Soulution Audio 525 preamplifier
Image source — © Soulution Audio
Model name
525 preamplifier
Analog inputs (balanced)
2
Analog inputs (single-ended)
2
Analog outputs (balanced)
1
Analog outputs (single-ended)
1
Gain (dBu)
15
Input sensitivity (mV)
N/A
Output voltage (V)
N/A
Input impedance (balanced) (Ω)
820 000
Input impedance (single-ended) (Ω)
47 000
Output impedance (balanced) (Ω)
10
Output impedance (single-ended) (Ω)
10
Maximum output level (balanced) (dBu)
16
Maximum output level (single-ended) (dBu)
8
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
0
Frequency response high +/- 3dB (Hz)
2 000 000
Signal to Noise Ratio (SNR, unweighted) (dB)
120
Total Harmonic Distortion + Noise (THD+N) (%)
< 0.00009
Dimensions (mm)
442 × 143 × 448
Weight (kg)
20
Official link
The device operates in the frequency range from 0 Hz to 2 MHz. Speaking of switching capabilities, the amplifier is equipped with a pair of balanced XLR inputs, a pair of unbalanced RCA, one balanced XLR output and one unbalanced RCA.
The innovative input stage of the 727 preamp provides exceptional common-mode signal suppression without compromising the input stage due to noise. This is achieved using parallel instrument amplifiers designed for a wide bandwidth (20 MHz), the lowest noise level (noise density < -160 dBV/√Hz) and optimal common-mode signal suppression (CMMR >105 dB). This ensures that even the weakest musical signals are correctly received by the 727 preamp.