Warm, rich sounding interconnects?


My system is in flux at the moment with a Wadia Intuition 01 as preamp/amp/DAC bookshelf Tyler speakers and (horror of horrors) an iPhone with an Auris bluetooth connection for the current audio source. Since bluetooth at best sounds somewhat thin and tilted up on higher frequencies, it doesn’t play necessarily well with the Wadia which is great sounding overall but also can be on the revealing side.

I know I should get a better source - but even so I’ll always want the option of wireless in various situations. I’ve owned Purist Audio Museaus’s (rev-c’s) in the past, which would be perfect, but sadly sold them on A-gon some time ago. Those are hard to find and the newer Purist cables are brighter sounding.

So in a nutshell I’m looking for interconnects which will deepen and darken the sound for my current setup - and new/used for under $400. Any ideas?
monsignor
Read Azimov's 'The End of Eternity'. It is all much more complicated than average voter Churchill appears to have thought.
Audioquest Water (or older Columbia) should fit the bill. But if you're talking about the Tyler Taylo Reference monitors, then nothing is going to pull out the bass short of adding a sub or going to bigger speakers (great midrange/treble/soundstage though). 
Fairly recently I sold Pioneer SX838 $319.xx and really wonder how to justify labor and raw material cost to build hook-up wire of matching price vs. restoration service and calibration of Pioneer SX838?

I also wonder what is justification of $30k wire vs. Steinway grand?
Washburn ES335 vs. $300 wire

Does any audiophile know how to count??

Note, I would never rise these questions in 70’s, 80’s when everything was fairly reasonable and matching the quality and beauty of design, but perhaps should some day attend these audiofests with mike and recorder to curiously ask manufacturers how THEY justify.

I also noted that trivial mathematical problems are somehow excluded from school programs and other useful things to life also excluded.
Seems like school is the tool to replace common sense with nonsense to generate ’real democratic’ voters!
I won't disagree with that.
I think, yuppi so-called audiophiles very much  drive this nonsense.
Anyone care for a $3k bottle of French wine?
By the way, my Nak682ZX cassette deck cost about $1650-$1800 in the year 1981. Great deck but might've been overpriced too.
However, I do think that great equipment has the right to cost a lot more than just a good one regardless of labour and material cost.
Custom Paco de Lucia guitars by Conde Hermanos cost  a lot. I heard one of those guitars played by him. Fantastic instrument with incredible power for an acoustic guitar.
$35k wire? They can go..you know what..themselves. $10k wire? Well, I would listen.
It was like that with Harleys. I owned 2 bikes, one used and another I purchased new because it was affordable. Then in the late 90s and 2000’s every Yuppie, businessman, and poseur wanted in and Harley had to step up production. It became a symbol of status and they had no problem paying the inflated prices for a bike plus accessories.
Now a new Harley can cost $30K to $ 35K. And their bikes are now sitting in the garage.