Frap Tools 321 (used)

Audio signal amplifier and control utility module - Used

• Utility module for precise processing of audio and CV signals
• 3 independent channels with adjustable scaling, inversion and offset
• Dual sum output with intelligent management of patched signals
• Up to +6 dB amplification, with -6 dB switch for extra headroom
• Used unit in excellent condition, ideal for complex patching

321: Precision and Total Control for Your Eurorack

Frap Tools 321 is a high-quality utility module designed for flexible and transparent processing of audio and CV signals. With three independent sections capable of amplifying, inverting and applying offsets to signals, it is an essential tool for those seeking complete control and refined modulations in their modular system.

Advanced Signal Manipulation Functions.

Each section can amplify or attenuate (up to +6 dB), invert phase, and add positive or negative offsets. Offsets can be turned off for more neutral treatment of the audio signal. If no cable is inserted, each section can generate a constant voltage, useful for external controls or static modulations.

Intelligent Summing for Versatile Patches

The module offers two summing outputs: a total one that includes all channels (even those patched locally) and an "unpatched" one that automatically excludes used sections. With the use of dummy cables, one can control exactly which signals to sum. Both outputs include a -6 dB switch to handle signals with high amplitudes.

Frap Tools Quality for Audio and CV

The summing section is based on the CGM design, a guarantee of transparency and reliability. The 321 is DC-coupled, perfect for any type of signal, from audio to complex CVs, in a compact but extremely powerful format.

Technical Specifications.

• Three independent sections with offset, inversion and gain control
• Positive/negative offset, switchable via switch
• Amplification up to +6 dB, full attenuation to mute
• Dual sum output (total and partial) with -6 dB switch
• DC-coupled, suitable for CV and audio signals
• Fixed voltage output if no signal is patched
• Designed for flexible and precise patching