Awesome, thanks for setting my creative juices on fire.
I want a custom rack and do not want to pay a ridiculous amount of money for it. I was a Toolmaker many, many years ago so making something similar shouldn’t be too difficult for me.
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For me, yep, it works. Also, gets them off the ground.
That’s my take, I’m sure others will have their opinion also 
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I don’t think you’re reading the room, here.
These guys are, in their way, applauding your sensibility in your choice of accessories. They aren’t laughing at you; they’re trying to laugh with you.
Ah! That helps and a nicer explanation.
Reading a room of txt on the internet is not my strong suit.
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Wow! I can’t afford enough cable to drive 1 speaker……£10k per metre 
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Incredible, isn’t it? There’s a fool for everything. See this -
He’s convinced me, so that’s a different matter then, £10K+ per channel for some “extra blackness” has gotta be worth it, hasn’t it 
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Peeps gonna hate me for this. Mad scientist and all that…
Air dielectric will reduce the cable capacitance, but it’s so small in comparison to the speaker/crossover capacitance and overall impedance that it makes no audible difference.
Here’s the cable connecting one of my AHB2s to it’s respective speaker and it’s a worst possible case as the cable has two runs, one to each half of the crossover, i.e. it’s bi-wired. Not for any other reason than that I could. Let’s not get into that argument…
356.6 pF - that’s 356.6 x 10^-12 F, or 3.566 x 10^-10 F
Here’s the crossover for the speaker:
Let’s ignore the capacitors in the tweeter circuit and focus on the woofer bypass cap, C12, which is 12uF, because that’s in parallel with the amplifier’s outputs.
So we have 356.6 pF in parallel with 12 uF. Capacitance is arithmetically additive in parallel, so we have a total capacitance of 12.0003566 uF, or an increase of 0.0029717 %.
The air-gapped cable above would achieve a 2.5 times reduction in capacitance due to it’s air dielectric. My cables are polyethylene insulated which has a dielectric constant of 2.5 relative to air and there would be a further reduction becuase of the increased spacing of the conductors. Capacitance drops as you separate the conductors. That’s why capacitors have a very thin film of insulator between them. So all in, you might get down to maybe 30 pF.
In terms of effect on the woofer output at the crossover frequency, it’s 0.000129dB - that’s assuming they get down to zero capacitance, which they won’t, but play along, I’m giving them every advantage I can. At the very, very best, humans can detect a 0.2 - 0.3 dB difference in sound between two sources. This is 1550 times lower than the threshold of perceptible difference.
In short, no one can hear the difference.
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I wonder what the capacitance of my head is , I only use headphones.
I remember now my head is dense 
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But are you a dielectric or a conductor? 
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No I am not a conductor, I just sing along 
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Well played sir, well played…
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This is the right place. 
As the physicist Wolfgang Pauli used to say, not only is this not right, it’s not even wrong.
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Thanks for the feedback! Much appreciated!
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I did the same… 2 months ago an impulse, not HPA4 but LA4 as I never use headphones. Next I’ll need a new dac to upgrade the CA 200M, DAC3 would be on the same page with the LA4. Did you match HPA with another dac? Are u ok with DAC3? AHB2s are also a dream
Thanks
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Easier to vacuum.
I haven’t used the HPA4 with any other DACs. The DAC3 is superb. Textbook performance and it integrates with the HPA4 (and presumably the LA4) with the remote. HPA4 shows the DAC3 input selection when you use the remote:
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Thanks
I have read that they integrate, and also you can use a single remote, but for the moment I do not have multiple digital sources yet, maybe a cd transport in the future. That was the reason for a preamp, a future TT, and the reviews for LA4/HPA4 volume control over all-in-one Dacs.
Thanks, as soon as my wallet says yes I’ll have a try with DAC3
I am now bypassing the gain knob and reduced output on my Hifi Rose RS150B to 1,000mv. Perfect match with the amps and to me it actually sounds better.
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