[QUOTE][i]Originally posted by Lt Cdr Data [/i] [B]anyone any exp of the sirius aka gamut?[/B][/QUOTE] Hi Data, I run a D200 (Mk II) in my system. What would you like to know? If you're thinking about the comparisons that some reviewers have made with this amp against valves, I'd add IMO what I think is a clarification of that stance. The GamuT is good at reproducing the trailing edge of the note and portaying harmonic richness, just like an achitypal (sp?) valve amp does. However, the GamUT isn't inherently warm or soft sounding, it is both accurate and musical, but can be pushed in either direction depending upon partnering equipment used with it. If you really want accurarcy with more warmth and organic feeling, then a GamuT with valve pre might well suit the DAC64 better. The GamuT is derived from a studio power amp design, so it is by nature going to be transparent. I don't see why your MF A1000 shouldn't give you the results you're after with the DAC64. IMHO, a look at different speakers would be money better spent, somethiing efficient and old, or maybe a modern Spendor?