No. That's not so simple. I read things herer or there about the fact the hex is "a league above" the Octave. I'd prefer to judge it by myself and I'm open to other opinions . One more point is that the Hex can't be used with both XLR and RCA outputs if I'm not wrong. So I'm not so convinced Thks for the very precious Input mate. I heard briefly an Auralic Ark mx+ and found some similarities with Metrum sound but I can't make my mind with only a few minutes of listening. I'm in a kind of dead-end with the DAC and my whole system. Obviously it sounds as good as i've always expected and I listen hours and hours of music with great pleasure but you know the game.... Purrin's hyped me with the Stratus but I'm not convinced without give it a try myself. For the DAC , I don't what could be a real upgrade. I bought my Octave for 400€ and it was the more obvious upgrade I heard in my system. The Sonett is more ... inconspicuous? Octave & Sonett are Yin and Yang in my system. so i'm a bit reluctant to spend $$$$ for an hypothetic upgrade in my HD800 rig . Its only a HD800 after all and the budget for upgrade is close to a full stax rig. Moreover with the upgrade budget, Ic could build a extremely good complete system for HE-6 or LCD3 or whatsoever ... I'm in a crossroad.