I don't want to be a killjoy, but I think you should consider whether a $1K power cord is the best use of your funds, especially when you consider that your speakers are $3K, your amp is $3K, and your source is $2.5K.
To be clear, I'm NOT criticizing your equipment, which from what I can tell, is well designed and well regarded. I'm merely suggesting that there are other ways to allocate your resources that may be more likely to yield the results you're looking for.
I'm not trying to ignite a debate about whether expensive power cords are effective or worth the money. I've owned several power cords that are more than $1K, and numerous power cords that are considerably less expensive. So I'm not merely speculating when I say that the improvements I've heard from expensive (and highly regarded) power cords are smaller than the improvements I've heard from other tweaks, many of which can affect the specific characteristics you mentioned in the OP, namely "bass slam," "openness," and "liquidity." For example, you could...
1. Install better Romex for your dedicated line. For example, VH Audio's 10 gauge cryo'd Romex. IME, this can improve the system's "bass slam."
2. Change the balance of shielded and unshielded cables. In my system, the best results were achieved from shielded power cords and shielded digital interconnects, but unshielded analog interconnects and unshielded speaker cables. That may not be the best approach for your system, but IME, finding the right balance between shielded and unshielded cables can improve the system's "openness."
3. Reduce the effects of EMI and RFI in the system. There are a great number of ways to accomplish this, many of which are discussed in this thread. IME, reducing EMI/RFI can improve the system's "liquidity."
There are more approaches to achieving the results you mentioned. Happy to discuss if you're interested. If, however, you want to stick with a new power cord, then feel free to ignore this post. You should of course spend your money however you like.
Bryon
To be clear, I'm NOT criticizing your equipment, which from what I can tell, is well designed and well regarded. I'm merely suggesting that there are other ways to allocate your resources that may be more likely to yield the results you're looking for.
I'm not trying to ignite a debate about whether expensive power cords are effective or worth the money. I've owned several power cords that are more than $1K, and numerous power cords that are considerably less expensive. So I'm not merely speculating when I say that the improvements I've heard from expensive (and highly regarded) power cords are smaller than the improvements I've heard from other tweaks, many of which can affect the specific characteristics you mentioned in the OP, namely "bass slam," "openness," and "liquidity." For example, you could...
1. Install better Romex for your dedicated line. For example, VH Audio's 10 gauge cryo'd Romex. IME, this can improve the system's "bass slam."
2. Change the balance of shielded and unshielded cables. In my system, the best results were achieved from shielded power cords and shielded digital interconnects, but unshielded analog interconnects and unshielded speaker cables. That may not be the best approach for your system, but IME, finding the right balance between shielded and unshielded cables can improve the system's "openness."
3. Reduce the effects of EMI and RFI in the system. There are a great number of ways to accomplish this, many of which are discussed in this thread. IME, reducing EMI/RFI can improve the system's "liquidity."
There are more approaches to achieving the results you mentioned. Happy to discuss if you're interested. If, however, you want to stick with a new power cord, then feel free to ignore this post. You should of course spend your money however you like.
Bryon