Please find review below:

AUDIA FLIGHT FLS-1 Pre and FLS-4 Power Amp review in ” The Ear ” Online Magazine, November 2024
https://the-ear.net/review-hardware/audia-flight-fls1-fls4-amps-on-message/
AUDIA FLIGHT FLS1 Stereo Preamplifier Review by Michael Fremer ” STEREOPHILE “ Magazine, March 2019
https://www.stereophile.com/content/audia-flight-fls1-preamplifier
Audia Flight FLS1 Specifications
Inputs 3 unbalanced RCA + 2 balanced XLR Outputs 1 balanced XLR + 1 unbalanced RCA
Gain range from -90 dB to +10 dB, step 0,5 dB
Frequency response 1 Hz ÷ 0,7 MHz (1 Vrms, –3 dB)
Slew-Rate > 100 V/µs (on 8 ohms)
THD < 0,05 %
S/N Ratio 98 dB
Input impedance Balanced or Unbalanced: 47 kohms Output impedance 5 ohms
Main voltage AC 240 V , 50/60 Hz
Stand-by Power consumption Less than 1W
Power consumption 50W
Dimensions and weigth 450x120x380mm (W x H x D) – 11 kg
Shipping dimensions and weigth 600x270x560mm (W x H x D) – 15 kg
– MM/MC phono board with unbalanced inputs $1,950
– MM/MC phono board with balanced inputs $1,950
– RCA board (2 RCA additional inputs) $900
– Optional DAC board (1 AES/EBU, 1 S/P-DIF, 2 TOSLINK, 1 USB 32/384 PCM and DSD 512) for FLS series $3,500