I was a huge fan of the Bluedio R+ Legend. I bought two pairs; the first I wore almost constantly for more than a year, working on the car, lawn, house chores. The headband broke after many, many dozens of clunks, twists and drops, and I bought another pair.I bought up their newer offerings - Vinyl, Victory - and found them lacking. Vinyl had an interesting aesthetic and great build quality, but with a 70mm full-range driver, had a somewhat unusual effect. Not as deep and guttural as I would have thought for such a big driver, and lacking some high end crispness I'd hope for any headphone, along with being a bit tight on my head, and having some spotty connection quality issues, a weird "pause" at random intervals, or "skipping", near the beginning and end of each track, for a sequence of tracks. Keep listening and it would stop. The Victory I found pretty darn satisfying in terms of comfort and sound quality, but had some amplifier noise. You could hear silence - hisss - like ANC white noise, but there is no ANC.A bit of background: I'm in a lengthy process of buying, testing and reviewing full over-ear bluetooth headphones just due to the number of hours in an average day I listen to music with them - in the office, cooking in the kitchen, chores around the house, working in the yard or working on the cars, watching shows after kids are in bed. I'm drawing my upper boundary for paying for a superior set of headphones around $500-600 - of course you can spend more than a few thousand bucks on headphones but they can really only get SO good over bluetooth before... well, you get the point. And while my top three headsets to date (#3: Plantronics Backbeat Pro 2, #2: Bowers & Wilkins P7, #1: Bang & Olufsen H9) are $200, $400 and $500 respectively, I am completely agnostic about testing and trying the least expensive - quite to the point, I found this pair of $18 headphones to be completely acceptable in terms of delivering sound quality, from the deepest bass to the highest treble. https://smile.amazon.com/gp/product/B01JTYWJSI/ Cheap and light construction, to be certain, but I have tested out quite a bit more expensive units, such as Photive BTH3 ($40) and Bohm B-76 and equivalent whitelabels ($110) producing simply unacceptable, inferior bass even relative to the $18 pair above.I went back and listened to my second pair of R+ Legends and found they actually do the same thing. Before I suppose I just ignored it, got used to it, not really having tried much. I found these, the bass was great, and I had gone through many pairs of wired headphones where I found the bass inferior. Good enough. Now... I'm trying around so much, I guess I guess I get to be picky.What I will say is: these do make that amplifier sound. MOST normal humans will not notice or care. Other than that, I was a little reticent given that these are more entry-level headsets from Bluedio, where I found some of their higher-end offerings lacking ("for the price" anyway). And, these sport a 57mm driver, so I thought, this could be somewhere suffer some of the same strangeness of the Vinyl. Not enough bass for the size of the driver, not enough clarity and perhaps some distortion due to the size of the driver.I'm pleasantly surprised. These have BIG bass. This is proper. It's tight, full, one I would clearly label as "bass-forward". Some would find it off-putting; I LIKE it. Very much. I find it to be the closest spiritual successor to the sound sculpting of the R+, more so than the higher-end offerings (which again, are VERY good, very comfortable, vastly higher quality construction than the R+ was, and DO sound extremely good - except in silence...). But for being "bass forward", they do use that extra driver real estate to crank out some real low, low-end sub-bass performance without muddying the bass and mid-bass. In other words, the equalizer curve emphasizes deep, deep frequencies in exactly the right place, where only a driver this big can, without goofing up the rest of the frequencies. This is, in essence, what I had hoped the Vinyl would sound like - and it didn't. This does. And it is good. Very good.These are also extremely comfortable. They're lightweight but make prodigious use of metal - the arms are fully metal, hinges are fully metal, and the "cantilevers" surrounding each ear cup are metal. Critically - and something almost no competitor does - the housing where the arms enter the headband are fully, solidly made of metal. I found (with some regret) with, for example, the BlueAnt Pump Zone, the arms are metal, but the housing where they enter the headband are plastic - and therefore, surprisingly brittle. That's where the headphone is going to break. This one detail is an important one; I'm giving these a big +1 not just because they use metal, but they use it IN THE RIGHT PLACES. Altogether, it's not just an aesthetic or a feel; it's used to make a more solid, durable overall unit. I expect the combination of metal-on-metal hinges, and a metal housing at both ends of the headband, to make these more durable than most.At this price point, I find these to to be superior to other offerings - which I also happen to like very, very much. The AudioMX AX-05 is aesthetically a notch prettier and also makes fantastic bass, but not quite like these. The iDeaUSA headphones here; https://smile.amazon.com/Bluetooth-Headphones-iDeaUSA-Reduction-Lightweight/ are also VERY good in every respect. Comfortable, fully adjustable, look good and sound GREAT. Listening through my favorite test tracks with these T4S, I think, just being a lover of prominent deep bass, I might prefer these over anything else I've listened to under $200. I may do a side-by-side with my higher-end cans. And while I'm raving over the bass, I will say, I'm enjoying the vocals, instruments, the treble - I'm not missing anything. I love "more everything" sound. This, I believe, is that exact kind of sound. Nothing is dull, nothing is lost. It's all there, right at the front, projected and articulated.I have not tested battery life, call quality/handling, outdoor connection quality. I'll revise my review as necessary once I have time to do so. I'll also say that the sound quality with ANC activated is clearly diminished. It's still good - better than most - but my raving above is based on the ANC being turned off. ANC does work well, by the way. Maybe not quite Bose QC35 or Sony MDR1000X but as with many, close enough to be practical for air travel, so on. I haven't tested many ANC headphones that aren't good enough; the only place ANC fails is when it completely squashes the sound quality, which some do. This is still good, but clearly different. The best ANC headphones have excellent sound, and ANC has little or no impact on that sound quality.Minor criticisms:1. The voice for "power on", "connected", "power off", etc. is obnoxious. Very obnoxious. You'll see what I mean.2. These - as with almost all <$200 over-ear bluetooth headphones with ANC - have the unfortunate control layout of turning the "music" power on independently of ANC. So if you turn them "off" - hear it say "power off" - but leave the ANC switch activated, you can accidentally leave ANC running all night and drain a good part of the battery. I wish the master power switch would turn ANC on/off as well; if you only want ANC, you can just as well turn on the master power and not play any music (as you would do with Bose QC35, Sony MDR1000X, B&O H9, etc. etc.). There must be added effort to that circuitry that cheaper units can't effect. Not much of a negative since, as I said, pretty much every headset with ANC up to $150 or so has the same shortcoming.3. The button controls are a little weird. The large button on the rear you'd think was a multi-function button is actually a rocker switch for volume / track control. The two identical buttons on the front of the right can is actually power and multi-function, respectively. Not really a problem; they work well. It's just different than pretty much any other headset.The sound is tops, the aesthetics are good to great, the comfort is good to great, but I'm giving this a comfortable 5 stars based on build and material quality. I wasn't as gentle with the Vinyl or Victory, but I can very, very comfortably recommend these - especially for the price. From someone who gets to be hair-splitting picky about bluetooth headphones, has tested dozens, and only REALLY likes about half a dozen - these are a no-brainer, no-regrets purchase. Very very happy with these. And very happy to have this listening experience, for Bluedio to redeem itself. Terrific cans for a great price makes for not just a hard-to-beat listening experience, but also redeems Bluedio quite a bit in my humble estimation.Happy listening!