AC Power cable for ARC Ref 5 se.

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 I have not tried Audioquest in years. Though I do use their HDMI and Ethernet cables in my network with great results. I have tried Nordost Heimdall 2 and Kubala Sosna, I forget the name but it was the black one. My Ancient ARC Litz cable was better than either of those. Really the Sane Line was the first cable I found that was significantly better.

I have only tried the Shunyata Black Mamba HC and Alpha HC. I don't have a Shunyata Dealer near me. I have heard that their new Delta cable is excellent, as good as my Alpha. Go with the HC (high current) version of whatever cable you choose. The ARC Ref 5se and Ref 2se use 20 amp power cords. While my Ref CD7 has the normal 15 amp power cord.

lostbears.  How was the Shunyata Black Mamba HC PC 

I am using a Cardas Clear Beyond with great results. I started with a Clear, but moved up to the Clear Beyond. But you should try the Usedcable.com lending library. For the time being I am using a Running Springs power conditioner which comes with Cardas power cords. I have also changed the original RS power cord to a Clear Beyond, so that may add to the “synergy” of my set up. Again, I recommend trying the lendi library at usedcable.com

 Actually very good. The main reason I upgraded was because I upgraded my preamp. My old LS25 mk2 used a 15 amp power cord. The Ref 5se needs a 20 amp. So I needed a new power cord.  I chose to go with the Ztron Alpha HC after talking with Grant from Shunyata. The Zitron Alpha HC is excellent. Better than the Black Mamba. It is even better than the Sigma Analog cable. I have since upgraded all my power cables to Zitron Alpha HC cables. I have heard that the new Delta is as good as the Alpha but I have not tried one.

 The Black Mamba has a cult following so some people ask a lot for them. I would not pay over $350 for the HC. I paid $325 each for the 2 I had. If it were me I would hold out for an Alpha HC. Unless you have a Shunyata dealer near yu and can demo the Delta.

 You can search Hifishark.com and have them send you email alerts. It won't hurt to get the feel of the Ref 5se with the stock cord. Then you can more easily appreciate the difference that the Alpha makes.