what will make the greatest differance in sound.


I can only replace one item at this time. My system consists of Martin Logan Prodigy speakers, ML 336, Monster 2.4 speaker cables, Magnum Dynalab Tuner, Monster interconnects, arc LS1 preamp, California Audio Labs icon/mkii cd player. Feed-back from an earlier forum suggested I replace the preamp, cables and cd player. But which one first? I am considering a ML preamp 380s at some point, would like to know if this will improve the currant configuration and sound?
electrostaticman
I agree. Dump the arc but also the ML 336. There's much better out there for less $.

There is currently a used McCormack DNA-2 Rev A amp for sale in audiogon.com for $4200. An amp that few solid state amps can come close to. And ML's are not among them.

-IMO
I agree with the pre-amp, but I just can't understand with your list of components how the ML 336 could be a weak spot? You would just be exchanging one excellent amp for another. At their performance level it really comes down to personal taste, no one is really right or wrong.
Your on the right path...at some point garbage in gargage out...so I'd vote to start at the source. For the money, you CAL Icon is really good, I used to have one. But your speakers and amp are in a totally different league. One good option, if you are running mostly digital, is to go with a ML CD player. Sell the ARC and CAL, buy a 39 or 390s. Then, work on your cables, interconnect first, then speaker...

IMO...
Going from a ARC to a ML 380S pre-amp should certainly make your system sound different, but whether it's better or not would be strictly a matter of (your) personal preference, and of course only you can decide that. Finding ways to audition such expensive equipment (in home) as the 380S can be difficult.

Years ago Monster ICs and cables did not have a very good reputation among audiophiles. It was generally considered soft, dull, and slow with rolled off HF. I'm not familiar with their recent offerings, but that would be the first area I would be suspicious of and want to address.

Why not give the Cable Company a call (www.fatwyre.com) and discuss ICs and spkr cables with them relative to your system, and BTW, you have some nice equipment already. Several years ago I bought all my Synergistic Research wire(s) through them-- after much home auditioning, and have never looked back. They gave me about a 15% price break. The home auditioning was worth a lot. Good Luck. Craig