CP-9 Pro+

The Maxon CP-9 Pro+ Compressor/Limiter is a versatile pedal with studio-grade DBX Compression circuitry, offering a range of features and technical specifications. Here are the details:

Features:
- Studio-grade DBX Compression circuit in a pedal
- Variable 1:1 to ∞:1 compression Ratio
- +30 dB maximum Gain boost (usable as a clean booster)
- 18-volt operation for increased headroom and full-frequency response
- Reduction status LED
- True Bypass Switching

Functionality:
- Provides smooth, transparent compression with low noise floor
- Offers up to +30 dB of clean Gain, usable as a clean booster or volume attenuator
- Can be used with any instrument and for various applications, such as sending into an amp's front end, placing in a loop, or using as an outboard processor for home recordings

Technical Specifications:
- Input Impedance: 500K Ohms
- Output Impedance: 10K Ohms or less
- Maximum Output Level: +18 dBu (1 KHz)
- Controls: Threshold (0 dBu to -40 dBu), Ratio (1:1 to ? :1), Gain (0 dB to +30 dB)
- Distortion Ratio: 0.01% (1 kHz) at 0 dB output
- Residual Noise: 95 dBu (input shorted, IHF-A weighted)
- Power Supply: 9V Manganese dry cell battery (6F22) or special AC adaptor
- Power Voltage: DC9 V (Battery) / DC10 V (AC-adaptor)
- Current Consumption: 25 mA (9 V) / 23 mA (10 V) at 18 volts
- Dimensions: 74 mm (W) x 124 mm (D) x 54 mm (H)
- Weight: 580 g
- Accessories: 9V Manganese dry cell battery (S-006P) x 1, Warranty Card x 1, User's Manual x 1

The CP-9 Pro+ is designed to provide professional-grade compression in a portable stompbox format, offering a wide range of applications and precise control over compression settings.