Quick update on the Dasetn 760 and Tingo Croons 38S. I think I've finally found the earbud for me. Finally. After letting the 760s settle for a bit, I am extremely pleased with their sound. I find them amazingly balanced, clear, and most importantly of all: very lifelike and natural.
So here's my comparison for the time being:
Tingo Croons TG-38S:
These buds are quite good in every way for the price tag. They have exceptional build quality - the best I've seen out of these high end buds and the cable appears to be very similar to the Sennheiser MX581. They sound pretty good, but have some downsides. The soundstage is expansive and very impressive. Treble is detailed, but a tad fatiguing; however, not extremely sibilant. This is indicative of gear that does well retrieving details, but has the treble a bit boosted and a bit in your face. The mids are particularly good and crystal clear. Excellent. The bass really leaves a lot to be desired and is the primary reason I decided to look to see if I could find something more well rounded. I should say that I can totally understand if someone prefers the Tingo Croons over other buds since they are technically a very good piece of gear and powerful for reproducing details and spatial coordinates of notes very well. Perhaps better than any bud I've heard. I really wish I could take the cable on these and put them on a lot of other gear that I have. Although the buds do have a lot of microphonics, I think it might be due to the fact that the cables are poorly routed inside the shells and not necessarily due to the actual material of the cable.
Notes: These definitely don't require an amp since they are so efficient (perhaps the most efficient earbud I've heard, at least judging by ear), but can be ran with an amp if desired with some bass boost. Smartphones and commercial players definitely provide enough juice for these to have quick agility and fast response even for bassy, fast paced, and demanding music.
Pros:
Very expansive soundstage
Unbeatable build quality
Mids are quite good
Highs are clear and detailed (fatiguing for some so could be a con)
Cons:
Bass is rather anemic, leaves something to be desired
Sometimes can sound artificial or cold
Cable microphonics
tl;dr: Very good earbud, definitely worth $15. Might not be for everyone.
Dasetn MX760
After hearing about Dasetn awhile back from Danneq before this thread or any of head fi really knew about him, I inquired about ordering his MX1 model, but he told me he was working on a better bud, and that I should try that when he was done with it. The Dasetn MX760 is the latest/newest product, and flagship bud model of the DIYer Dasetn. I decided to pick one up finally. Well....I am extremely satisfied. These things are something else. I think this should be the primary recommendation of a budget high end bud for everyone. The sound signature is very safe. Balanced and very, very natural. Everything sounds the way it should sound. There is little if any boosted ranges in the tuning. Drums sound exactly as they should sound. Guitar notes are faithfully reproduced. All types of instruments are well replicated and positioned. There is no single range that is over powering any of the others. The highs are crisp and detailed - no sibilance, no fatigue. Maybe the Tingo Croons can pick up a bit more detail in the highs since they are partially boosted, but the Dasetn 760 really replicates highs with correct and accurate emphasis. The mids are fluid and clear. The bass is much better than the Tingo Croons. They might not be extremely accurate and tight like cans/IEMs, but I don't think bass can get much better than this due to the limitation of buds which can't form a complete seal unless really pushed into the ear hard. These are phenomenal buds for $25, and I think this should be the default recommendation for this thread since the Tingo Croons have been getting such mixed reviews from most people. I can't really see too much reason why anyone would not like the Dasetn MX760 besides the build quality compared to the Tingo Croons. The unfortunate thing is that the build quality of these DIY buds really lives up to its DIY moniker - unfortunately (the MX760 logo on the cable already fell off in less than 3 days). The cable is nowhere near as good as the Tingo Croons and is prone to tangling much more. If sound quality is your primary concern and everything else is secondary, these are golden.
Notes: These buds are rather efficient and definitely can be run with smartphones and commercial players, but clearly require a bit more juice than the Tingo Croons to achieve similar volume levels so an amp could help on faster and bassier music.
Pros:
Extremely natural sounding; everything sounds "right"
Well textured bass for earbuds; probably best you can get unless you go high end Blox/external amped PK1
Highs, mids, and lows are well balanced and compliment one another well; superb driver tuning
Cons:
Build quality is not as good as Tingo Croons, but rather in a similar league to the Yuins, Blox etc
tl;dr: If you are looking for a budget earbud and safe bet that you will definitely enjoy - get this now, no question. Cannot recommend enough.