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Audio Grade Capacitors | ERSE
https://www.erseaudio.com/Products/Capacitors
Premium Audio Grade Capacitors – Pulse X – PEx – Polypropylene – Mylar – Polyester – Caps ERSE Audio Grade Capacitors including polypropylene and mylar are great for all audio and general electrical applications.
Polyester Capacitor: Mylar Film PET » Electronics Notes
https://www.electronics-notes.com/articles/electronic_components/capacitors/polyester.php
Power supplies where the very high capacitance levels of electrolytic capacitors are not needed. Audio applications; Polyester capacitors are often regarded as good general purpose capacitors. Although they cannot provide a high level of tolerance and accuracy, they can be used in many other applications offering a good levels of volumetric capacitance.
Audio Grade PEx Polyester Mylar Capacitors | ERSE
https://www.erseaudio.com/Products/PEx
Audio Tech Center ERSE's PEx Metallized Polyester Film Capacitors are an excellent choice for a wide range of electrical applications. One of the most important features of a quality film capacitor is the purity of the film.
Audiophile Grade Capacitors
http://aeaaudio.com/audiophile-quality-capacitors-going-beyond-the-simple-re-cap/
The best capacitor types for audio circuits are polystyrene and polypropylene. Polystyrene is the first choice, but are only available in values up to .001 uF. Above that value, polypropylene is the type of choice, with nearly the same qualities of dissipation factor (DF) and dielectric absorption (DA) as polystyrene (these are the two capacitor “qualities” that most …
Audio-optimized Film Capacitors - Audio Capacitors ...
https://www.electrocube.com/pages/audio-optimized-film-capacitors
916D Series – Metallized Polypropylene Audio Capacitors 967D Series – Polypropylene and Foil Audio Capacitor. Retro/Vintage Design. Type AM Series – Paper (Kraft) and Foil Audio Capacitors Type PM Series – Polyester (Mylar) and Foil Audio Capacitors Type MF Series – Polyester (Mylar) and Foil Audio Capacitors
Audio Grade Capacitors: Technology and Applications
https://passive-components.eu/audio-grade-capacitors-technology-and-applications/
The dielectrics that are commonly used in the construction of audio grade film capacitors for use in the signal path include polyester, polypropylene, polystyrene, and polyphenylene sulfide. Capacitors for use in pre-amplifiers, digital-to-analog converters, analog-to-digital transducers, and similar applications are collectively categorized as functional tasks …
Polyester Capacitors - Learning about Electronics
http://www.learningaboutelectronics.com/Articles/Polyester-capacitors
Polyester capacitors are capacitors composed of metal plates with polyester film between them, or a metallised film is deposited on the insulator. Polyester capacitors are available in the range 1nF to 15µF, and with working voltages from 50V to 1500V. They come with the tolerance ranges of 5%, 10%, and 20%. They have a high temperature coefficient.
Measured Differences Between Capacitors for Audio Applications
http://conradhoffman.com/cap_measurements_100606.html
If nothing else, this may explain the consistent dislike for polyester capacitors in the high end audio community. As for the rest, I have to wonder if there's a preference for a non-zero amount of 3rd harmonic distortion, and that possibly "cap-rolling" is an attempt to hit a specific preference.
Best capacitors for Audio?... | diyAudio
https://www.diyaudio.com/community/threads/best-capacitors-for-audio.49135/
Polyester is a polar dielectric, meaning within the dielectric exist permanently charged electric dipoles. These dipoles create a frequency dependent loss, similar to magnetic hysteresis, that reaches into audio frequencies and, IME, creates a subjective veiling, but YMMV.
Film Capacitor materials | diyAudio
https://www.diyaudio.com/community/threads/film-capacitor-materials.124370/
These above are Audio quality for signal coupling. What we should go for.-----4. Polyester. Good for op amp power supply pin bypassing. Usually 100nF. And other use in amplifiers, where not directly signal travels.-----If you search forum., you will find plenty of good topics about Audio Quality capacitors.
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