Description
TDK SA-90, Type 2 Audio Cassette. High/Chrome Position. Super Avilyn Formulation for Extended Frequency Response. This listing includes a set of articles on issues of tapes and audio recording advise. TDK was founded in Tokyo, Japan, on 7 December 1935 to manufacture the iron-based magnetic material ferrite, which had been recently invented by Yogoro Kato and Takeshi Takei.In 1952 and 1957 they began production of magnetic tapes, with compact cassette tapes following in 1966; it is for these that the company is most widely noted. It’s hard now to imagine how life would be without fast PCs and intuitive operating systems. Even though it was made in the Internet era, this tape predates the release of Windows 98 (imagine that). So we’re back in the territory of Windows 95, and a climate in which most consumers were only just learning what USB was. The computers on many people’s desktops still didn’t feature CD burners, and so there was still a big market for blank audio cassettes. TDK SA CASSETTES REVOLUTION: The TDK SA has been the benchmark for Type II cassettes for many years and was the cassette that deck manufacturers used to calibrate their decks with. No need for biasing, these just sound wonderful in any well maintained deck.Although earlier versions look better and have better shells, we feel this has the best actual tape of any SA in it. Developed when cassette was still the major home recording format, these had to be good. As time went on, the Super Avilyn particles got smaller and peaked with this cassette, which is still 100% TDK. REVIEW: “I have a wide range of musical appreciation as I approach my 40s. Something time has afforded me without significant hearing loss. You can after properly bias adjusting these tapes, drive them all the way to +07 to +10 db and they WONT distort in any way.” FEATURES: Award winning SA sets a new benchmark for high (CrO2) position tapes.Offering faithful reproduction of digital sources. • IEC II/TYPE II Crome Position.• Chrome Alloy provides Extra Wide Dynamic Range.• Improved ultra refined Super Avilyn formulation achieves new heights of magnetic energy.• Widened dynamic range and frequency response for critical recordings.• SP-AR Super Precision Rigid Cassette Mechanism II.• Low noise and high output characteristics.• Suitable for CD, Digital and Analog sources. SPECIFICATIONS: Coercivity: 620 Oe Remanence: 1650 Gauss Squareness Ratio: 0.83 Operating Bias: +1.0dB MOL 315Hz: +5.0dB MOL 10kHz: -6.5dB Sensitivity at 315Hz: +1.0dB Sensitivity at 3.15kHz: 0.0dB Sensitivity at 10kHz: +1.0dB Sensitivity at 16kHz: +3.0dB Bias Noise: -60.5dB Dynamic Range: 65.5dB INCLUDED with your AUDIO CASSETTE Purchase: • A rare copy of the 1988 AUDIO Magazine article comparing 88 tapes (PDF).• A super rare copy of the 1983 High Fidelity Magazine - SPECIAL TAPE ISSUE (PDF).• A super rare copy of the 1987 High Fidelity Magazine - 31 Tapes Tested (PDF).• A SUPER COMPLETE TAPE RECORDING & Buying Guide from Stereo Review (PDF - 1982).• A copy of Stereo Review, Issue March 1989 - The Tape Recording Special.• A copy of AUDIO Magazine, September 1981 - Latest Tapes Tested + Cassette Shell Mechanics. • TDK Audio Cassettes Data Sheets & Product Guide.• SONY Audio Cassettes Data Sheets & Product Guide.• Tips & Tricks for the best analogue recordings (information gathered in the last 2 decades / PDF). NOTES & CONDITION: This tape is in pristine condition. Recorded only once, then properly stored. Tape, case and inner sheet look solid, but the case has some scratches. I tested its recording capabilities and the tape has performed as when it was new (tested using a Pioneer Elite CT-7). Please see the photos to realize the excellent shape of the listed item. This chrome tape from Sony belongs to my personal collection. It has been kept in a controlled environment free of dust, sunlight or magnetic fields. TYPE II / More About Chrome Position Tapes: The Type II high bias audio cassette is actually much older a development than many people realize. The rise of the Type II tape is generally associated with the 1980s, but in fact, it was introduced, with a chromium dioxide (CrO2) tape formulation, at the dawn of the 1970s. Chrome tapes were, technically, a big advancement from the start. Du Pont’s chromium dioxide formulation gave an undeniable increase in high frequency response over the often rather muffled tone of the existing Type I ferric cassette. This meant much better definition – a major improvement in fidelity, and an ability to preserve all the zing and sparkle at the treble end of the original sound. CASSETTES in the DIGITAL AGE: Why are groups of people taking an increasing interest in audio cassettes as a means to preserve new sound recordings? It’s generally harder, today, to appreciate the nuances of sound reproduction, because in many ways, the typical sound delivery system has gone backwards. Indeed, even the digital files themselves – MP3s or other compressed options, are simplified to facilitate better storage, and that compromises the quality. Worst of all, qualitative degradation in digital media is much less attractive than in analogue media such as tape. The digital music reproduction we hear today is often way less stimulating and pleasurable a listening experience than we might have gained from an audio cassette and hi-fi system thirty years ago. Additionally, cassettes colour a recording. The good ones add a sort of audible sugar, and every different product produces a different rendition of a sound. Us humans thrive on variety, and the nuances, the fluctuations, that audio cassettes add to our listening experience, accordingly have great value. Even though some of the nuances register subconsciously, we do miss them when we switch to digital media. PHOTOS & DESIGN on my listings are original: I always strive to write a careful and comprehensive description of the overall item’s condition complemented with technical data. Please note that I have invested considerable time designing presentation-style photo-comps which include customer friendly close-ups and information providing you with an in-depth product rendition. The photos used represent the actual item listed. I SHIP WORLDWIDE. The product ships in a custom-made packaging featuring a double layering system to protect the contents. Happy eBaying!
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