. Thanks to the slim construction, also suitable as a control speaker in electronic devices.

Note: Speaker must be used with adapter. Adapter sold separately