This Sonic Frontiers SFD-2 Tube DAC is a rare gem that audiophiles would love to have in their collection. Its balanced output and compatibility with CD playable media format make it a great addition to any home audio system. The model is Sonic Frontiers SFD-2, manufactured in Canada under the brand Sonic Frontiers. The audio outputs include Stereo L/R RCA and XLR. This DAC is highly regarded as it was awarded the Stereophile Class A (1996) certification. It belongs to the category of CD Players & Recorders under Consumer Electronics, TV, Video & Home Audio, and Home Audio Components.A small mark on the right side of the faceplate.unit tested and works great.sounds fantastic.LIST PRICE BACK IN 1996 was $4,695.00