Tin HiFi P1 I was going to include this in a review roundup of budget neutral ish iem’s but it got long enough to be its own review and when I read someone say there are no reviews of this iem on SBAF I thought I’d post it separately and include it in my roundup as well if that ever happens. The P1 is a very neutral iem (one of the most neutral I’ve heard, probably only bested by the CA Ara) with excellent tonality throughout the whole range except for some rough treble that makes itself heard basically only on clean cymbals but ruins them for me. Great detailed bass that has good but not perfect extension. Flat lower midrange which is very rare with headphones. Congested soundstage with only mediocre instrument separation which is strange because separation is usually something orthos are great at. Sounds are smeared together and bleed together in an unfortunate way. Creates a kind of "wall of sound" effect. The plus side of this is that it gives them a speaker like sound, not in terms of soundstage but sounds are not totally isolated all around your head, there’s a little mixing going on. Doesn’t really bother me a lot even though it is technically a weakness and I prefer the presentation of other iem’s that have better separation and space between notes. Treble They’ve got the rough treble problem that vintage orthos suffer from! This actually makes me happy because it means the problem isn’t from age, it’s something else (I haven’t figured out what causes it or exactly how to fix it yet though I know how to improve it). I don’t hear the peak everyone talks about I just hear a tonality issue. But it’s only rough on smooth cymbal work. Otherwise it’s not much of an an issue. Also I should note that I’m very sensitive to this rough ortho treble after all my time tuning orthos. I didn’t hear it at all when I first got into modding orthos. When I got my mods closer to perfect, suddenly I heard it and have never been able to unhear it. It bothers me more as time goes on. (Note it’s not an ortho problem in general, my modded T50rp has some of the cleanest treble of any headphone. So it’s something that can happen with orthos. Purrin thought it was ringing. Could be. It can be made better with the right damping materials. I’m guessing it happens when the driver’s treble rolls off naturally and you try to damp the driver to push them into creating treble extension that they don’t naturally produce. Midrange Great tonality and very neutral. Must be one of the best midranges among iem’s. The whole FR is very flat throughout lower mids to lower treble. Rare flat lower midrange. Excellent. A+ Bass Very well controlled and detailed and extends down almost all the way effortlessly but not quite all the way. There’s a bit of roll off in the last bit of sub bass. But in hindsight after returning them I think different tips would fix this slight sub bass roll off. Note: it’s slight. The volume just goes down a bit as the bass reaches sub bass. But again, I think different tips would fix it. The P1 has better bass than all BA iem’s I’ve heard. (Except for the Solaris but that’s dynamic driver bass not BA) Fit Terrible. They’re heavy and small and require deep insertion to stay in your ears but the shells don’t make that easy, and even then they kind of hang off your ears. No pain or discomfort though. I use Sedna earfit light tips with them. The regular version, not short. These tips reach to my ears far enough to hold them. They don’t fit well enough for the nozzle to get into your ears so I found I needed long tips. But in hindsight I may have been wrong about that because of the way they hang on the ears (don’t sit against outer ear, they hang off) I think shallower tips would be possible. Detail I think they are fairly detailed especially for the price but the smearing effect of instruments kind of ruins it and they don’t wind up sounding as detailed as they could. Thoughts from an ortho head I’m going to guess about what causes the 2 major problems keeping these from being exceptional. Rough treble Probably the driver doesn’t extend high enough and theyre damping it, possibly with the wrong materials to bring up the treble. This is complete conjecture as no one knows what causes this phenomenon with orthos. Smeared imaging Orthos should have exceptional imaging and separation. I just drove these from my iPod touch. But I know that source well, I have millions of hours logged listening to much harder to drive vintage orthos with an iPod Classic. They still have great Instrument separation. So I’m curios if the driver is aligned in a bad way in the shell. ie not pointed directly at the nozzle opening. This could cause this kind of smearing especially with an ortho driver. The enclosure is a strange shape. It’s strangely small given the huge ortho iem’s from monoprice and Audeze. The shells could easily be bigger, possibly allowing for a bigger driver, which might give them better treble, and better driver alignment/housing. The smearing could also be because of weird damping materials. Different damping materials have a drastic impact on all aspects of the sound. But who knows just complete conjecture. I wish they were openable and I could have my way with them. Ps. A little bird whispered in my ear that the P2 is coming soon. This could be an exceptional iem if they improve everything and fix the 2 main problems.