Alright, now that I am at a computer I will do a write up. It is tough to compare because they are very different machines and have pros/cons of each.
If you don't feel like reading everything below, the DJ Tech takes this round against the heavy hitter TDK 3 Speaker modern box.
DJ Tech sound against any vintage 1 piece radio, hands down the DJ Tech.
DJ Tech vs TDK 3 Speaker.
Playing all types of music (country, dubstep, pop, hip hop, rock, etc) each box hits points that the other does not. Only way to break this down is by category.
SOUND
We have all heard the term 'rock box' which basically means that the boombox sounds best with notes affiliated with rock music and struggles more with notes near or just above the 808 range.
The DJ Tech is definitely a rock box that hammers out mids and highs with ease but still gives a punch that you can actually feel firing straight out of this radio. The bass ports pointed right at you helps with this feeling. The DJ Tech is no slouch when it comes to lower bass notes, matter of fact it does really well. You do have to dial back the bass if you are listening to new age rap/dubstep because most of that style of music has a lot of low end notes. Just because you are turning the bass down 1/4 of the way, the volume of what you are playing really never stops on the DJ Tech. Most of the time when I had the TDK maxed out (volume, bass, and treb), the DJ Tech was just a hair over 1/2 volume and you still had the option to turn the bass and treble back up. Now I have referred to old school blasters as 'rock boxes' but if your old ghetto blaster sounded like the DJ Tech, you would call it a bass machine.
The 3 Speaker TDK is such a warm sound, deep soulful sound, that can hit the low notes not only moving the speakers but you will hear the note with less distortion than the DJ Tech but no where near as loud. Where the DJ Tech can hit the high notes, the TDK lacks. I really didn't know before this VS test the TDK didn't reach as high on the treble as I originally thought it did. The TDK case is sealed and I know they probably tested the heck out of sealed vs ported for this radio, but I would still bet that the 3 speaker would sound even better with a ported box, much like its smaller brother the 2 Speaker TDK. I noticed a lot of the time the center woofer on the TDK just flops around too much without producing any real deep bass and makes some music distort compared to the smaller 2 speaker TDK.
LOOKS
The TDK 3 Speaker is a classy looking machine, like the business man's blaster that he just can't muster the strength to bring it to the streets (because of beauty, actual weight, and battery consumption). Clearly the DJ Tech has the old school look with knobs and switches galore which appeals to a lot of us. Removable trims makes modding this box an option for those that want to go that way or even for servicing the radio. The handle is just pure shiat but I don't think it is the design of the handle that sucks but just the execution of making it not feel/look so cheap. The TDK is so nice, looks, feels, and sounds so expensive. Quality visual parts with sleek design but is sealed up like a Sherman Tank. There is no visual analyzer on the DJ Tech and I feel it should have some bouncing LEDs to complete the look. The TDK has a nice liquid crystal analyzer that at least gives you something to look at.
I'm going to mention the power supply cord setup in the looks department too but I absolutely HATE these power supply bricks outside of the radio, they both have this style brick and I know it costs less to put these external universal bricks with new electronics. If I was in the design/development of any new radio, I would can the guy that suggests having a power supply like these. They look ugly and they are clunky to carry around separate if you are taking the radio anywhere to plug in.
FUNCTION
Both the TDK and the DJ Tech have a decent amount of playing options but the biggest difference is the lack of internal Bluetooth and rechargeable batteries on the TDK. The TDK takes 12 D batteries and not only do they lack longevity but the TDK will kill batteries over night even with the radio turned off. Holy crap TDK did you fail at this battery setup. I appreciate you trying to make this a portable radio, but it flopped. Oh, and the TDK is very heavy and has a big body on it which makes being a portable unit almost impossible. With the sleek design of the TDK any scratch or ding in the mirror black plexi on the front panel would ruin the look of it. The TDK does have a USB jack, so if you want to put a BT usb receiver into it you can but that is just another item to make sure you have along to make a BT feature work.
Both units have FM radio and that is important to me and is one of the reasons I have not bought the Aiwa EXOS 9 boombox. There is always a time that we want or need just a simple FM station to have some ambient noise. I don't like my life to be linked to the internet all the time so Spotify, radio.com, or any other streaming radio station is not for me.
The DJ Tech is totally portable. Not too heavy, not too big, rechargeable battery, it just has everything to be a great portable machine and sounds great. It has a lot more options for playing, mixing, and linking together as well. Also has SD/USB sound recording which is really cool and the TDK doesn't have this feature. TDK also does not have a line-out.
I feel like I have more to say, but I will stop for now.