Repairs / Modifications

QUARK Audio started as a vintage audio repair business and it still proudly offers these services to the public. I am the US repair and modification center for Gilbert Yeung and Blue Circle, and I also provide warranty repair work to other audio dealers across the US. 

I offer a number of services and modifications, some of which are listed here, these will be updated with time. I work on new or vintage equipment specializing in analog circuitry, if it was once great, it can be again. There is also a chance that your vintage or new equipment can be modified to be better, given that the circuit has potential. If you have a component in need of service, have a question, or are interested in the possibility of modifying a particular component, please feel free to send me a message and I would be happy to help.  

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