Bottlehead Crack 1.1 Headphone Amplifier
Best rewarding build for discerning headphone audio enthusiasts.
This kit is the ultimate rite of passage for audiophiles who want to build their own tube sound from scratch. You trade the convenience of a pre-assembled unit for a deeply rewarding, hands-on project that delivers a rich, spacious warmth capable of outperforming gear costing significantly more.
$550.00
Who it's for
- Audiophiles seeking a classic tube sound for their high-impedance headphones.
- Hobbyists and aspiring audio engineers who enjoy building their own gear.
- Budget-conscious audiophiles desiring premium tube sound without the premium price.
Who should skip it
- Consumers preferring ready-to-use electronics or lacking soldering experience.
- Headphone users with low-impedance or highly sensitive in-ear monitors.
- Listeners who prefer maintenance-free audio components and consistent performance.
Performance breakdown
High-Impedance Performance
The OTL design creates a perfect synergy with high-impedance dynamic headphones.
DIY Build Experience
Clear instructions make this an accessible and rewarding project for beginners.
Sonic Character
Delivers that classic, lush tube warmth with an expansive, holographic soundstage.
Clarity and Dynamics
The included Speedball upgrade significantly tightens bass and improves transient response.
Component Versatility
Limited to high-impedance loads, making it less ideal for sensitive IEMs.
Aesthetic Appeal
A raw, industrial look that celebrates the beauty of exposed vacuum tubes.
Key Specs
Amplifier Technology
Vacuum Tube
Output Type
OTL (Output Transformerless)
Tube Complement
One 6080, one 12AU7
Output Impedance
120 ohms
Gain
~15dB into a 300 ohm load
Input Impedance
100K ohms
Power Output
~10V into a 300 ohm load
Dimensions
13 in x 7 in x 6 in
Output Type
6.35mm Jack
Form Factor
Desktop
Know before you buy
Still have a question?
Ask Metto anything about the Bottlehead Crack 1.1 Headphone Amplifier before you decide.
