Simple yet capable solid state preamp from CJ made here in the USA. Super clean cosmetically, plus on the test bench were it performed very well for its price.Note that this is the L Line Level version of the PF2, which does *not* have a phono preamp section. The rear panel shows AUX/PHONO, but on the PF2 L this is only an AUX style standard line-level input. Conrad-Johnson PF2L Line Level All-Analog Preamplifier - Manual More from Conrad-Johnson about the history of the PF1 + 2:The PF1 was the first solid state preamp bearing the conrad-johnson name. — Introduced May 1990, PF1L in August 1991More than one decade of research and development led to the introduction of PF1.The circuit design featured a unique distortion canceling circuit that resulted in excellent linearity without resorting to global negative feedback.Independent discrete dc power supply regulators were used for each gain stage for absolute insolation between stages.Parts quality was to conrad-johnson’s usual high standards. All capacitors, including power supply, were polypropylene and cjd polystyrene. There were no electrolytic capacitors in the PF1. All resistors were 1% metal-oxide deposited on glass construction resulting in very low noise.The PF1 nicely combined the lucidity and harmonic balance of c-j vacuum tube preamps with the superb definition and detail of transistor designs. The PF2 superseded the PF1. — Introduced PF2L October, 1993 | PF2 December, 1993 The line stage circuits were virtually identical.The PF2 offered an improved phono circuit, with selectable gain settings (40,46, and 52 dB). This made the PF2 better suited for use with low outputmoving coil cartridges.The PF2 maintained the exceptional parts quality standards of the PF1. Capacitors were polypropylene and cjd polystyrene including the power supply filter caps. All resistors were 1% metal-oxide deposited on glass construction. Input/output connectors were upgraded from those found in the PF1.Noted for the lucidity and harmonic balance of the cj vacuum-tube preamps, the PF2 refined the achievements of the PF-1 with the superb definition and detail of transistor designs. Features: Inputs/OutputsAux/Phono - AUX Only on this PF2LTunerCDTape 1Tape 2Rec 1 and Rec 2 outputsMain outputs. Controls:SourceRecord (selects source for the Record outputs)BalanceVolumeSpecifications:Gain: Phono Stage 40, 46, or 52 dB selectable (phono overload 65 mV at 1kHz)Line Stage 20 dBDistortion: less than .1% THD or IMDResponse: bandpass 2Hz to more than 100kHzRIAA equalization +/- .25 dB (20 to 20 kHz)S/N Ratio: Phono Stage 86 dB below 10 mv inputLine Stage 94 dB below 2.5 volt outputMechanical:19? x 3.315? x 14 3/8?

Conrad-Johnson PF2 Preamplifier. clean condition, perfect and rich sound.

Conrad-Johnson PF2L - Solid State Stereo Preamplifier.

Vintage Conrad Johnson MF-2200 Amplifier and PF-2 Preamplifier in excellent working condition. Fully functional, no issues. Amp had IC chip replaced. Closest to tube sound in solid state. Power: 200 watts per channel RMS MF2200both channels driven into 8 ohms from 20Hz to 20KHz at no more than 1% total harmonic distortion or intermodulation distortion.Sensitivity: MF2200 2.0 VPhase correct (non-inverting) Frequency response: 20Hz to 20KHz +0, -.25dBHum and noise: 98dB below full power output. Input impedance: 100K ohms.Weight: MF2200 47 lbsPF-2Gain:Phono Stage 40, 46, or 52 dB selectable (phono overload 65 mV at 1kHz)Line Stage:20 dBDistortion:less than .1% THD or IMDResponse:bandpass 2Hz to more than 100kHzRIAA equalization:+/- .25 dB (20 to 20 kHz)S/N Ratio:Phono Stage 86 dB below 10 mv inputLine Stage:94 dB below 2.5 volt outputDimensions:19? x 3.315? x 14 3/8?