Features: Devices such as Viinyl phonograph turntables can only output low-level signals from RIAA. However, currently mostaudio devices can only process line level signals. Therefore, this product (HA150) needs to be used between the turntable andaudio devices (mixers, amplifiers, headphones, or recording devices) to reorganize and amplify the signal HA150 is a mini stereoHiFi phono preamplifier for turntable with DC12V power supply. Supports RCAturntable input, 6.5MM headphone output andRCA line output for powered speaker.Compact low noise phono turntable preamp that converts phono signals to line level signals. Enhances your Vinyl listeningexperience with the MiniAudio Phono Preamp. Convert low level signals from your turntable to line level signals for seamless integration with your audiodevices. Specifications: Model: HA150 Input interface: RCA lotus mouth Output interface: RCA lotus port/6.35mmAudio port Input impedance: approx 47KW MAX input level: -23.5 dBV@1khz Output impedance: approx 50W MAX output level:+ 11.5dBV@1khz Frequency response: RIAA Gain: 35dB Input sensitivity: 5.3 mV@1khz Power supply: DC12V Size:approx (length x width x height): 105x54x32mm/4.13x2.13x1.26in Power Adapter:EU/US/UK/AU Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1PC HA150 1PC 12V Power Adapter 1PC 2XRCACable