At only 13kHz it is not going to see the really small gold that higher kHz detectors are going to find. If gold is all you're interested in there are better choices out there in my opinion.

Thank you,
Do you have any recommendations?

I was in the market for a dedicated VLF gold detector earlier this year. I wanted to support a local dealer so my research did not include all brands, just Minelab, Whites, Garrett, and Fisher. Since I have no interest in relics or coins I did not consider the Minelab Equinox 800, and since by the time you get the small coil for it you'll be over a $1000, that did not hurt my feelings lol. My research told me that the best choices were between the Gold Monster 1000, the Gold Bug II and the White's 24k. I honestly believe that between those three, for a dedicated VLF gold detector, you can't go wrong. Each one has little things about it that may make a difference for you, for me I wanted something that would detect small gold all three of those do, and they were all available through local dealers.

Gold bug 2 also is a pretty descent relic machine too. Though monster is a better strictly gold machine with its continuous ground balance.