Difference in Jolida JD 100 and JD 100a?

I have narrowed down my search for a good cd player to the Jolida Jd100a. I am seeing classified ads for the Jolida jd 100 as well as the 100a. What, if any are the differences between the two? I am looking for an unmodded unit. If I decide to have it modded, I want to be the one to decide which mods will suit my system best.

Presently, my system consists of a Classe' Model Ten amp, Modulus 3 preamp with 6H23EB tubes, Marantz sa8001 sacd, Magnum Dynalab Etude tuner, Vpi/Rega/Grado analog rig and Vandersteen 2CE Signature speakers. I am running Audioquest Indigo Blue speaker cable for the bass, and MIT Terminator 2 speaker cable for the mids/treble. My interconnects are mit Terminator 2 and I am also using a Shunyata Guardian 2, and a Shunyata venom, diamondback and king Cobra power cords. Mt system is on its own 20 amp dedicated line.

I am less than satisified with the Marantz sacd player. It sounds wonderful on sacd, but a bit bright on redbook cd's. I am hoping the Jolida with tube output will cure the excessive brightness. I have already tried many different interconnects on the Marantz to try and tame the brightness.

If anyone can enlighten me on the difference between the two Jolidas, I would be very grateful.

Thanks,

Bob