Confused: Should I Upgrade Cables or Amp first?


I currently have very long runs of Audio Art SC-5 speaker cable (about 20 feet) that, due to WAF issues, are routed through holes in the floor, under the house. I use MIT AVT speaker interfaces, in an attempt to compensate for resistance.

Speakers: Silverline 17.5 monitors. Components: modded Jolida JD100 tube cdp and modded Jolida JD302 tube (EL34) integrated. 

I can afford to put $2500 into the system at this point. I could re-route cables through a wall and relocate components into another room, thereby dramatically shortening cable runs to 10-12 feet and enabling bi-wiring. I could also afford to upgrade all cables. OR, I could leave cables alone and upgrade amp.

Which is likely to produce biggest improvement? 
stuartk
Yes-- 213runnin--Jolida has 50 wpc. I'm curious to hear how the Silverlines respond to more power, for one thing. 

TY-jmc-- both amp and cdp were modded by Mitch Singerman who's been Jolida's West Coast repair guy for quite awhile-- he knows the gear inside and out.  I don't recall the specs for the amp mod-- it was 8 years ago or so, and as it's no longer in the Jolida line, there's no description of the mod on the Affordable Audio website. Here is the parts list for the level 1 mod description for the cdp; "Hovland Musicaps for the coupling stage. Auricap and Solen for coupling and bypass. Caddock film resistors. Mills power resistors. International Rectifier Hexfreds".  Pretty sure some of these parts were also used for the integrated mod. The cdp mod was a more (to my ear), dramatic improvement in my system. Very much worth the price! 
I’m with Jmcgrogan2, the system seems well put together. I think $2500 is too much for cables for this system. One idea is to sell the speakers, add the $2500 to the proceeds, and buy a 2nd hand speaker at the next level up in performance. The source and the speakers are usually the most important. If you are happy with your CD player, and the Jolida amp sounds good, perhaps a larger Silverline speaker that has more range such as this one https://www.audiogon.com/listings/full-range-silverline-audio-sonatina-mk-iv-demo-2016-05-10-speaker... is a worthy thought.

Another thought is to focus on the source. You might consider selling the CD player, rip your CDs, go file based and invest in a top quality modern DAC.

$2500 is also a nice budget to get into vinyl. You can spend $2k on hardware and $500 on records and see where that takes you!

i think the cable upgrade idea or the amp upgrade are both worthy ideas, but I think you will get more changes in the source or the speakers. If you do go cables, I would lower the budget and save some cash for the next upgrade down the road. On the amp side, I would probably spend the entire budget, plus the proceeds from selling the Joloda integrated, and look at something like this: https://www.audiogon.com/listings/tube-balanced-audio-technology-bat-vk300x-se-2016-05-08-integrated...

Good luck!
Hope my 2 cents are worth more than just $0.02!!

marktomaras-- thanks for your input. The reason I have monitors is that I don't have the luxury of a dedicated audio space, and as a result, I needed to raise drivers above furniture in the livingroom.  Pardon my ignorance, but would the 50 watt Jolida sufficiently drive the 91db Silverline 3-way floor-standers? RE: source, I can't yet face the prospect of the time and monotony involved in ripping my cds. While I don't have a huge collection, it's definitely not small.  What about adding a DAC, instead?

Stuartk:  I have a Parasound Halo Integrated in my secondary system with Audio Art SC-5 speaker cables.  They are connected to Golden Ear Triton 2 speakers.  I listen to this system 90% of the time because it is in my home office.  It's a great match.

Previously I was using a Rogue Audio Cronus Magnum tube integrated and for my taste, I like the Halo Integrated much better.