Already spend almost $300 today. Lol. Do I need another item? https://www.aliexpress.com/store/pr...734.html?spm=2114.12010608.0.0.4eae8dd1f4tVxO $56 on sale. Cheapest I have seen this little amp. Any word on the interwebs on this item? Wayne. I say go with either one. Though I think the RT1 will have the better isolation. I do notice the bass gets a bit muted out doors when using the DM5. The benefit of the DM5 is that you can use your new cables you can buy today with them being mmcx. The RT1 I will get soon but I have no idea which 2 pins will work on that earphone.