Amazon.com: Rodyweil Microphone Preamp Mic Gain Booster with 2 Input Max 75db Gain 48V Phantom Power XLR Output for Dynamic and Condenser Mic : Musical Instruments
Dynamic Microphone Preamplifier – Rugged Radios
Sound Skulptor: MP566 Tube microphone preamplifier for the '500' Lunchbox - Kit, Preamplifiers, MP566
Sound Skulptor: MP512 Microphone preamplifier for the '500' Lunchbox - Kit, Preamplifiers, MP512