PASSIVELY EQUALIZED RIAA PHONO PREAMPLIFIER. It is the board, which has been assembled and tested. After numerous request from our customers we decided to split the power supply from the preamplifier. We still kept the price the same. This is the cheaper version of the successful model SPA5.The op amps are on sockets so you can be upgraded at anytime, whenever you want. 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). You can use this VERY good quality PASSIVELY 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. It is made with the integrated circuit NE 5532 which can be upgraded easily. FEATURES: Supply Voltage : 220-240VAC. (110-120VAC Upon request, please send us a message). Symmetrical Power Supply with low noise regulators (included). Input Impedance: 47 Kohms at 1kHz. Output Impedance: 47 Kohms (600 ? min). Input sensitivity: 2-3mV. Output: 300mV (1.8V max). Gain: 40db S/N ratio: 85db. RIAA Accuracy: 1dB. Frequency Response: 20Hz to 20kHz +/- 0.5db. THD: 0.05%. Bandwidth: 20 to 100KHz (-3dB). Metal film Resistors 1% Vishay Capacitors 5% KEMET or WIMA. Very good quality PCB double Layer. DIP-8 op amp IC socket, you can easily replace the op amps. Input for Power on / off switch and Output for LED. Dimensions (WxHxD): 13,2 X 7,3 X 2,4 (transformer) cm. Pcb Colour: Blue or Green. 5 Years Warranty. WHAT'S INCLUDED 1 x Phono preamp assembled and tested. Power Supply. User guide (English) 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.