Buffalo-III User Manual v1.0 (coming soon)
Previous versions of the Buffalo have used onboard local linear regulators for powering the various sections of the ES9018 DAC chip.
The Buffalo-II allowed for easy bypassing of the onboard regulators for power supply customization, and also used a pair of custom shunt regulators built around a common voltage reference for powering the critical analog sections of the ES9018.
Since out Trident regulators have proven to be extremely popular, we have done away with the linear regulators and designed the Buffalo-III to use them explicitly.
The Buffalo-III retains a single on-board linear 3.3V voltage regulator for powering the onboard microcontroller and optional external accessories.
Two 3.3V Trident modules provide power for the on board Oscillator (VDD_XO) and main digital sections of the ES9018 (DVCC).
One 1.2V Trident module provides power for the digital core (VDD) of the ES9018.
Finally, the AVCC module provides power for the left and right analog sections of the ES9018.
(For the best performance, we recommend the Placid
set for 5.0V output, powered by a 9V+9V transformer (available
Previous versions of the Buffalo were two-channel or mono, combining the eight channels of the ES9018 into four or eight DACs per channel.
The Buffalo-III exposes all eight channels independently; by installing optional jumpers on the bottom of the DAC board, the eight channels can be combined in various combinations from one to eight channels.
When configured for two-channel mode (like the Buffalo-II) the output headers used align perfectly with the inputs of our IVY-III and Legato I/V output stages, allowing for module stacking: no wires and the shortest possible signal path.