(!!!!!) (Best Pair) ECC801S=12AT7 Telefunken Germany <> bottom NOS triple mica 1962-1968 (9.2/9.0mA and 8.8/8.5mA)

1 low noise pair) ECC801S=12AT7 Telefunken Germany &lt;&gt; bottom NOS triple mica 1962-1968 very good printing 1 tube) 9.2/9.0ma Gm=5500/5300 (1968) 1 tube) 8.8/8.5ma Gm=5300/5200 (1962)   Matched on Amplitrex Good NOS Ma range 8-10ma 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