Tansio Mirai TSMR-3 Pro – Penon CS819, GS849 and GD849

3 Switches, 3 Cables.


I would like to thank Penon Audio for providing the Tansio Mirai TSMR-3 Pro IEMs and Penon CS819, GS849 and GD849 cables for this review. No incentive was given for a favourable review.

Tansio Mirai TSMR-3 Pro

  • Drivers: 3 x BA
  • Frequency response: 15Hz-20kHz
  • Crossover: 3-way
  • Switches: 3 switches for 7 settings
  • Impedance: 15 Ohms
  • Sensitivity:113 dBL/mW
  • Price: US$219



By now I have reviewed quite a number of very high-end IEMs and as an audiophile and hopeless impulse buyer of things-too-expensive-for-any-reasonable-chap, I am quite in my element there. I greatly enjoy the opportunity to spend some quality time with delectable treats covered in pure silver shells or crammed with the latest technology to find its way into the hands of evil audio geniuses. Frankenstein hybrids with an equally monstrous price tag? I am fine with that because I know it is a pathological addiction to shiny luxury things. Sometimes though, purely by accident I assure you, something affordable arrives at my doorstep and I get a little nervous about whether or not I will be able to step off my pedestal of audiophile snobbery and be able to enjoy something sensible for a change. Happily, I will admit that several times already the sensible stuff did not just provide me with a lot of fun, some of it straight up slapped me in the face with a resounding correction about what I thought possible at an affordable price. Indeed, secretly in a dark corner of my private life I actually listen to those just as much as the expensive stuff. I will refuse to acknowledge it in public of course. Need to keep up the audiophile family honour, or something silly like that…

Enter the Tansio Mirai TSMR-3 Pro. Affordable, 3 BA, 3 switches and 7 settings. Okay, I’ll admit that got me curious again. I have used IEMs with nozzle filters in the past and those have never quite convinced me. Some were poor quality and ended up not fitting securely and others seemed to have a suboptimal effect on the sound. Therefore, a system based on switches got me curious if it would work better than the filters. Penon also sent along three of their own aftermarket cables at various price points, just to add a little bit of decadence.


The TSMR-3 Pro come in a neat white box with very understated graphics on it, inside of which is a generous size black case with the IEMs and accessories in it. The accessories include a soft pouch, a very healthy selection of tips, a cleaning tool, a metal tool for changing the switches and a handbook that contains information on the different settings. (Note: I think a second metal tool, normally used for opening SIM card slots on phones, inadvertently slipped in because the IEMs came to me from someone else. However, it seemed to work better than the original tool included and so I kept using it.) Overall the accessories are very useful and there is nothing that I particularly miss, especially at this price point. The black case is even a really convenient size for the IEMs and perhaps a few extra things you might want to bring along. You know, when you have a bunch of extra cables you might want to pair with your IEMs… Nudge, nudge. Wink, wink. Because there is a few extra cables included in this review… Oh okay, not my best joke.

Build quality and fit.

The build quality of the IEMs feels pretty solid and I got the feeling that they would stand up to intensive use quite well. It is not the highest quality of finish I have seen, there are some minor imperfections such as air bubbles, but overall, they look nice. Most importantly the switches felt good and like they could be switched a fair few times without issues. The included cable is a fairly standard affair that feels a bit plastic but is supple and thin enough that it is comfortable to use. The ear guides do have a very strong curve to them and that has caused the odd moment of frustration while trying to get them to loop around my ears.

For my ears the fit was great. I used the included silicone tips with the green core in size M and I got a very good seal with those. The IEMs also sat flush with my ears and did not move around at all, even when I tried them out during training. It was both a very secure and very comfortable fit.


All listening was done with the Cowon Plenue 2 from the SE out (stock cable) and balanced out (aftermarket cables).


Page 2 – Switch settings and Sound Analysis.
Page 3 – Aftermarket cables CS819, GS849, GD849, and Conclusions.

4 thoughts on “Tansio Mirai TSMR-3 Pro – Penon CS819, GS849 and GD849

  1. Great article. Keep up the good work 😉

    But I have a question:
    How does the Penon GD849 sound compared to the Penon OS849 or a similar priced Cable from Effect Audio or Plussound?


    1. Thanks Michael! I don’t have the OS849 myself, so I can’t comment on that. I also did not do comparisons with other cables simply because this review was a lot to work through already (3 switches with 7 settings and 3 cables) and I only have Ares II within this price range. So I’m afraid I can’t provide an answer at the moment. I might look into it later and if I do I will let you know.


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