About cassette tape!

1 do you play tapes with your boombox?
2 how do you prepare your tapes for your boom box?
3 is there a boom box that can produce super tape sound? (Recording)
4 which boom box has the best tape playback? ( playback)

I usually use a tape deck ( Akai or Teac)to make tapes for my boom box from CD. I found a dedicated deck make better recording. I like the sound of chromium type, especially maxwell.

BUt now all of my tape decks are dead. I'm looking for a boom box that can make good tape.

1) Yes, and the radio bands.
2) I don't know what this is supposed to mean. I guess you're asking how you properly carry your tapes with you when bringing your boombox somewhere? I know that the Conion C-100 had a tape drawer that you could fit a couple tapes in.
3) I never use the record feature, so I wouldn't know.
4) This question has probably been asked numerous times on the web. Brands like Sanyo, Zenith, Lasonic, JVC, Hitachi, and Panasonic made some great boomboxes. It really depends on your budget and the style you prefer.

I would suggest not using boomboxes for recording as the quality just isn't there. I would find a component deck with HX pro and Dolby C and record at +6db even with normal cassettes.

Any boombox will sound better with a high quality and high level recording.

Just a few thoughts:
Recording the tapes on a (quality) tapedeck delivers the best recording quality.
If you record by using Dolby B/C NR, the playback device also requires these features.
If you copy from tape to tape, all Dolby NR circuits need to be switched off on both source and target tapedeck; target tape with still feature the same Dolby recording settings than the source tape (1:1 copy).
However we are not any longer in the 80's and most of the tapedecks are old and maybe not ideally adjusted regarding bias, speed, tape head azimuth etc.
So, it could also make sense 30+ years later, to record and playback on the same device in order to bypass the possible different adjustments.

If your primary intention is to playback (and record) on a boombox, there are a few which feature a manual recording level, level meter, Dolby NR.
I would look for Aiwa CS-770 and above, Sharp GF666 and above, but there are many others.