※Please contact us via the transaction message after winning the bid to specify your preference of A or B. We will proceed with shipping arrangements once we confirm your selection. We have sold over 300 line transformers to date, and we are grateful to have received all positive feedback. Regarding line transformers, we primarily sell clone products, but we are confident that we produce items with superior quality in terms of wiring techniques and noise processing methods compared to the original products. Manuals on how to make these are also increasing in sales, but they do not provide accurate cloning and noise processing methods. Therefore, if you are looking for quality that you can use with confidence on-site, please consider using our products. This is a transformer box inspired by Cafe au Lable's Amateras. Although it has a narrow body, its performance is the same as the original size. This is a clone of Cafe au Lable's Amateras0058 (0001). The reason for the parentheses around 0001 is because no performance difference was found between the two products. Therefore, 0058 and 0001 XLR have the same performance. However, you can be assured that the transformer effect is definitely obtained when using dynamic microphones such as SM58. (Do not use phantom power to drive condenser microphones. This may cause a malfunction.) Please refrain from purchasing if you are concerned about minor scratches or blemishes on the handmade product. This is a more compact size of Amateras0058. (※Please note that the recommended input impedance is 1kΩ or less.) ・Case: HAMMOND 1550A (89 x 35 x 30.1) ・OEP transformer ・Wiring material: Oyaide single-core silver 0.5mm ・Solder: SS-47 ・Jacks: Neutrik The above parts will be used, but there may be slight changes in the layout, etc., that do not affect the sound performance. Please understand. If you are concerned about sound quality, please watch the comparison video with the original. https://youtu.be/I2w54vKCMUI There is also a comparison video with Lundahl. Please watch it. YouTube "OEP & Lundahl Transformer 2 Types Comparison" https://youtu.be/pNRHIy1CULg