The ADCOM audiophile NELSON PASS design GFP 555 II preamplifier is a top-of-the-line audio component designed in the USA. With its sleek black design and premium NELSON PASS technology, this preamplifier delivers exceptional sound quality that audiophiles appreciate. Made by ADCOM, known for their high-performance home audio products, the GFP 555 II preamplifier is a reliable and stylish addition to any home audio system.