Magnetic Particle: Linear Ferric. TDK AD was a reasonably good type I cassette. It evolved from TDK SD and appreared first around 1977.

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Premium quality normal bias cassette. Ideal for portables and high-energy contemporary music due to its unique high frequency response. Acoustic Dynamic, the successor to the famous Super Dynamic, which delivers clear, crisp, brilliant reproduction of …

2016年2月1日 · Even mid 90's TDK D are excellent with similar performance but, this time, with a flat frequency response. To tell the truth, TDK D was always one of the best of its kind and they never disappointed. Analog nut! This must be another case like Sony UX is for me. I've found TDK AD of the early to mid-80's (1982 I think) to be rather flat and dull.

2023年5月29日 · 感觉这是TDK的AD系列通病，手上有5盘二手的TDK原版AD带，前天录了一盘AD46，虽然录之前查看带基光亮平整，但录完后聆听，单面竟然有四五处不同程度的破音、噼啪声或停顿，拿出来查看带基，竟然出现密密麻麻的麻点或小坑，时间长的近十秒，短的也有两三秒。 判断这些带基上的缺陷都是先天性的，因为整盘带子的带基感觉就跟新的一样。 这种样子只能当废带处理了，后来拿54分钟的银字AD重录，稍微好一些，但单面也还是有两处瞬间的微弱 …

The TDK AD90 TYPE-I Normal Position blank cassette tapes are 90-minute recordable tapes. This specific model, the TDK AD90, was released in 1986 and is still new and sealed, making it a rare find for collectors or enthusiasts of vintage audio technology.

New old stock Lot of 4 TDK AD 90 minute cassette tapes. One is open but I believe it is unused. Stored in climate controlled environment.

2009年2月24日 · AD is a very good Type I, very compatible and easily exploited by most decks. Only black mark is that some of mine have developed drop-outs in areas and they tend to wear faster than the equivalent mid-late 80s Maxell UDI or UDI-S. Having said that, my favourite Type Is are TDK AR and Fuji FRI-S, both from the mid-late 80s. Both superb.

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