Unearth a world of sonic possibilities with the Buchla & Tiptop Audio Dual Oscillator Model 258t. This exceptional module is a modern recreation of the iconic Buchla 200 series, now accessible in the Eurorack format. Perfect for both seasoned sound designers and modular synth newcomers, the 258t brings classic analog warmth and versatility to your setup. Its dual oscillators provide a robust foundation for crafting everything from subtle, sine-based textures to rich, harmonically complex sounds.

With oscillator 1 transitioning seamlessly from sine to sawtooth waves, and oscillator 2 morphing from sine to square, the 258t ensures a broad spectrum of tonal variety. The module offers a plethora of modulation options with full voltage control over frequency, wave shaping, and frequency modulation, allowing you to sculpt non-harmonic overtones and metallic timbres with ease. Its attenuverter further enhances your creative control, offering pitch scaling, inversion, and expansion without external processors.

Whether you're delving into ambient soundscapes or pushing the boundaries of experimental electronic music, the 258t is your ticket to a universe of unexplored auditory frontiers.

Key Features:

• Re-creates the original Buchla 258t 200 series module in Eurorack format
• Dual oscillators with wave shaping range from sine to saw (oscillator 1) and sine to square (oscillator 2)
• Control voltage input for 1V/octave note tracking
• Oscillator frequency control ranges from 5Hz–20kHz
• Attenuverter allows flexible control over pitch scaling, inversion, and expansion
• Frequency modulation control for creating non-harmonic partials
• Size: 18HP wide, 45mm deep
• Power: 70mA (+12V), 40mA (-12V)

Owner's manual

Product specs

FAQs

What waveforms does the Buchla & Tiptop Audio Dual Oscillator Model 258t produce?

The Model 258t offers sine and saw waveforms on Oscillator 1, and sine and square waveforms on Oscillator 2, providing a versatile range of analog sounds for modular synthesis.

Is the Buchla & Tiptop Audio Dual Oscillator Model 258t compatible with Eurorack systems?

Yes, the Model 258t is designed as a Eurorack module, making it fully compatible with Eurorack systems and cases, requiring an appropriate power supply.

How many voltage-controlled oscillators (VCOs) are included in the Model 258t?

The Buchla & Tiptop Audio Dual Oscillator Model 258t features two independent voltage-controlled oscillators, allowing for complex sound design and modulation possibilities.

What are the power requirements for the Buchla & Tiptop Audio Dual Oscillator Model 258t?

This module requires a Eurorack case with a power supply providing +12V/70mA and -12V/40mA to operate correctly.

How does the Buchla & Tiptop Audio Dual Oscillator Model 258t differ from other Buchla oscillators?

The Model 258t is an analog dual oscillator module offering classic Buchla waveforms and sound character, designed specifically for Eurorack systems, unlike more complex Buchla oscillators like the Model 259t.