Optivalve MKII

The Optivalve MKII by Gurus is a tube-driven optical compressor pedal designed to provide versatile and high-quality compression for various musical applications. Here are the technical specifications and features:

- Power In: 12VDC (negative TIP)
- Consumption at 12V: Max 300mA
- Input Impedance: ≤1M Ohm
- Output Impedance: ≤10K Ohm
- Signal-to-Noise Ratio: <90db
- Distortion: Max 2%THD
- Estimated Tube Life: Up to 5000 hours
- Dimensions: Width 220mm (8.6"), Length 130mm (5.1"), Height 50mm (2")
- Weight: 0.7Kg (1.5lbs)

Key Features:
- Soft Limiting/Enhancing: Provides maximum headroom without affecting the input, enhancing touch, and limiting when attacking notes harder.
- Use with Acoustic Guitar: Allows for tone matching and fine-tuning compression values.
- Hard Track Limiting: Can be used as a standard outboard effect on mix for any instruments, with tone control for output sound fitting.

Controls:
1. Input: Sets the threshold on the input signal
2. Ratio: Sets the compression ratio
3. Output: Sets the output gain
4. Tone: Adjusts the EQ
5. Compression: Shows the compression level
6. Tube
7. True Bypass Switch
8. Instrument Input
9. Main Output
10. Power DC12V - 300mA

The Optivalve MKII is suitable for use with guitars, bass, keyboards, and acoustic guitars, as well as for mixing tracks. It offers true bypass functionality and features a "See thru Magic EYE" for viewing compression reduction levels. The pedal also includes a 12AU7 Gurus Tube for enhanced performance.