Soekrates revisions

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

Rev 10

• 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

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

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

Rev 6

• First implementation of buffered balanced outputs from DAM1021 board

Rev 4

• 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

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

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

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