Dazman - if bass is your #1 priority then don't go with a tubed based player. Bottom line, at the peak of design, a solid state player will have better bass. Same can be said for a tube player and the mid range.
Confused why you're disappointed. Your impressions from reading reviews is true in that overall the Jolida is a great player that many enjoy. But when you break down the bass, treble, mids, etc...you will have ratings for each that don't tell the "whole" story. The NY Yankees have the higest payroll and most star power every year, yet the team that wins the World Series is the best "team".
In summary, this is what you get from the Jolida:
Highs - 8/10
Mids - 9/10
Bass - 6/10
Dynamics - 7/10
Speed - 5/10
Extension - 6/10
Separation - 5/10
Soundstage - 7/10
Imaging - 6/10
Enjoyment - 10/10
With all this said, I've found in my experience the amp used being greater than or equal to in significance effecting the ratings. Same goes for speakers. Which is why you hear comments like "jolida is solid state like" or the "jolida has great bass". Hell, I believe them! It's all system syngergy. So I suggest you try it out in your system.