If Blue Torii MK1 and any other amp owners who have solid state rectifiers want a cheap thrill, buy 4 of these
http://www.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&... and have them installed in place of whatever you're using. Just installed four today and they have nicely made a fine amp much finer. Everything is improved. Imaging, coherency, detail, listenability, high-end sweetness, realism, dynamics, timbral accuracy, naturalness, ability to focus easily on any instrument in an orchestra. These rectifiers only come in a T0-220 package form, but a little attention to detail and anyone who can hold a soldering iron can do this. These are Cree Silicon Carbide Schottky diodes. The 600V model chosen as it has better specs on reverse current leakage vs the 1200v model. Next, massive 10amp model chosen not because anywhere near 10 amps is needed, but because this is the one with the most internal capacitance at 480pF every time the rectifier goes to 0 volts -- like having a best snubber circuit built-in.
These rectifiers made more difference than any other mod in my Blue Torii amp and that includes using big $ buck vintage gold pin input tubes and total cost including shipping less than $25. for all four of these diode rectifiers. I am now more sold than ever that best solid state rectification is darn fine in tube amps. And these rectifiers should stay great or maybe even break-in and sound slightly better with time. Tube rectifiers, if great, may sound as great, but are always getting worse from day one.
I am convinced now that this Blue Torii is ready to be A-B'd against anything -- and likely win the contest. It is SO much better than my Select which was a very fine amp. This one has more detail and dynamic realism - nice!