I would say the B3 is more technical & resolving and has more microdetails. It has better soundstage, imaging, and separation. Clearer, brighter mids. More lower and upper treble presence/quantity. It is also much brighter out of the box and has a noticeable amount less in bass quantity. After 15 hrs of burn, in the B3 became more tolerable for me with the highs taming some and the bass coming out to play more... bringing a touch of warmth while remaining really balanced(brightly) and pretty neutral. It also needs an amp to perform its best IMHO. Its signature works great with Classical, Orchestra, Jazz, Folk, Bluegrass, Easy Listening, Piano, Soundtracks, Acoustic, and chiller/smooth Alternative.
The TTPOD T1-E is much more fun & lively and HiFi sounding with its enhanced bass quantity. It has amazing bass quality and quantity. The sound is very warm on the whole, but with good detail and resolution. Its highs are more tolerable than the Havi B3, but still detailed and clear. Even with the enhanced bass and present upper mids/highs, the mids are still there in full. They are warm, powerful, and clear too, striking a good balance and making this iem L-shaped. It is a non-fatiguing listen IMO that does not need an amp but for sure improves with one. Plus the fit is waaay better on the T1-E for me, which is the best I've encountered. The B3 has large nozzles that bother my ears no matter how I tip roll, so I can't really wear them for more than 2 or 3 hours. It works better with EDM, Rock, Alternative, Pop, Dubstep, House, Progressive, Electro, Chillstep, and Trap. It can also work well with essentially every genre but specializes in some more than others. Metal and Hardcore are good on both to me though I don't listen to that much. The T1-E's signature and fit/comfort suit my preferences&music tastes more than the B3(even if the B3 is technically superior and T1-E is down half a tier or one), and I don't always have to use an amp with them so I prefer them.
