ABX testing with AQ Dragon power cords


I was talking to my dealer about how good the system sounds that he sold me. I mentioned that I had tried some new speaker/interconnect cables from a local amp/cable manufacturer & both I and the company boss agreed that there was little discernible sound difference between his cables & mine. He couldn’t understand why. He also told me that my room acoustics were amazing, top notch. He’d like me to bring my cables (& his) to his listening room & we’ll compare there. That’s for next week.

My dealer said that in his 40 years this has never happened & he was ready to rise to the challenge. He said he would send me a couple of AQ Hurricane power cords to try on my amp/pre and I’d be amazed. I said why bother, send some Dragons. He told me to connect them to my amp & preamp & I should be amazed within 10 seconds of comparing. Today I received a Dragon HC & Source power cord. I listened to some music I’m very familiar with through my Lumin T3 playing FLAC files from the attached USB. Then I swapped the amp & pre to the Dragons and listened to the same songs. No difference that I could tell. So I redid the test, one song at a time, switching back & forth. Still no difference.

I invited two neighbors over (separately) and asked them to look at my FLAC library & choose a song that they knew well. I played that for them with both sets of power cords. One said he couldn’t hear any difference between the two. The other said that one (mine) sounded like it had slightly more treble, the other (Dragon) sounded like more bass. I played a third version (turned out it was mine but he didn’t know) and he said that was the bass version. He was wrong & admitted that the differences were so small that he really couldn’t choose between the two.

I called my dealer & he asked if the difference was earth shattering. I told him no & he asked how that was possible when he just sent similar cables to another customer last week with a similarly priced system as mine & that guy said that the SQ improved 50% and was ecstatic. I said that that guy must have decided already that he was going to buy them and determined that for that money they must improve the sound. My dealer said that either my ears are those a near dead 95 year old or his last 40 years experience have been a sham. I suggested that he was selling & demoing a product to people that had a propensity to believe it worked & therefore it worked for them. I offered to have him drive here (4 hour drive) and listen for himself & I’ll swap cables while his mind is blown. We may get there yet.

I hesitate to post a photo of my listening room as experience tells me that those that are strong proponents of cables will pick it apart and blame a myriad of other crap  rather than recognizing that the 3 of us heard no difference on a high resolving system situated in a room would good acoustics... but here goes.

 

McIntosh MC462/C2700, Pure Fidelity Harmony TT, Gold Note PH-10/PSU-10 phono stage, Lumin T3/Sbooster, Sonus Faber Amati G5 speakers, Sonus Faber Gravis V sub.

dwcda

There is such a great opportunity for cable manufacturers to demonstrate that their products make a difference by showing how they result in measurable signal changes for DACs, streamers, amps, AVRs, subs, etc. This doesn't even require ABX testing but just measurements/nulling with verification from 3rd parties.

It would be a game changer that would reset the discussion from subjective opinions crowded by biases to believable outcomes! What a great opportunity that would have enormous marketing consequences to their business models.

I (still) look forward to reading those reports.

Yes, of course you're right. You're always right.

It is easy to be "right" when simple matters of electronic design are misunderstood.  The notion that a piece of audio gear needs a specific power cord to sound well means that the device is broken.  Not that there is merit in said cord.  And that is if you can, with ears alone, tell the difference.  In absence of that, you have to go by the simple fact that every piece of audio gear assumes dirty power coming in.  That power is converted to DC and in the process, heavily filtered.  That leaves nothing for the power cord to do than deliver the required current.  This is why measurements show no difference with any of these power tweaks.  They can't affect a change.  Here is a short 5 minute video related to this:

 

 

 

@amir_asr 

"by the simple fact that every piece of audio gear assumes dirty power coming in.  That power is converted to DC and in the process, heavily filtered.  That leaves nothing for the power cord to do than deliver the required current.This is why measurements show no difference with any of these power tweaks."

Absolutely true!! An EMI filter is placed at the power entry of point of the audio equipment so filtration through the x/y capacitors/common mode choke EMI combined with galvanic isolation of the transformer should be able to eliminate unwanted signal noise completely. That's why you don't need any power conditioner either to condition the power line from the wall. Stupidly expensive power cables/conditioners are a good example of this so called S.O. industry. Thank you Amir I love your Youtube channel and ASR.com

 

 

 

Very insightful.  Why shouldn't you be thoroughly believed.  The proof is in the pudding!!!  Either there's a discernible difference or there's not.  No rocket science involved here.  Hopefully, the AQ dealer will give an unbiased assessment, as well.  I use AQ Hurricane HC PC on my power conditioner, an AQ Firebird Source PC on my DAC and AQ Thunderbird XLR interconnects in my system and they sound superb.  I also use an JPS Labs Aluminata PC on my integrated amp and Shunyata Research Sigma ethernet cables.  The mix of different brands of cables in my system makes for an incredible sound.  However, I must admit, I'm now very curious about Mogami cables.