※The color of the exterior is not captured well in the photos, so please refer to the Utsusemi Works website. This is a 4.4mm balanced input/output portable amplifier. The listing is for the main unit only (no box or warranty). It was used indoors. There are no operational issues. NR processing was not performed as it was not necessary in my environment. This is a rare edition that was discontinued in a short period due to the discontinuation of the op-amp. It has a clear and very transparent sound, recommended for those who like rock and pop music. I have used Type-L, Sinfonia, Potenza, Pure, Grazioso, and Grande before. Type-L, Sinfonia, and Potenza are of very high quality, and the difference is a matter of preference. Please prepare four AA batteries separately. It will be shipped via Takkyubin Compact. Please understand that I will not negotiate on price. I will block those who still request a price reduction. Please refrain from purchasing if you are overly sensitive. Please consider only if you can conduct a transaction with common sense. I do not wish to do business with those who cannot make immediate payment and provide a receipt evaluation by the next day after arrival. Returns are not accepted. ※It may also be listed on other sites, so please understand that it may be canceled depending on the timing of the sale. Shipping is not available on Wednesdays.