CP-9 Pro+ Compressor/Limiter

The Maxon CP-9 Pro+ Compressor/Limiter is a studio-grade pedal featuring a DBX Compression circuit with a variable 1:1 to ∞:1 compression ratio and up to +30 dB maximum gain boost. It operates at 18 volts for increased headroom and full-frequency response, and it includes a reduction status LED for visual feedback.

The CP-9 Pro+ is designed to provide transparent, low-noise compression with a smooth, balanced dynamic response, allowing the instrument's natural tone to shine through. It 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.

Key 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)
- Internal Circuit Voltage: Stabilized +/-9V DC-DC converter
- 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
- Battery Life: Approximately 5.1 hours (Panasonic NEO battery 6F22NB) or 12.4 hours (Panasonic Alkaline battery 6LF61G)
- Dimensions: 74 mm (W) x 124 mm (D) x 54 mm (H)
- Weight: 580 g

The CP-9 Pro+ features mechanical true bypass switching using a Fujisoku 4PDT switch, ensuring quiet, transparent operation when bypassed. It also includes a warranty card, user's manual, and a 9V Manganese dry cell battery.