Compact audio cassette tape digitisation at Oxford Duplication Centre
AUDIO PRESERVATION

Compact Audio Cassette Digitisation

Professional transfer of compact cassettes, microcassettes, dictaphone tapes and related audio formats to high-quality digital files.

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Family • Personal • Heritage Collections

Preserve your cassette recordings before the tape deteriorates

Compact cassettes can contain irreplaceable family recordings, interviews, music, lectures, oral histories and personal memories. We carefully transfer your tapes and create digital files that are easier to access, share and preserve.

Digital output options: WAV • BWF • AIFF • MP3 • CD. Archive transfers can be supplied at up to 24-bit / 192 kHz where appropriate.

Compact cassette family

Different compact cassette formats

The term “cassette” covers several related formats and recording systems. The physical cassette, tape formulation, recording mode and intended equipment can all affect the transfer process.

Compact audio cassette
Most common format

Compact Cassette

The standard Philips Compact Cassette used for music, home recordings, interviews, spoken word and personal archives.

C60 C90 and C120 compact cassette recording lengths
Recording length

C60, C90 & C120

Common Compact Cassette playing times. Longer tapes such as C120 use thinner tape and can require particularly careful handling.

Type I ferric normal bias compact cassette
Tape formulation

Type I — Normal Bias

Ferric tape, the most widely encountered Compact Cassette formulation. Found across domestic music, voice and home-recording collections.

Type II chrome high bias compact cassette
Tape formulation

Type II — Chrome / High Bias

Higher-performance tape used for music and higher-quality recordings. Often marked Chrome, CrO₂ or High Bias.

Type III ferrichrome compact cassette
Specialist formulation

Type III — Ferrichrome

An early dual-layer cassette formulation. Less common today, but important when working with historic or specialist collections.

Type IV metal compact cassette
High-performance tape

Type IV — Metal

Metal-particle tape designed for high-quality recording. These cassettes can be found in premium music and enthusiast collections.

Microcassette audio tapes
Miniature cassette

Microcassette

Small-format magnetic cassettes commonly used in dictation machines, compact recorders and personal voice-recording equipment.

Dictaphone and voice recorder cassette
Speech & dictation

Dictaphone & Steno Tapes

Voice-recording formats used for dictation, interviews, meetings and office records. The recorder and cassette type can vary considerably.

DAT digital audio cassette tape
Digital tape

DAT — Digital Audio Tape

A compact digital tape format used extensively for professional, broadcast, music and archival recordings. Transfer requires compatible DAT equipment.

Related cassette-based formats

Other audio tape formats we can handle

Some collections contain a mixture of domestic Compact Cassettes and professional or specialist cassette-based media.

Careful handling

Why cassette condition matters

Magnetic tape is vulnerable to age, contamination, mechanical problems and deterioration. A cassette may look perfectly normal while the tape, shell, pressure pad or internal mechanism has become fragile.

  • We assess tapes before transfer.
  • We use appropriate playback equipment for the format.
  • Problem tapes can be flagged before digitisation.
  • Digital files can be supplied for listening, sharing and preservation.
Important: Please do not throw away the original cassette after transfer. The original is the source object and should be retained as part of the archive where possible.
Digital preservation

From family memories to archival collections

We work with individual family recordings as well as larger collections containing interviews, oral histories, lectures, music and historic sound recordings.

For important material, we can provide high-quality WAV/BWF preservation files alongside convenient MP3 access copies, making the recordings easier to use while retaining a high-quality master.

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Not sure what you have?

Send us a photograph of your cassette

If you are unsure whether your tape is a standard Compact Cassette, Microcassette, Dictaphone format, DAT or another specialist format, send us a photograph and we can help identify it.

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