call Upscale Audio
Ditto.
Question on PrimaLuna EVO 400 Amp: Fully Balanced (Differential), or No?
I've just taken delivery of new PrimaLuna (separates) EVO 400 amp & pre, and need some informed advice in re: hooking up my single REL S/812 sub. The REL manual shows different connection schemes for Differential (fully balanced), as opposed to standard. I do have balanced (XLR) interconnects from DAC to pre, and from pre to amp, and there's a switch on the back to select for XLR connections, which I've engaged.
I've checked the PrimaLuna owner's manual, and searched online, but I can't find any indication of whether the EVO 400 amp is "Standard" or "Differential" (fully balanced). Does anyone know for sure? The REL cable has 3 terminations, and in standard amps, the black ground wire is connected, whereas in Differential, it hangs loose, or "floats." Any insight on this would be greatly appreciated.
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I have the Evo 300 power amp and I've connected my REL 212SE as shown on the REL website: Although the 300 and 400 have XLR inputs I don't believe they are dual differential designs internally. |
Confirming the above -- I heard back from REL yesterday, after they had reached out to the PrimaLuna Mothership. The EVO 400 is a standard (not Differential) amp, and so -- at least in single sub, non-monoblock (stereo) configurations, the black ground wire is attached to (either) negative / ground binder post. The REL does want the 8 ohm posts, though; Upscale was quire clear on that, and it seems to be working fine.
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