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expert sleepers
es-1 (with db25 inputs)

price : $195.00

the expert sleepers es-1 audio/cv interface is a eurorack module designed for use with software such as expert sleepers silent way. it connects to an audio interface using standard 1/4" jack (balanced or unbalanced) or db25 (aka dsub) connectors, and outputs cvs to your analogue synths/effects on standard 3.5mm jacks. when used with the silent way ac encoder software, there is no requirement for the audio interface to be dc-coupled.

the es-1 offers the following advantages over directly connecting an audio interface to analogue gear for cv control:
no requirement for the interface to be dc-coupled.
no need for special cables (e.g. trs to ts 'floating ring' cables).
no danger of damage to the interface - the es-1's inputs are completely standard balanced audio inputs.
much greater output voltage range - up to 9x more than directly connecting a dc-coupled interface via a 'floating ring' cable.

there are two standard configurations of the es-1:
jack inputs - the eight inputs are presented on 1/4" jack sockets, which will accept balanced or unbalanced jack leads. the front panel is 12hp wide.
db25 input - the eight inputs are presented on a single (tascam ta88 standard) db25 socket. the front panel is 8hp wide.
in both cases the module is 70mm deep. 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 16 way idc, with -12v at the bottom edge of the board.

the unit consists of 8 identical channels. each channel consists of
a balanced input stage, capable of accepting balanced or unbalanced inputs. note that for audio interfaces with differential balanced outputs (e.g. the motu ultralite series) this immediately gives you double the voltage range of using a direct dc connection from the interface.
an optional rectifier circuit, for use when the audio interface is not dc-coupled. a jumper on the pcb connects or disconnects the rectifier.
an output amplifier and dc offset circuit. this has a gain range of approximately 1x to 4.5x. the dc offset is adjustable, to centre the output of the rectifier circuit around 0v (if desired).

q. is this essentially the same as the 'special cables' first mentioned on the ac encoder page?
a. no. the es-1 is a significantly more sophisticated solution.

q. why would i buy the db25 version? what can i connect to it? a. typically you would use a db-25 to jack or xlr loom to connect to your audio interface. this saves space and clutter as compared to using jacks at the es-1 end. for places that sell such looms. nb be sure to buy an analogue db25 loom, not a digital one.

q. will it work with 15v supplies?
a. yes.

q. will you be making this in other modular formats (e.g. motm, frac)?
a. there are no such plans currently, simply because we only have a eurorack modular here to test with. however, you can buy the module without a front panel and build it into any modular format yourself.

q. i don't have a modular but i want to use the es-1 for my analogue synths. is this possible?
a. yes, but you'll need to house and power the es-1 somehow. one solution is the doepfer "beauty case" which will house the es-1 plus 3 or so other modules for about $120.

for more info, please view the users manual.

click here to view the manufacturer's webpage for more info.

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