Purchased from Amazon in January 2024. Used in a smoke-free environment. Power cable is unused, and the remote control was only used for function confirmation. Important Note: When using the P26 remote control, first press and hold the "AMP" button for 3 seconds or more to enter the P26 preamplifier operation mode. Class A full-balanced design. The left and right channels are divided into regions, providing good channel separation. Native full-balanced architecture. From input to volume control and circuit amplification, it's a complete 4-way architecture with no conversions. Large OLED display + full-function remote control operation, user-friendly design. Product Parameters: Analog Input (3 groups): RCA: Input impedance 47k Input sensitivity 2-10V rms XLR1 and XLR2: Input impedance 47k Maximum input amplitude +28dBu (19V rms) @ IGAIN = 0dB Analog Output (2 groups): Frequency Response: 20-20kHz / +-0.1dB SNR: 130dB Channel Crosstalk: -130dB @ 20-20kHz THD + N: <0.00035% 20-22kHzBW @ 18dBu IN & 18dBu OUT IMD (SMPTE): <0.0006% @ 18dBu IN & 18dBu OUT Maximum Distortion-Free Output Level: RCA Output: 9.5V rms XLR Output: +28dBu (19V rms) RCA Output Impedance: 100Ω XLR Output Impedance: 100Ω Other Parameters: Machine Size: Width 330 * Depth 260 * Height 65 MM (excluding protrusions) Packing Size: Length 420 * Width 360 * Height 175MM Packing Weight: 6.5KG AC Power: AC 115V / 230V 50 / 60Hz (manual adjustment) Total Power Consumption: <20W