(!!!!) (Recommended Single) ECC801S=12AT7 Telefunken Germany <> bottom NOS 1966 with warranty sheet (8.5/9.8ma)
1 low noise tube) ECC801S=12AT7 Telefunken Germany <> bottom NOS 1966 with warranty sheet - "1" and "E" wiped off glass
1 section) 8.5ma Gm=5300
1 section) 9.8ma Gm=5600
Tested on Amplitrex
Good NOS Ma range 7-10ma
Good NOS Gm range 4500-5500
(transparent and open with very good speed and high end extension, accurate bass but not overemphasized, extremely low noise, very neutral, accurate, balanced, un-colored sound, work well in DACS and linestages, 10,000+ hour lifespan)
- Audio Synergy preamp (2013) - Doshi Alaap Mk 2 preamp - Manley - VTL - Earmax Silver Edition - Lector CDP 0.6T - APEX 460 sub for 12AX7 - WAVAC 805 SE amp - Kora integrated amp - TUBE MICS - MAC MA2275 - VTL S-400 amp - VTL Deluxe 300 amps


