very hard to find SILVER plates - I bought these 9 days ago(Audiogon) - they were NOS and now have about 30hrs. These were purchased from Brett Jesse - this is what he thinks of them:
Check out the Mazda 12AX7S silver plates for critical phono preamp or microphone preamp duties. These tubes are dead quiet, with a great sense of air and dynamics, with incredible speed and impact. The Philips Miniwatt series, usually made in the same Heerlen, Holland factory that produced the Amperex Bugleboy tubes, are a great alternative to the increasingly rare Bugleboy. They are identical internally, carry the same factory code markings, and sound the same. I will sell the pair for $$$ shipped to CONUSA including Paypal fee.
