Is this suitable for a Denon PMA 1700 Integrated amplifier?
No. The X2 cables are 'figure 8' (IEC C7) connectors. The Denon PMA 1700 takes an IEC C13 or C15 connector (although it has a 2-pin socket).
The correct product is the NRG Y3:
https://www.futureshop.co.uk/audioquest-nrg-y3-mains-power-cable
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