Dieter wrote:
Which applications care about latency?

Live work.


Recording studio?
Concert?
Other?


LOTS of inputs / outputs


What is LOTS these days?

RME does 64 of each with the MADI card

Sgt. Pepper was done with a 4 track tape.  :-)

heh... necessity is the mother of invention :D

How many XLR connectors can you fit on a PCI/PCIe card edge?
I don't have dimensions handy, but I'm thinking you'd need a doublewide
card edge?  How many card slots does your computer have?

exactly 0.
the card edge is about 20 mm, whereas the XLR requires 25 minimum :D
besides, you don't want analog inside the PC case

The question I see is whether to go with the balanced XLR for the high end,
or unbalanced RCA or 1/4" (or even 1/8"?) phone jacks for the consumer.
I think most instruments (electric guitars, synths, etc.) use unbalanced
1/4" mono phone jacks?  Yes, in many cases the artist will want to mic the
speaker, to capture the artistic distortion of their favorite tube amp and
speaker, but in other cases you might want to plug in directly.

neutrik has 1/4-jack/XLR combos

1/8 jacks you use an adapter for

Can these be converted with a balun like the $3 RF baluns for converting
between 300 Ohm twinlead and 75 Ohm coax?  Or some converter chip, like
the boards for converting single-ended SCSI to differential SCSI?  Could
the board be set up to go either way?  Have a box for XLR and a box for
1/4" phone.  Mix and match the boxes in your 19" rack to fit your needs.

the required hardware to transform symetric to asymetric is your standard, simple yet effective op/amp connected in an "adder" configuration between the + and -
the shield is connected to the power 0v

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