Bastl Instruments Noise Square

Six noise/square sources in 5 HP — analog noise + 808-flavored metallic stack.

5 HP Eurorack module

Bastl's Noise Square is a 5 HP source module that combines two analog noise generators (WHITE and PINK) with four digital signal generators (SQUARE, COW, METALIC, and DIGITAL). SQUARE is a tunable square-wave oscillator. COW is the SQUARE plus an additional fixed-ratio square wave summed in analog — designed for cowbell timbres. METALIC is six square-wave oscillators with frequency ratios inspired by the Roland 808 (use it as the source for hats, cymbals, or other metallic percussion). DIGITAL is a tuneable digital noise source. Three knobs tune SQUARE/COW, METALIC, and DIGITAL respectively; one switch selects whether the shared CV input modulates METALIC or DIGITAL; a dedicated CV input controls SQUARE/COW tuning. CV inputs respond to a 0–10 V range.

Features

• 5 HP skiff-friendly footprint
• 2 analog noise generators: WHITE and PINK
• 4 digital sources: SQUARE, COW, METALIC, DIGITAL
• METALIC = 6 square oscillators with 808-inspired frequency ratios summed in analog
• COW = SQUARE plus an additional fixed-ratio square wave for instant cowbell timbre
• DIGITAL = sample-rate-controlled digital noise
• Tune knob per digital source (SQUARE knob shared with COW)
• Two CV inputs: dedicated CV SQUARE In + switched CV In (to METALIC or DIGITAL)
• 0–10 V CV input range
• FTDi breakout for hacking the open-source firmware
• Handmade in Brno, Czech Republic

Controls & Jacks (12)

• SQUARE
• METALIC
• DIGITAL
• CV Select
• CV SQUARE In
• CV In
• SQUARE Out
• COW Out
• METALIC Out
• DIGITAL Out
• WHITE Out
• PINK Out

How-To Guides

• 808-style hi-hat from METALIC
• Kick noise layer with PINK
• Tunable cowbell from COW
• CV-modulated digital noise
• White noise → sample-and-hold source

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