Electro Harmonix Doctor Q 1978
Over the past decades many effects has come and gone, but envelope followers (envelope filters) are here to stay. Sometime in mid 2000s Electro Harmonix released reissue of their simple envelope follower Doctor Q. It was the "big box version" with led-indicator. This was before Dr.Q nano was released. I got one. It was gooood, and I liked it alot. So when I got a change to have the original real deal from the 70s, I jumped right in! This is surely not the mint condition, but the battery cover on the back still exists! And it was very reasonable priced.
This pedal is the usual EHX quality, ie. not so good. Soldering is sloppy, PCB design is not great and mechanical construction leaves alot room for improvement. Just look at that unwashed solder flux! Flux residue is also corrosive, so those solder joints might break at some point. Also ugly solder blobs exists, like in all vintage EHX pedals. I have not modified mine at all, but if (and it's very unlikely) I would use this in a band setting, I would definitely try to improve the reliability.
There is something odd about envelope filters. Besides the sound, your individual playing style also affects alot how the pedal will sound and behave. Also bass players will jam with different pedals than guitarists. Both DOD FX25 and Mu-Tron Micro V sounds very good, but neither one fits well for my playing style. Dr.Q on the other hand... I don't know why I like it so much. I haven't even used it that much for anything. I had my reissue when I played bass in a band, but my band mates looked at me weirdly when I tried to use it.