Poseidon's Voice Sabre 32S digital analog converter - fully differential outputs.
The front panel is black anodized and comes with the enclosure - from
DIY Hifi Supply, it was fully engraved and infilled using Front Panel Express software. The graphics of the Twisted Pear and Buffalo were imported into Corel Draw, modified for increased resolution and then exported to FPE.
This is the rear panel. Pretty self explanatory. IEC is a Furutech. Switch is from Radio Shack. Vampire RCA posts and Neutrik XLR's. Digital input is WBT RCA/75 ohms. The rear isn't engraved because it is a painted black aluminum, not anodized in other words.
Inside full view. Pretty classical layout. Keep AC components on one side and DC on other. You will see that a good 75% of this enclosure is occupied with power supply components.
Felix IEC filter as detailed elsewhere on this site. It's now a permanent part of my builds.
Hammond dual bobbin/split bobbin transformers, eliminates the need for an electrostatic shield between the primary and secondaries. Also provides for some high frequency filtering from the AC line. One 1A transformer for each of the three supplies (digital, positive analog, negative analog). Each transformer is carefully placed 90 degrees to the other to minimize hum. All AC wiring is twisted.
These are the 3 Peter Daniel CRC supplies. Each capacitor is a 15,000 uf Mundorf electrolytic. The diodes are MUR 3060 three pin, hexfred technology.
Paul Hynes shunt regulators. One for each supply. Ensures nearly complete isolation. I could've gone further and designed in separate analog supplies for each phase/channel! No space though.
The Twisted Pear Buffalo 32S board. Has its own onboard IVY II analog output board with relays so you don't hear a 'pop' from your speakers when you turn the dac off. The output voltage is set at 2V rms (balanced output) by Shinkoh Tantalum resistors. Matched to 1%. The unbalanced/RCA output is 1V rms.
Descriptions/details to follow.
Questions/Criticisms welcome.
Anand.
