FEMTO offers the best Signal Recovery Amplifiers from DC to 2 GHz. The FEMTO amplifiers are always low noise and high gain regardless of their bandwidth.
DDPCA-300 with 0.2 fA (femto amp – 10^-15) noise levels and 10^13 gain at the low frequency end.
HSA-X-2-40 with 670 pV (pico volt – 10^-12) noise levels and 40dB VA gain at the 2GHz high frequency end.
And everything in between.