Sunfire Cinema Grand Signature Series I &II Amps


How can I tell the difference between the Signature Series I(405w/chan)and Series II(425w/chan)by looking at it?If it's the Architech's Choice model(17"face) will it say so on the faceplate?
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I'm no expert, but I think the signature series actually has Bob Carver's signature on the bottom left of the faceplate. Hope this helps.