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Re: Chip regulator may not sound so musical to many discerned ears, unless ...

82.44.163.8

Nope they don't sound at all good this way decoupling or not ! About the last thing you need is decoupling , what is required is isolation . Chip regs (adjustable types) are best used as current regs but everytime I find it better using LCL . Also for critical filament (not heater) applications , current reg connected IC's can be noisy . Filament supplies are critical to good sound of DHT's , much more so than with heaters but practices for filaments can be implemented to good effect . A typical cap input supply filament followed by an LT1085 type chip can much be improved by changing the supply to choke input and improved once again by removing the chip and replacing it with a choke . Not all chip regs are equal either . Chips made using legacy technology such as LM317 sound awful and are noisy as CCS , LM108x and LT108x series are better but not as good as a choke . For phono stage use which you mention ,(which normally use indirectly heated tubes) balanced supplies provide optimum performance rather than the type of regulator chip


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