Holo Audio has been focusing on using R2R ladder DAC to preserve the musicality of the content of digital music. Holo produces high quality and musical DAC, Headphone Amplifier and Pre-amplifier. The flagship “Spring 2” DAC, “Cyan” all-in-one DAC/Pre/Headphone Amplifier, “Azure” headphone/pre-amplifier have received positive reviews around the world.



“May” Discrete R2R DAC                                                                                           

“Spring 3” Discrete R2R DAC                                                                                   

“Serene” Preamp                                                                                                                                                                                         

“Cyan” Discrete R2R DAC, All-In-One Pre/Headphone Amplifier

“Azure” Fully Discrete Pre/Headphone Amplifier