Questions and Answers

How do I tell the difference between R4 Mk1 and R4i (Mk2)?

This answer applies to R4i Mk2

Visually R4 and R4i are identical but if the serial number on the rear of the unit, has a lower case ‘i’ on the end, this indicates that the product is of R4i specification with DAB+ capabilities and other technical enhancements. All R4’s manufactured from September 2010 have been of R4i specification.


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