i have used a teradak lps - excellent upgrade, makes the 2qute have a blacker background and a touch cleaner on transients - very cost effective too
am sure the other good lps units like pardo, small green computer, sbooster et al will manage the same over the stock switching unit
am sure the other good lps units like pardo, small green computer, sbooster et al will manage the same over the stock switching unit