Bottlehead TwoQuiet Stepped Attenuator Upgrade for Crackatwoa Headphone Amplifier
The TwoQuiet upgrade replaces the Crackatwoa’s stock volume potentiometer with a precision 36-step attenuator, offering ultra-low noise, superior channel balance, and a more refined listening experience. Using high-quality resistors and a dual mono ladder design, the TwoQuiet delivers transparent volume control with consistent left-right tracking across all listening levels.
Whether you’re listening at whisper-quiet volumes or driving your headphones with authority, the TwoQuiet upgrade ensures smoother operation, better imaging, and a tactile, high-end feel that enhances both performance and usability.
Most users can build and install this upgrade in an evening or two.
Pairs well with
Bottlehead TwoQuiet Stepped Attenuator Upgrade for Crackatwoa Headphone Amplifier
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Yes, you can do it!
Bottleheads have been assembling our kits for over thirty years. Every kit includes the parts and components you need to build the kit plus an incredibly detailed manual with step-by-step instructions and close-up photos. Check out this sneak peek into what every manual includes. We've also put together a handy list of the tools you'll need to bring along.
Need some assistance or inspiration? Check our user forums.
Just add tools
Bottlehead kits come complete with everything you need to assemble. We provide the wood base, chassis plate, tubes, hardware, wire, circuit boards, and electronic components. You just provide the tools and solder.
Check out this blog post to see what comes in every kit, and this handy list of tools and equipment you should gather before you begin.
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