DigiTech PDS 1550 Double Distortion

Effect of distortion analog two-channel format (double pedal).
Of parametric equalization.
Ability to use and adjustment of a period house (off, 10, 20 and 40 ms).
7 mini internal switches to select the time and the time of it, filters treble boost of the serious and the assignment of a parametric EQ + "trimpot" (pot adjustable).
One input and two outputs (wet and dry)
Two status LEDs (one for each channel distortion)
Two pedals (one for selecting a channel to engage the pedal).
Solid metal housing (heavy weight).
8 only because the switches are inside (need a screwdriver)

UTILIZATION

The configuration of the pedal and simple but requires some time to find its appropriate because (the downside) in the number of internal switches and opportunities that result.
So, once we have a rhythmic sound and a lead sound (for me that's how I use it) can not hack over the entrails of the beast ...
The manual is concise and deserved more information on examples of sounds depending on the position of the internal switches that change completely the sound that you get with the knobs on the pedal.

SOUND QUALITY

Both channels are radically different!
A distortion is the metal type (and parametric equalization reveals even the bass guitar at a single coils!)
The distortion B is more "classic" and goes from slight overdrive to distortion (at the bottom, the level of distortion is not excessive).
After extensive hacked switches and "trim pot" (which adjusts the frequency at which the switches will do) we finally found the sound and it clings to the settings (the best and write them down!).
Depending on my mood I prefer the distortion A, other times it's B. .. In fact it depends on what you play!
I turned off the boost of serious was not necessary with my Les Paul Std.

OVERALL OPINION

It's a pedal that I bought in 1500 Franks in the late 80's. At the time I thought it was excessive (and yet I had cracked because the sound blew the heavy metal and distortion pedals) but now I see that the pedal still works and is so "flexible" that it has a really wide sound range. It is very versatile and suitable for all styles: 9 / 10