companies that modify equipment...opinions

As Elizabeth stated, I too have no interest in modifications to original designs and instead prefer to enjoy a given builder's/manufacturer's original intent and execution of a product. If it turns out not to provide long term satisfaction, I find a way to trade out or up to another piece of original gear. And repairs to restore as originaly designed are the only way to go. Mods, no matter what they are, reduce long term resale value. Also, I would always want to know if a previously owned product was modified so that I can steer clear of purchasing it. I have had a couple of bad experiences in this regard and won't purchase modded gear ever again. In fact, there should be a policy that if an Audiogon member sells a piece with undisclosed mods in the offer for sale, and it is determined by the buyer upon receipt that it was indeed modified and undisclosed prior to the sale, then the buyer should have the option of a full refund and return, NO QUESTIONS ASKED!!!

I had no interest in mods until I heard a friend's GNSC modified ARC SP-14.

Reminds me of the saying about 'fools rushing in.....'. I find it amusing to see folks who immediately have a unit mod'd when they haven't even heard it and how often mod'd stuff appears in a for sale ad just after a mod is performed. And, concurrently how seldom we ever see an professional, or even user, A/B analysis of the performance differences.

I agree with Ptmconsulting. Don't mod unless you KNOW what the result WILL BE, not just what some merchant tells you. And, FWIW I would never do a 'mystery' mod, or a mod which is not reversable unless I had actually heard and actual unit in my system in my room. Caveat emptor.

Upgrade Company gives money back gaurantees so you may want to add to your list.