the fh-1 'faderhost' is a usb midi host in an 8hp eurorack module, allowing you to directly connect a usb midi controller to your modular synthesizer.
using a suitable connector box "usb midi controller" here includes an ipad or plain old computer.
as well as simple direct control of the output cvs from midi ccs, the fh-1 also offers
lfos on each output
step sequencers
polyphonic midi/cv conversion
and much more
the fh-1 can be expanded with the fhx-1 output expander, for a maximum of 64 outputs.
specifications
panel width: 8hp
module depth: 43mm
current draw: 64ma on the +12v rail, 27ma on the -12v rail (91ma total) (revision 1.1, from november 2015)*
plus the power requirement of the attached usb device. see the manual for information on calculating the current draw on the +12v rail from the usb device.
outputs: 8
digital-to-analogue conversion: 14 bit
voltage range: jumper selectable between ±5v, 0-10v, 0-5v
inputs: 2 digital inputs for clocks etc.
trigger voltage approximately 1.8v
usb socket: type a
expansion: one header for connecting fhx-1 output expanders.
the front panel is drilled for both doepfer and analogue systems mounting holes (using a 'slot' rather than a single round hole). the power connector is a doepfer standard 10 way idc, with -12v furthest from
the top of the board.