Reference Vacuum-tube line preamplifier from Serbian NAT, a combination of tube reference amplification and an excellent remote controlled user interface. Full dual mono and zero feedback, high quality parts (Vishay and Holco resistors), remote controlled volume with a resistor network, built as a tank.

Six inputs, which can be used single-ended and balanced. Including original shipping crate and metal remote. Newprice: 7.990 euro, now available for 1.990 euro.

Stereophile review by Robert J. Reina:

“…Concluding Among today’s expensive tube preamps, so many are so nearly flawless that it’s difficult for a relative newcomer to come up with a creative and cost-competitive design that will cause audiophiles to take notice—but NAT Audio has done so with the remarkable Symmetrical. Anyone who can afford to spend $8000 on a new line stage should give this baby a listen. Every minute I spent playing music through this gem was a revealing and enjoyable experience. In the Symmetrical, NAT has a real winner….”