






🎶 Capture your sound legacy with RTM C90 – where vintage meets pro-grade quality!
The RTM C90 Type One 90-minute blank music cassette delivers studio-quality analog recording using BASF's renowned Studio Master 900 formula. Manufactured in Normandy, France, with over 40 years of expertise, it features a reinforced shell for exceptional durability and a thicker substrate to ensure stable playback and minimal print-through. Perfect for professionals and enthusiasts seeking premium analog sound and lasting performance.



















| Recording capacity | 54.58 Minutes |
| Manufacturer | RTM Industries |
| Global Trade Identification Number | 03770019284049 |
| Package Dimensions L x W x H | 12.2 x 7.5 x 2.6 centimetres |
| Package Weight | 0.08 Kilograms |
| Part number | 1-Pack |
| Warranty description | 2 Year Limited Warranty |
| Guaranteed software updates until | unknown |
M**A
Quality
Quality cassette tape BASF formula Legend of a company Expensive but what's the alternative?
J**S
Rtm 90 c. Cassette
Excellent case. And massive inlay for jotting down Ur. Tunes recorded tapes themselves are. Nice clear plastic with strong screws fixing and nice. Big labels. Great value as well for a complete mystery buy. I've never seen before 👌
G**Z
Excellent quality tape
RTMs ferric tapes are made to the same specifications as the old BASF LH, used by recording studios across the world. I’m absolutely delighted with the quality of these cassettes, zero dropouts and excellent frequency response, high output and good noise performance. In my tests with these cassettes, I’m using my Denon DRM 710, 3-head dual capstan machine that also benefits from Dolby HX Pro and adjustable bias. If you are buying RTM tape, you can be assured of a high-quality European made product. This review is written by genuine customer based in South-East London.
9**5
Broadcast quality, as far as cassette could ever be.
Good quality, but the C60 is even better.
O**O
Mwaaaah... the French Cassette Tape has always been celebrated for its excellence...
Much lower noise than any of the other blank tapes I have, and perfect frequency response as far as I'm concerned. The visual design is also fantastic. The only issue I have found is that the cassette itself is prone to receiving scratches - my own player has scored lines in it from every time I have inserted it that I can see when light glints off them. Nevertheless, it's nice to see a high quality product manufactured on this side of the globe, and it's even nicer to listen to!
J**.
A good quality type I tape
As far as new Type I tapes go, these are the best on the market. With Dolby C, these tapes can absolutely sing in a high end deck with even the most demanding recordings. Not a sony metal master, but it's a competent tape and compared to the latest UR (that I had to return as they were borderline unusable), these were worth the money. Do wish there were a bit cheaper.
B**S
cassette
very good
I**E
Not great quality.
Didn’t sound too bad, as good as any basic normal cassette back in the day, but I had some quality issues with 2 of the cassettes. The first one unspooled itself in the machine. I was using a Sony Walkman D6C which is a top notch machine and has never had any issues with chewing up cassettes so I can only presume the cassette itself was at fault. The second cassette I tried has vastly lower output on the left hand channel. Again, I recorded a test tone in my D6C and when played back on another machine there was a clear drop in volume on the left hand channel. It’s a shame as these cassettes looked quite promising but I wouldn’t bother buying them again.
V**O
RTM'S Tapes they pretty good 👍
H**O
Nachdem ich vergeblich versucht habe, preislich vernünftige TDK SA-X oder gleichwertige zu bekommen muss ich sagen, dass die hier die Oberklasse des aktuell erhältlichen Materials im Preis-Leistungs-Verhältnis sind. Im direkten Vergleich mit einer alten TDK oder Sony ist das Grundrauschen etwas höher, aber das liegt am Bias und der Chemie, leider gibt es nagelneue Chrom-Bänder nicht mehr zu kaufen. Gegenüber einer Master-MA von Sony ist die schlechter, aber wer will heute 40.- für ein gebrauchtes Metallband zahlen, insbesondere weil die meisten Decks das gar nicht können. Und das Bandmaterial wird nach 40 Jahren auch nicht besser - also das hier ist die sogar günstige Alternative für Aufnahmen auf guten Decks mit hoher Qualität.
R**S
Casette geef een goed geluid
C**.
C’est génial d’avoir des cassettes neuves !!!!!
F**E
Musicassette a mio parere eccellenti. Sono arrivate ognuna protette da una scatola di cartone. Ho notato subito la qualità delle custodie che sono leggermente più spesse di altre in commercio. Il case è robusto è ben fatto chiuso da 5 viti per un eveltuale smontaggio. Nella parte bassa vi è un rinforzo di plastica nero come guida del nastro che impedisce vibrazioni nella lettura, accorgimento mai visto in altre cassette. Sto duplicando da vinile e il suono è ottimo in tutti i registri, non si nota una minima perdita forse un pochino solo nel registro acuto ma niente di eccessivo! Quello che mi ha colpito maggiormente è la qualità costruttiva. Sono molto soddisfatto e consiglio l`acquisto, restituiscono un suono pulito senza rumori di fondo, anche nel riavvolgimento rapido sono molto silenziose più di altre marche quotate. Che dire ne farò una scorta col tempo!
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