The architecture of the TEAC UD-501 is unique and unseen for a product of this price range and it becomes a totally different beast after our signature mod upgrade. After the mods, inner details and harmonic resolution, previously submerged by the background noise levels, will emerge. You will find that every aspect of the sonic reproduction from the DAC improved. Bass, PRaT, sound staging, natural, accurate tone of human voice and instruments, are improved by leaps and bound.Read more
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We replace the stock voltage regulator powering these oscillators with our Ultima low noise voltage regulator, then changed the critical components to higher grade parts. The analog output circuit is also modified for better sonic. Six stock power supply voltage regulators are changed to our Ultima low noise voltage regulator further reduce the noise at power line for DAC chips and Opamps.