Utsusemi-Works primarily manufactures and sells portable balanced headphone amplifiers.
Utsusemi-Works has achieved a cumulative total shipment of 800 units as of October 2024! Also, as of November 8, 2024, we have incorporated and become Utsusemi-Works Corporation. This is all thanks to you. We are truly, truly grateful!!!
2025.3.2 Update All of our amplifiers shipped from March onwards will have the external noise reduction function ‘NR’ (an abbreviation for Noise Reduction) added. NR is a function that greatly reduces the contamination of radiation noise emitted from smartphones, as well as communication equipment in stations and on the street. This will make the listening environment more comfortable for users. Please note that the NR addition service for products that have already been sold is only available in Japan.
2025.1.2 Update An explanation of Immersion has been added to the Potenza series. - The name of Potenza Classical has been changed to ‘Classical’. Please note that there are no other changes other than the name.
2025.1.1 Update ** EARPHONES TIGER Classical can now be purchased on the direct sales site - EARPHONES TIGER Classical has also been added to the options on the order form, so it can now be purchased as part of a bundle.**
2024.12.29 Update The anodised FP product was not produced successfully at the subcontracting factory, and after the initial order was shipped, the stock ran out. The next shipment is scheduled for February or later. We apologise for the inconvenience.
Updated December 1, 2024
Updated November 5, 2025
Although SOUND TIGER Potenza was just released in June 2024, we must discontinue it due to the discontinuation of the operational amplifier used. As replacing the discontinued op-amp with another would not achieve the same sound, we ask for your understanding.
We will continue to focus on creating products that you can enjoy.
Click on the images below for details on each product