Products > Pre Amp Revalve Kits > Ampeg B15S Portaflex Series 1971 to 1977
These are specially selected preamp/front end sets are designed to get the most out of your amplifier. The sets consist of specially position selected pre amp valves that have been selected for each position in your amplifier. The valves have been specifically chosen as to their sound characteristics and function. We have kits such as Low gain, This to give the maximum clean headroom, Medium gain, to give a little more clarity in your sound, Standard gain, to give you a warm and fat overdrive and High gain to give you maximum over drive with the lowest noise. So you can the best set to suit your playing style.