Holton Audio will be releasing a brand new preamp design!. It will feature a fully discrete balanced Full Class A MOSFET design (No Opamps) with selectable feedback topology that will be switchable from the front panel and feature 3 modes of operation The 3 modes of operation will be Zero Feedback on Output Stage; 50% Feedback on Output Stage and Full Global Feedback on Output Stage. It will have is own fully discrete low noise regulated power supply on board and be a fully dual mono block design. More features and news to follow soon! Enquiries are Welcome!
Just Finished 10 x Gain Block One pre-amplifiers for one of our German OEM customers. Check out the SNR of these preamp modules measured at a gain of two over a 20hz - 20khz bandwidth. The noise even at higher gain settings only shifts less than 0.5dB. Signal to Noise Ratio of the Gain Block One is typically over -124dB Un-Weighted @ a THD+N of 0.00052%. Not a bad result!
See Link below. www.stereo.net.au/forums/topic/285144-a-holton-experience/