The Gustard P26 Preamplifier comes in a Class A fully balanced design with the left and right channels divided into regions to create a good separation between the two. It has a native fully balanced architecture that requires no conversion from input going to volume control and even to the amplifier circuit. The P26 comes equipped with two in-line OP Amps so that DIYers can replace them to play with the sound. It also has a discrete hybrid architecture that ensures circuit consistency. Finally, it also includes a diamond-shaped differential output stage, adjustable input/output stage gain, consistent and unbiased volume, and a customized 50W dedicated toroidal transformer. Apos Audio's research team found measurements done by Audio Science Review for the P26 here. Specs: Analog Inputs RCA: Input Impedance: 47K Input Sensitivity: 2 - 10 Vrms XLR 1/ XLR 2: Input Impedance: 47K Maximum Input Amplitude: +28 dBu (19 Vrms) @ IGAIN = 0dB Analog Outputs Frequency Response: 20-20 kHz +/- 0.1 dB SNR: 130 dB Channel Crosstalk: -130 dB @ 20-20 kHz THD + N :
