PREAMPLIFIER KP-200 B. It is exactly the same as the KP200 model, the only difference is that we have added holes for easier installation. It is the board WITH THE COMPONENTS, which has been assembled and tested, ready for use. It is a Hi-Fi turntable phono pre-amplifier that allows you to connect low signal output turntables, magnetic cartridges to an amplifier, or sound mixer that has normal stereo line level inputs (100-300mV) AUX, LINE etc. You can use this good quality RIAA equalised pre amp without signal loss or distortion and avoid to buy expensive sound amplifier or sound mixer. You can connect it to the sound card of your computer and convert your old records in mp3. FEATURES: Supply Voltage : 9 - 24VDC max. (Can also be operated with a 9V PP3 battery not included). Input Impedance: 47 Kohms at 1kHz. Output Impedance: 47 Kohms (200 ? min). Input sensitivity: 2-5mV. Output: 300mV (1.8V max). Gain: 40db S/N ratio: 85db. Frequency Response: 20Hz to 20kHz +/- 0.3db. THD: 0.05%. Metal film Resistors and good quality capacitors. You can use any GOOD POWER SUPPLY YOU HAVE, WITH VOLTAGE 9 TO 24VDC/100mA min. Dimensions: 52X39X17 mm. Colour: Blue, Green or Yellow. 5 Years Warranty. WHAT'S INCLUDED: 1 x Phono preamp. User guide Business seller information: S.P.C Electronics. Spyros Papakonstantinou. Paparigopoulou 20 Str. 8046 Paphos. Cyprus. Value Added Tax Number: CY 90005904X I provide invoices with VAT separately displayed.