Our Delta Dynamic Master cassettes use refined cobalt ferric mix for a wide dynamic range and low noise.  The tape is the most sought-after standard bias formula for premium voice and music recording.  High praise of the sound quality from all customers according to our statistic.  

Features:

• Type: 5 Screws Type I Normal Bias Master Audio Cassette
• Packaging: No case or label. Cassettes come in 25 pack boxes.

Bulk Loaded audio is custom-loaded, and we do not accept any returns.  No technical data is available for reference, and we cannot guarantee a specific dB or frequency (Hz). We only purchase high-performance ferric oxide material formulated for demanding music applications. It meets all the requirements for music recordings.