The BAIKAL XT is the extended version of the BAIKAL. It is a hybrid monophonic desktop synthesizer that offers the best of both analog and digital worlds.
It is designed in two halves — the main circuit board is all digital, generating various sound sources, mixing and treatment options, envelopes, LFOs, and a 16-step sequencer and arpeggiator. It is equipped with an 2/16 OLED display, an encoder pot to navigate through parameters/pages shown on the display, 4 pots to modify the synthesis parameters, and 6 push buttons to cycle between groups of related pages, to switch between the synthesis pages and the sequencer/system pages, and to load and recall presets. In addition the XT version features 25 pots and 13 push buttons for editing parameters directly.
The all analog LP2 filter plus delay board forms the second half of the BAIKAL XT. It combines a raw OTA-C 2-pole filter with a classic lo-fi delay. It contains the voltage-controlled filter and amplifier, and has the ability to treat external audio.
The BAIKAL XT is based on the Shruthi XT synthesizer. PCB and firmware originally designed by Émilie Gillet under Creative Commons cc-by-sa 3.0 license.
Power supply is not included.