Both units are complete with 2 year Sennheiser warranty.

Sennheiser HDVD800 Headphone Amplifier

The Sennheiser HDVD 800 digital headphone amp is an Sennheiser Club Orpheus Logo Banneraudiophile's dream, providing unparalleled levels of clarity and performance to high-end audio sources. Ideally paired with Sennheiser's HD or IE series of high-end headphones, the close synergistic design delivers authentic sound and a revolution in acoustic amplification which will make you believe you are sat directly in front of your audio source...