This is a phono equalizer from the Australian manufacturer, Pro-Ject. I purchased it in August of this year and have been listening to it continuously. Input impedance, input capacitance, input gain, and subsonic settings can be adjusted on the front panel. ● Included: AC adapter, instruction manual ● Input terminals: 1 system (RCA unbalanced) ● Output terminals: 1 system (RCA unbalanced) ● Input impedance: 10Ω / 50Ω / 100Ω / 1kΩ / 47kΩ ● Input capacitance: 47pF / 147pF / 267pF / 367pF ● Gain: 40, 45, 50, 60, 65dB ● Dimensions/Weight: W206 x H71 x D194mm / 1.3kg ● RIAA deviation: 0.3dB / 20Hz - 20kHz ● Total Harmonic Distortion (THD+N): 0.00052% ● THD (Total Harmonic Distortion): < 0.02% ● S/N ratio: 80dB ('A' weighted) 40dB input I feel that this is the best sounding in this price range. It doesn't lose out at all in terms of detailed depiction and high S/N ratio compared to higher-end (hundreds of thousands of yen class) phono equalizers. The bass is also clear and not lacking. I wanted to keep it, but I'd like to try even more expensive products, so I'm putting it up for sale.