via these NOISEBUG Listings
"The Echoplex features 16-bit digital 44.1kHz recording/sampling to RAM. It ships with 50 seconds worth of memory, however this can be easily upgraded just like any sampler using standard RAM SIMM chips to up to 200 seconds of recording time.
Although the Echoplex may have been designed with the intentions of being a modern digital delay based on the classic tape-based analog delays (Maestro Echoplex EP3), the Echoplex offers digital, clean, and intuitive performance features. Play anything into it, loops, guitar, keyboards..all in realtime. As soon as you stop recording, the sampled material begins looping...and you can now jam along with it! Overdub additional loops and build arrangements, all on the fly!!! The number of overdubs and length of loops is limited only by the amount of memory. Mistakes or undesirable loops can easily be undone. The Echoplex can store up to 9 separate loop/ arrangements. A cool EFC-7 Foot controller can also be used so you can punch in and out of loops without having to use your hands...so you can keep playing.
The Echoplex is also fully MIDI capable. All controls send/receive MIDI data and even the Loops can be saved and loaded via MIDI! MIDI sync makes sure your loops can be locked to the tempo of your MIDI sequencers giving the Echoplex a niche in your MIDI-studio as a dedicated loop-player! Loops, like samples, can be assigned to keys on a keyboard and can be triggered as loops or single-shot samples. Other functions of the Echoplex include Reverse, for backwards loops, and a Multiplay feature which repeats loops a user-defined number of times to create an extended loop (ie: extend a 4-beat loop into a 16-beat loop)."
