Now to really understand your pedal do the following:
Set the "Intensity" knob fully clockwise in order to get the full effect; set "Width" to zero, `cause we´ll look at the modulation thing a little later on. If you´re now working the "Delay Time" knob back and forth you´re doing the LFO´s job thereby exploring the subtle differences in sound this pedal has to offer. Now set "d.-time" and "speed" to zero and "width" to max. The LFO is now going through the full spectrum at a low frequency. As you increase the "speed" the sound gets crazier; if you back off with the "intensity" knob you get back into musically useful territory- a pretty decent rotary speaker simulation. Get the "intensity" knob back to full on and back off with the "width" (modulation depth) instead- again the result is musically useful. Remember: Speed and Width were the only two controls on early choruses; so there used to be just two general chorus settings: fast with little modulation (also called "Ensemble") and slow with more modulation (the pseudo- phaser sound).
Now lets get this "d.-time" control back in: set "width" somewhere left of the middle and speed say at about one o´clock; start with the "d.-time" at zero and slowly increase its value. Since you´ve raised the pitch of the delayed signal about a fixed value your overall chorus sound gets brighter. This option yields many variations on those two standard chorus settings that are utterly useful. Keep in mid: the more you increase "d-time" manually, the less room remains for the LFO to do the same thing. Also try this with varying LFO speeds.
While on some occasions a rather in-your-face chorus sound is what you want and need, many times the opposite will be true- which is where the "intensity" knob comes in most usefully. Whatever basic chorus setting you´ve chosen here´s your key to giving it a more or less obvious taste.
All BBD based units do hiss a little, may they be delays, choruses or flangers. This unit makes no exception to this rule, however it´s neither worse nor better than comparable Ibanez or Boss products.
The actual sound of the chorus is excellent and right up there with those overprized vintage Boss units. Believe me: I own all four of the Boss CE´s (including the big old 1 and, actually, the rack mount CE 300), as well as the TC Electronic Chorus/Pitch Mod/Flanger.
I says: the DOD FX68 is the guitarists best chorus for the least money.
Mine never had a battery cover. Seems to be a usual problem with those old DOD units; don´t worry: gaffer will do the job.
Other than that I have no complaints at all.
I´ve said it before, I´ll say it again: this chorus is excellent and costs you next to nothing. Don´t let them fool you with market trends and hip labels. This unit sounds just as good as comparable others and has the benefit of being more useful and more versatile. And while I have those more glamorous horses in my stable I return to my trusty old DOD again and again.