
Built To Order
Every component is skillfully crafted by one set of hands


Point to Point Wiring
No plastic connectors, no mass produced circuitry, every connection is directly soldered

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Read my impressions on the C312 preamplifier!
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On The Bench / Completed Projects
Read ArticlesSee what is currently in the shop for repair or modification and follow along for before and after photos!
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Repairs / Modification / Service
Service RequestsQUARK Audio started as a vintage audio repair business and it still proudly offers these services to the public.
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Schedule a Demo
Request A DemoThe C312 preamplifier with optional SP CP36 is available for demo in my personal system as well as the HeeTarChee Funky Series integrated amplifier with FCF1.
The Home of Made to Order Audio - A System Built for You
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Customize Your Audio Experience
Made for YouThere are many benefits to "Made to Order" components compared to mass market
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Products that are Artistically and Musically Expressive
More InformationSometimes different really is better. Explore some of the benefits of Angela-Gilbert Yeung's unique build style
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Angela-Gilbert Yeung
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QUARK Audio
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Musica Bella
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Outstanding service | Unique Designs | Industry expertise
Components
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Integrated Amplifiers
An integrated amplifier combines both the preamplifier and power amplifier into a...
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Preamplifiers
The preamplifier is the heart and controller of your audio system. All...
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Power Amplifiers
The power amplifier converts voltage to current in order to drive your...
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Digital To Analog Converters
Regardless of your digital source, that signal of 1s and 0s needs...
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Phono Preamplifiers
The signal coming from the cartridge on a turntable is often thousands...
System Tuning and Modifications
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Repairs / Modifications
QUARK Audio started as a vintage audio repair business and it still...
Capacitor Packs
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FCF Capacitor Packs
Requires a FCF jack for use of this plug and play upgrade. What...
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SP Capacitor Packs
Requires a SP cap pack jack for use of this plug and...
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SPF Capacitor Packs
The SPF capacitor packs combine both the SP and FCF into a...
AC Filtration and Power Supplies
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AC Filters and Conditioners
Even with a dedicated line for your stereo system, our AC mains...
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Subcribe to Angela-Gilbert Yeung on Youtube
YoutubeFollow along for updates on new prototypes, experiments and upgrades, as well as useful advice for your system
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Subscribe to my Youtube!
Modest Midwest AudiophileThis is my personal channel where I will be posting updates on what I am working on, or currently listening to.
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Modest Midwest Audiophile
Read nowThis is where I share my personal thoughts on the industry, equipment reviews, and personal projects
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Follow QUARK on Facebook!
Follow the page for weekly updates of what's on the bench, or current projects