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APS audio transformers

Custom audio transformers

Vocm Mod complete unit

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You send us your complete unit and we will install the Vocm mod and your new transformers if purchased.

You must pay for return shipping.  We will contact you for return shipping cost.

This price includes the Vocm caps.

About Us

We have been designing and building custom upgrades for the directstream DAC since 2019


You can read some reviews and find out some more info about our products here and here



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We are located in the

Baltimore / Washington area