RHB Sound Dezign located in Churchville, PA specializes in preamp and amplifier mods/repairs. I am not familiar with your Aloia preamp but you could contact Bob at (302) 723-7549 to see what he might be able to do for you. I have had Bob work on my cj preamp, performing extensive modifications and the attention to detail and handcrafted quality of his work is fantastic.
Bob is also the force behind Backert Labs. This company is where Bob offers his own proprietary preamp dezigns.
Good Luck!
