The Long Division tone module has features not found elsewhere:

This is the first module of its type with complete polyphony: all 61 notes available all the time!

12 independent and free running oscillators, one for each note of the scale (C, C#, D, D# etc.)

Built in vibrato with speed and depth controls

Choice or organ or piano sustain

Tone Control

Variable release time

Tone and tuning CV inputs

100% analog tone generation

Plug and play operation

Dimensions: 213mm wide (42hp) x 127mm tall x 60mm deep (note that this will not fit in a lot of skiffs.)

Current draw: +12V up to 500mA if all 61 notes are played at once, 120ma under normal circumstances; -12V 1.5mA, +5V not used

Here are a couple demo videos:

The user's guide: 

Long Division (original) module: $750.00 inc. USA/Canada shipping