DC•BLOCK Leakage Current Isolation

DC•BLOCK Leakage Current Isolation

Regular price $165.00 Sale

A DAC will sound it's best when isolated from all types of noise. In the case of a coaxial input signal, optical isolation eliminates galvanic conduction and source RF noise;  well shielded coaxial cables limit their impairment as RF antennas; Faraday isolation of digital components prevents radiated RF noise effects; mechanical isolation of connections limits vibration noise; and ultra-low noise and low-impedance power at the DAC helps maximize sound quality.

Still to be considered is the potential for leakage currents at the signal input:

  • Coaxial S/PDIF is bi-phase-mark encoded for a zero average DC; however, symbol correlated fluctuations may transfer low frequency AC and DC energy over time
  • The upstream component source blocking capacitor may degrade with age and leak DC current to the DAC
  • Transfer of low energy DC may occur along the coaxial cable dielectric
  • 50/60Hz AC sources radiate EMF and induce current in upstream components and the coax cable - no matter the amount of shielding.

DC•BLOCK™ is an in-line device located right at the DACs coaxial signal input. It's a 2nd order Butterworth filter integrated in a BNC adapter that blocks DC and AC mains induced current. Zero unwanted current flow into a DAC means better sound and lets you extract the last bit of transparency from your system. Install one DC•BLOCK on a single-coax 384k connection; install a pair on a dual-coax (DX) 768k connection. The performance of the digital transmission is not affected.