This tape is probably the best your going to get out of CrO2 bias tape. I've had wang chung and the cars on this tape without any dolby for over 20 years and it still sounds like a CD. I still have the original labels and warranty, but still haven't needed to replace it. I'm actually going to be honest, I listened to the albums on this cassette on spotify, and the stream quality on extreme doesn't even come close to the "digalog" recording.

these are the genuine Maxell XLII-S HIGH BIAS Audio Cassette Tapes , sadly discontinued and no longer made by Maxell . very high quality

I use the Maxell XL-S 90 for recording from FM-Radio.

I use a Marantz 10b tube tuner, a unit which was prof. restored (otherwise a 10b is pointless), with some modifacation from Giacomo Pruzzo from Italy:
[...]

Such tuner you will never ever sell - it is indeed the best (and I have a Scott 4310 and Telefunken Ballempfänger too, etc.)

With the 10b I go directly into a Studer A721 cassette deck. This is a very reliable deck, studio quality. The tapes recorded here can be well played on other mashines, like Naks, etc.
From the A721 I go into a tube amp, a diy one - connected to it are two different speakers, a Kenwood and a Pioneer CS99a from the 70ties (of course you usually use an identical pair, but they just do their job).
That's all - no pre-amp needed.

Some days ago I had some young men here from Lituania, aged around 30.
I took the A721, connected it to a Fisher C800, and some Pioneer LS.

I could see they were impressed about the sound - it was just warm, clear, and nice to listen to (some buddha-bar tunes).
When they see it is a cassette they were surprised.
Then I turned on the volume slightly - it was impressive. The music was real music, it came in studio-quality.
I use many different types of cassettes in the past, but now I shall switch to the Maxell XLII-S.
The one I used was the XLII-S 100, made in Japan, kind of heavy.

Enjoy! Matthias

ps Some folks imagine a cassette have "always" a background noise.
Such people either never tried a cassette, or their system is bad.
When there is a pause, the Marantz is black quiet - the Maxell XL-S is black quiet too, obviously.
The cassettes were a wonderful medium, they are underestimated, they are so easy to handle and will keep the sound well.
I also use the recorded cassettes to make records on CDs, on MFSL 24c gold CDs, as for instance with a
Marantz CDR 630, which has a very good analogue-digital transmitter.
https://www.amazon.de/review/R18LHYM573F3AD/ref=cm_cr_dp_cmt?ie=UTF8&ASIN=B000MULMHS&channel=detail-glance&nodeID=562066&store=ce-de#wasThisHelpful

Best tapes for my Nak ...

Outstanding quality!