That's it I, green and black, perhaps the first, at the time it threw out this big box style panzer ..... Purchased in the late 70's by my wife for her analog keyboard. Used by myself with my guitar.
That the old, so, ah ah!
Apparently the much sought after analog flanger to the coast to the Argus. I do not really remember most of the original price was just not in euros, that I still remember it!
a good point: the power supply, thus avoiding to buy a transformer, we see more things these days my dear lady!
9, because the live analog!

UTILIZATION

The manual is long gone, but good as any analog pedal, no need to read .....
9, because there's nothing else to say!

SOUND QUALITY

Then there ....... It's really great on the water of an old Korg analog, but now it's all integrated as I do not see the point would have a keyboard player to acquire the object.
For the guitar is a bit frustrating, and I must say that it is used sparingly: very well when playing arpeggios of prog 'style of early Genesis, or the rhythmic sound clear. This is complicated a little solo, one is quickly in his Van Halen, there's no doubt, but get tired quickly, because it stains very metallic sound wave is not easy to master. I use the three knobs stuck on 13.00 for me is the best sound. Previous position on the effect is not very clear and then you come by against a soon to her aquatic style Flipper!

OVERALL OPINION

A good old pedal reputation and very strong. Certainly not essential, any more than a phasing-but interesting all the same with this unique sound. Use it wisely and sparingly on pain of tired and the bublic .... yourself!
9, because it's emotional last 30 years we are together!