xaoc-devices-sewastopol-2

XAOC Devices Sewastopol II

Send it out, bring it back, extract the voltage

10 HP Eurorack module

Sewastopol II is a multifunction eurorack interface module designed for bidirectional audio exchange between a modular system and external gear such as stompboxes, instruments, and studio equipment. It features a high-impedance preamplifier capable of accepting guitar and piezo signals, a unique bipolar peak-detector envelope follower, and a voltage comparator with hysteresis for generating gate and trigger signals. Its musical character is utilitarian and analytical — turning the outside world into modular control voltage while also sending modular signals out cleanly.

Features

  • Balanced 6.3mm TRS export output suitable for line and professional level gear
  • High impedance (10MOhm) import preamplifier accepting guitar, microphone, and piezo signals
  • 0dB to +60dB import gain range with optional +20dB jumper boost on rear
  • Exchangeable preamplifier on detachable board — ships with solid-state model 877ЛПМБ
  • Built-in softclip circuit on import preamplifier
  • Bipolar peak-detector envelope follower with near-instantaneous transient response
  • Two switchable release time ranges (short and long) via toggle
  • Switchable highpass filter (33Hz or 3kHz) before envelope follower input
  • Filter affects follower only — Imported output remains full-band
  • Envelope output available in both positive (Env Out) and inverted (Inv Out) polarity
  • Multicolor LED monitoring of envelope signal
  • Voltage comparator with adjustable threshold (Thresh knob)

Controls & Jacks (19)

  • Env Release
  • Release Range
  • Threshold
  • Follow
  • Low End Cut
  • Compare
  • Env Out
  • Inv Out
  • Trig Out
  • Gate Out
  • To Export
  • Imported
  • Export Clip LED
  • Import Clip LED
  • Export Level
  • Import Gain
  • Export FX Send
  • Import FX Return
  • Port

How-To Guides

  • Guitar Into Modular Via Sewastopol
  • Modular FX Send/Return Loop
  • Envelope Follower CV From Imported Audio
  • Gate and Trigger Extraction From Audio
  • Piezo Contact Microphone to Modular
  • Sidechain Ducking With Inverted Envelope
  • Guitar Through Stompboxes With CV Extraction
  • Clean Modular Output to Mixing Desk
  • Isolate Percussion From Complex Mix for CV
  • Preamp Saturation and Distortion

Explore the interactive Sewastopol II panel on BleepDex — tap any control to learn what it does.

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