Rev 13 (current)
- Back to single DAM1021 configuration
- DB9 serial port added to allow for firmware upgrades without having to open the DAC up
- Enclosure height reduced by a substantial amount
Rev 12
- Back to small single-chassis design
- AMB Sigma22 regulator swapped with The Wire LT3042 Parallel Reg PSU
Rev 11
- Back to dual chassis design
- 10-pin DIN connectors used as DC umbilical cord
- Back to dual chassis design
- 10-pin DIN connectors used as DC umbilical cord
Rev 10
- Power supply swapped for AMB Sigma22 Bipolar supply
- Single large R-core transformer used
- Power supply swapped for AMB Sigma22 Bipolar supply
- Single large R-core transformer used
Rev 9
- Experimental revision
- Chassis made even larger
- Sides hollowed out - planned for installation of heat sinks
- Experimental revision
- Chassis made even larger
- Sides hollowed out - planned for installation of heat sinks
Rev 8
- Large chassis fully implemented
- Adequate space for two transformers and two DAM1021 boards
- Proper balanced out implementation allowed
- USB to I2S changed back to WaveIO due to concerns over DiYinHK board sound quality
- Input selector boards + rotary switch implemented
- Large chassis fully implemented
- Adequate space for two transformers and two DAM1021 boards
- Proper balanced out implementation allowed
- USB to I2S changed back to WaveIO due to concerns over DiYinHK board sound quality
- Input selector boards + rotary switch implemented
Rev 7
- 5V DiYinHK supply added for USB
- Dual DAM balanced raw outputs announced
- Complete failure trying to integrate into two small 5" by 7" enclosures
- 5V DiYinHK supply added for USB
- Dual DAM balanced raw outputs announced
- Complete failure trying to integrate into two small 5" by 7" enclosures
Rev 6
- First implementation of buffered balanced outputs from DAM1021 board
- First implementation of buffered balanced outputs from DAM1021 board
Rev 4
- Not much change - chassis split back to dual designs
- Not much change - chassis split back to dual designs
Rev 5
- Small single-chassis design laid out
- Vented sides removed (have no idea why!)
- Coax integration scrapped for now
- Power supplies and USB to I2S board changed to DiYinHK options
- DAM1021 to be mounted on top of enclosure
- Small single-chassis design laid out
- Vented sides removed (have no idea why!)
- Coax integration scrapped for now
- Power supplies and USB to I2S board changed to DiYinHK options
- DAM1021 to be mounted on top of enclosure
Rev 3
- Experimental single-chassis design - no need for umbilical
- Depth of chassis increased to allow for more space
- USB added instead - first usage of WaveIO board thought of
- Experimental single-chassis design - no need for umbilical
- Depth of chassis increased to allow for more space
- USB added instead - first usage of WaveIO board thought of
Rev 2
- Vented sides
- Raspberry Pi integration scrapped
- Similar dual-chassis design
- Toslink and coax inputs added
- DC umbilical cord planned for to connect power supply and DAC
- Vented sides
- Raspberry Pi integration scrapped
- Similar dual-chassis design
- Toslink and coax inputs added
- DC umbilical cord planned for to connect power supply and DAC
Original Soekrates concept
- Dual-chassis design
- Wood top and bottom, aluminium everything else
- Raspberry Pi integration planned
- Single DAM1021 board
- Salas BiB and Reflektor-D for power supplies
- R-core transformer planned for
- No hardware input options
- Dual-chassis design
- Wood top and bottom, aluminium everything else
- Raspberry Pi integration planned
- Single DAM1021 board
- Salas BiB and Reflektor-D for power supplies
- R-core transformer planned for
- No hardware input options
Looking good Walter!! How close are you to having a proto up and running? Really interested in knowing how it actually SOUNDS after all the back and forth issues you've faced this far. Would be a crying shame if the SQ wasn't anything special but from the browsing I've done on the DIY site, that shouldn't be an issue. cheers!!
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