Not to pull the thread away from the discussion, but you might also experiment with power cords. When we had the JD-100, an upgrade to a pricey PC really opened up the midrange. Enjoy that player. It's very good.
mod. It is a good player, but I've never been satisified with the bass of the unit. I use RCA NOS tubes which improved on both of these sonic areas. I also use a Shunyata Diamondback pc which improved the high end clarity as well. You will definitely want a good power cord to improve this baby. I use the standard feet.
ecool, I highly endorse the EI's Stevecham commented on, however they have had a bit of a QC problem so be sure to buy from a reputible dealer and buy ones which have been tested for microphonics (usually this is done in the matching process, as in matched pair. Costs a few bucks more but well worth it). If you buy these from unknown internet sellers you risk buying others rejects.
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