Digital Pre-AmplifierIn addition to processing and manipulation of audio signals, digital preamps may also include inputs for different types of digital audio sources, such as USB, optical, and coaxial.FilterBrands All brands NAD SPL Sound Performance Lab 2 ProductsShow:12243672VanTotSort by:Sort byDefaultMost viewedNewest ProductsLowest priceHighest priceName ascendingName descendingAdd to cartLogin for wishlistSale-15%SPL Sound Performance Lab Director MK2 Digital to Analog Converter & Preamplifier$3,458.65$4,069.00Add to cartLogin for wishlistNAD PP4 Digital Phono/USB Preamplifier$279.00