save your money:
I like the Psychological Test vs the Audible test.
I've had way too many "pros" tell me that "of course Maple sounds Brighter than Alder" or some other such nonsense.
I embarrassed a mod on another well-known bass forum with the perception experiment.
entire thread was deleted after "ol' dog ears" realized he was preaching nonsense.
I read a few of his obnoxious posts where he literally instructed people to purchase certain instruments because of the "tone-woods". Or chided them in their preference of a maple fretboard when considering a softer rounder tone for jazz (I sheet you not!)
a few posters challenged his assertions and that it was impossible to tell. He then remarked that his hearing was exceptional like that of a dog...
Rather than jump right in and point out he was full of beans, I waited a week and posted how I was torn between tone-wood choices and how perhaps I had an uneducated ear...
I used the same instrument. A Korean P-Bass Imitation (who cares what kind of wood it was made of. It was Brown
The thread title was "Help Me Choose My Tone"
I stated that a few friends had loaned me their basses so I could make a decision.
I posted four wav files:
1. "Fender J-Bass: Alder: Maple Neck/FretBoard"
2. "Kubicki - laminated neck - ebony fret board
3. Ibanez SGR 5 string - rosewood fret board
4. Musicaman Stingray - don't know what woods
Only two responses said they couldn't tell
several claimed that the Kubicki had the rounder tone
Moderator then tries to deconstruct by saying: "Oh the 5 string affects the resonance of the instrument when compare to the other 4 string instruments"
He then tried to explain what each tone-wood in my example was best suited ...
After about 4 pages of "sonic quality" and "the stingray would be good for ballads, but the Kubicki obviously sounds like the best of the four!" Bullsh*t and lots of other posters agreeing with him, I apologized and revealed that it was the same bass in each.
The guy's ego was smashed - deservedly so.
I was banned and thread deleted. Haha!