The Meier Audio Stage DAC is the most customizable DAC Meier Audio ever did. No cosmetic or functional faults. 600€ when new. You can adjust: 1. Puse response 2. OverSampling factor 3. Crossfeed for headphones and speakers 3.1. Crossfeed delay 3.2. Crossfeed intensity 4. Tonal balance (subtle bass boost). Inputs: optical, 2 x SPDIF RCA, USB Outputs: one fixed (DAC mode), one with a preamp (with two levels of gain for super low noise). The price does not include shipping or PayPal fees.