Bottlehead Crack 1.1 OTL Headphone Amplifier Kit
The Crack is a legendary OTL (output transformerless) headphone amplifier kit, purpose-built for high-impedance headphones like the Sennheiser HD600 and HD650, as well as AKGs and Beyerdynamics. Its single-ended triode design delivers rich midrange, spacious soundstage, and a uniquely engaging tube character. Designed with first-time builders in mind, the Crack offers a fun, rewarding build experience—and sonic performance that rivals amps several times its price. Add the Speedball to elevate your Crack’s dynamics, clarity, and resolution.
The Crack uses a universal power transformer. International customers will need to supply their own power cord, but the kit can be wired for different voltages using instructions in our detailed manuals.
This product has a universal power transformer and can be used worldwide by following the wiring instructions in the manual. Please note that international customers will need to provide their own power cord.
Our kits do not come with a badge, but you can buy one here. Because of a weird quirk in Shopify's shipping, international customers will need to drop a request in their amp's order notes instead of adding one to cart.
Original: $369.00
-70%$369.00
$110.70Bottlehead Crack 1.1 OTL Headphone Amplifier Kit
The Crack is a legendary OTL (output transformerless) headphone amplifier kit, purpose-built for high-impedance headphones like the Sennheiser HD600 and HD650, as well as AKGs and Beyerdynamics. Its single-ended triode design delivers rich midrange, spacious soundstage, and a uniquely engaging tube character. Designed with first-time builders in mind, the Crack offers a fun, rewarding build experience—and sonic performance that rivals amps several times its price. Add the Speedball to elevate your Crack’s dynamics, clarity, and resolution.
The Crack uses a universal power transformer. International customers will need to supply their own power cord, but the kit can be wired for different voltages using instructions in our detailed manuals.
This product has a universal power transformer and can be used worldwide by following the wiring instructions in the manual. Please note that international customers will need to provide their own power cord.
Our kits do not come with a badge, but you can buy one here. Because of a weird quirk in Shopify's shipping, international customers will need to drop a request in their amp's order notes instead of adding one to cart.
Product Information
Product Information
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Shipping & Returns
Description
The Crack is a legendary OTL (output transformerless) headphone amplifier kit, purpose-built for high-impedance headphones like the Sennheiser HD600 and HD650, as well as AKGs and Beyerdynamics. Its single-ended triode design delivers rich midrange, spacious soundstage, and a uniquely engaging tube character. Designed with first-time builders in mind, the Crack offers a fun, rewarding build experience—and sonic performance that rivals amps several times its price. Add the Speedball to elevate your Crack’s dynamics, clarity, and resolution.
The Crack uses a universal power transformer. International customers will need to supply their own power cord, but the kit can be wired for different voltages using instructions in our detailed manuals.
This product has a universal power transformer and can be used worldwide by following the wiring instructions in the manual. Please note that international customers will need to provide their own power cord.
Our kits do not come with a badge, but you can buy one here. Because of a weird quirk in Shopify's shipping, international customers will need to drop a request in their amp's order notes instead of adding one to cart.
