gracias chus, es que lleman la atencion, por ejemplo la pequña de lynx no es barata, 500 euros pero las especificacione os son de ordago a primera vista:
Stereo 24-bit analog input and outputs with +4dBu or -10dBV levels, less than
0.0025% THD+N, and dynamic range greater than 103dB (real specs, not just converter specs).
Digital I/O supporting AES/EBU and S/P DIF formats at sample rates up to 96kHz.
Independent, 24-bit audio stream architecture supports simultaneous four-channel recording and playback.
Supports 8, 16, 24 and 32 bit audio file formats.
Two smart, deeply buffered MIDI ports.
Low-jitter, highly adjustable sample clock tunable to all rates 8kHz to 100kHz.
Clock inputs and outputs sync to word, word*256, video clocks and to other LynxONE's.
Reconfigurable FPGA-based engine supports record monitor mixing and stand-alone A>D or D>A conversion capability.
Mixer application provides software-controlled configuration - no jumpers!
Ships with complete 6' Audio cable and 2' MIDI/Clock cable set.
Audio cable is DB25 to balanced XLR for all connections.
MIDI/Clock cable is HD15 to standard MIDI connectors for both inputs and outputs. BNC for Clock input and output.
Internal Clock input and output connectors for synchronizing multiple LynxONE's or connection to video capture/playback adapter.
Requires 90MHz Pentium or DEC Alpha processor, one free PCI slot, 16MB RAM minimum.
Ships with Windows 95/98/ME drivers and Windows NT/2000/XP drivers for Intel/AMD platforms.
Macintosh OS9 ASIO 2.0 drivers available for download.
FCC Class B and CE approved for Home and Office use.
http://www.lynxstudio.com/lynxonespecs.html
http://www.lynxstudio.com/lynxonebrochure.html