Bottlehead Single Ended eXperimenter's Kit 2.1
Bottlehead Single Ended eXperimenter's Kit 2.1
Amplify Your S.E.X. Life
Buying a pre-made headphone amplifier brings you great sound, but to truly understand the technology and get some homemade satisfaction, it’s time to build your own. Luckily, we’re offering the Bottlehead Single Ended eXperimenter’s Kit 2.1, a fully inclusive do-it-yourself kit that results in a stereo integrated, single-ended triode (SET) amplifier with 2 W of output per channel.
Parallel Universe
The main feature of the amp is the parallel feed output, known for its generally greater power, lower noise, and broader frequency response. As the output transformer is separated into pieces, the effect of the power supply on sound is reduced. The upgraded power supply uses distinct filters for each channel and includes an internal shielding scheme, resulting in a low noise floor with zero feedback.
Self Love
With both low noise and strong output, the S.E.X. amp can drive both speakers and headphones. As every part is customizable and the options are endless, you can easily wire the amp for high efficiency room speakers, low impedance headphones, or really any audio set-up around. A Skill Level 1.5 Kit, you can assemble the Bottlehead S.E.X. in an evening or two with the included instructions and some solder. Should you need any help with your work or looking for inspiration, the vat Bottlehead Forum has more than enough information to keep you satiated. For more information on the specific kit, head over here.
Anything Else?
On this drop, we are only offering the 120 V transformer. Additionally, we are including two kits in the package: the C4S Upgrade Kit and the Output Impedance Switch Kit. The C4S Upgrade Kit gives your S.E.X. a quieter background, higher resolution, and tighter bass. The Output Impedance Switch Kit comes with a pair of PC boards that mount underneath your output transformers. Thanks to their slide switches, you can easily switch the impedance of your transformer without desoldering and reconnecting wires.
Specs
  • Bottlehead Corp
  • 10 x 8 x 0.80 in brushed aluminum chassis plate
  • Pacific Northwest alder wood base kit
  • Gold-plated RCA jacks
  • Color coded binding posts
  • 120 V transformer
  • 1/4 in (6.3 mm) Neutrik headphone jack
  • Fused power entry module that allows IEC terminated power cords
  • Power output: 2 W RMS per channel at 10% THD at 500 Hz
  • Frequency response @ 1 V: -3 dB at 27 Hz - 22 kHz
  • Input sensitivity: 0.62 V RMS
  • Gain: 15 dB @ 1 khz
  • Input impedance: 100 kOhms
Shipping

This drop is exclusive to US customers and will be shipped by Massdrop.

Estimated time until product ships: 8 weeks after the drop end date. These are made to order and may take longer than estimated.

Amplify Your S.E.X. Life
Buying a pre-made headphone amplifier brings you great sound, but to truly understand the technology and get some homemade satisfaction, it’s time to build your own. Luckily, we’re offering the Bottlehead Single Ended eXperimenter’s Kit 2.1, a fully inclusive do-it-yourself kit that results in a stereo integrated, single-ended triode (SET) amplifier with 2 W of output per channel.
Parallel Universe
The main feature of the amp is the parallel feed output, known for its generally greater power, lower noise, and broader frequency response. As the output transformer is separated into pieces, the effect of the power supply on sound is reduced. The upgraded power supply uses distinct filters for each channel and includes an internal shielding scheme, resulting in a low noise floor with zero feedback.
Self Love
With both low noise and strong output, the S.E.X. amp can drive both speakers and headphones. As every part is customizable and the options are endless, you can easily wire the amp for high efficiency room speakers, low impedance headphones, or really any audio set-up around. A Skill Level 1.5 Kit, you can assemble the Bottlehead S.E.X. in an evening or two with the included instructions and some solder. Should you need any help with your work or looking for inspiration, the vat Bottlehead Forum has more than enough information to keep you satiated. For more information on the specific kit, head over here.
Anything Else?
On this drop, we are only offering the 120 V transformer. Additionally, we are including two kits in the package: the C4S Upgrade Kit and the Output Impedance Switch Kit. The C4S Upgrade Kit gives your S.E.X. a quieter background, higher resolution, and tighter bass. The Output Impedance Switch Kit comes with a pair of PC boards that mount underneath your output transformers. Thanks to their slide switches, you can easily switch the impedance of your transformer without desoldering and reconnecting wires.
Specs
  • Bottlehead Corp
  • 10 x 8 x 0.80 in brushed aluminum chassis plate
  • Pacific Northwest alder wood base kit
  • Gold-plated RCA jacks
  • Color coded binding posts
  • 120 V transformer
  • 1/4 in (6.3 mm) Neutrik headphone jack
  • Fused power entry module that allows IEC terminated power cords
  • Power output: 2 W RMS per channel at 10% THD at 500 Hz
  • Frequency response @ 1 V: -3 dB at 27 Hz - 22 kHz
  • Input sensitivity: 0.62 V RMS
  • Gain: 15 dB @ 1 khz
  • Input impedance: 100 kOhms
Shipping

This drop is exclusive to US customers and will be shipped by Massdrop.

Estimated time until product ships: 8 weeks after the drop end date. These are made to order and may take longer than estimated.