Allright i have a question, i was thinking about it and the sound quality and adjustablity on most all in one efx units arent all that great, has anyone gone out and used studio type singal efx units welst mixing. I was thinking that the sound quality and the options on them would be awsome when compared with the efx 500's/1000's. Though it would probly be awsome ass exspensive too. How about anyone tried wireing stuff through guitar fx units. Did this once befor with my piano going through a distortion unit and it sounded awsome, would be cool too look into doing something like that welst mixing.

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i use ableton for my FX. kinda works like this:

download all the cool free VST plugins you want. flanger and pingpong delays and echos and whatever. load them into ableton. have a nice firewire/pci/pcmcia interface with a minimum of 2x2 I/O and a good low latency. load an audio track with all your fx on it from the input on your interface and just turn them on and off and tweak them out with a midi controller. ive been using my radium 61, but am getting a UC-33e (basically a box of nobs and faders and buttons). sound quality is awesome, and fx possibilities are endless. you can also sample and edit in real time, play loops, and load up virtual instuments if you wanna add in live audio.

latency is the key here, if you are running XP make sure you use ASIO drivers, OSX only has core audio, but i can still get under 10ms latency at 256/96 or 512/192

Pioneer EFX-1000 eliminates all of the sound quality issues in DJ-specific effectors.

As for studio effectors, the TC Fireworx is quite popular among DJs, but will cost a pretty penny.