Isolation Feet Upgrade

Happy Holidays!
I recently upgraded my Ayre QB9 to its Twenty status and bought a Bryston BDP Pi. Everything’s sounds good but if I could slightly increase bass and warmth I’d be even happier. My thought is to replace the ASR power cable to a Cullen Crossover II and by adding more silver into the power cord, that I’d increase warmth that way. The second tweak would be to replace the Herbie's Tenderfeet but am not sure what would constitute an upgrade. I have read claims however that certain brand names will increase bass response. I remember the time I replaced the stock feet on my QB9 in 2011 and how surprised I was by the improvement in clarity and detail. Am I just chasing my tail with these tweak notions or can I really tailor my equipment into a slightly more preferable sonic signature. Price point is always a factor.
Any help is greatly appreciated, thanks!

@astolfor thanks for your findings! Towards the end, you cited Townshend and HSR as being comparatively the same. The HSR Vortex footers are twice the price of the Townshend footers so I'm wondering whether you have a preference between those two? Also, would you say that better footers are more critical with heavy components such as amplifiers versus a small DAC?

@goofyfoot in my opinion, the most critical thing to isolate is the turntable, then anything with vacuum tubes (mainly because it helps them to last longer) , then speakers (doing this is like treating the room and your gear everyone benefits), then your choice, as to me isolating solid state DACs, Amps, and preamps is alike power cables and HiFi Ethernet switches and cables. If you want and makes you feel better then do it, but by electrical definition they can't make any difference if they meet the appropriate specs. I buy expensive "HiFi" power cables just because they sure make an esthetics impact but I consciously know that they cant change the sound as they are completely different domains.

What are you trying to improve? What components? 

I do not want to start a war here, if you want to discuss further send me a message please.

I have an Ayre DAC  and an ASR Emitter II Exclusive amplifier using Herbie's Tender-feet and I'm thinking that better feet on those two pieces might render better results. My next upgrade however will be a better power chord for my DAC. As far as my turntable, I'm still modifying it and need to replace the tonearm before anything else.

I would save the money from the power cables and use the Nobsound, and if you do not have your speakers isolated and your turntable then add Nobsound to them too.

You can buy from amazon and if you do not like them send them back. BTW,I have nothing to do with Nobsound beyond that they work so I bought many of them.

If you want to verify on your own, and have an iPhone use Vibration analysis it is the closest to an actual vibrometer you can get without a real one, and it is very good.

Whatever you do, I hope you enjoy your system better.


I am in the USA this week so I can send you the actual LDV numbers but here is