Excited to have another Tungsten Amps – Mosaic II in stock, this time around with a 10″ Speaker. Based on the classic 5F1 design, with a few modern refinements, this amps is is cathode biased, swapping power tubes to either 6V6s or 6L6s is just a matter of plugging them in. Check out all the specs on this great sounding combo over on the website.