(!!!!!) (Best Pair) ECC803S=12AX7 Telefunken Ulm Germany <> bottom NOS 1961 (1.2/1.3ma and 1.2/1.4ma) 1-2% matched (Nagra, Lamm, VTL, Aesthetix, Diva)

1 low noise matched pair) ECC803S=12AX7 Telefunken Ulm Germany &lt;&gt; bottom Gold Pins NOS, made in Ulm Germany factory, original boxes, very good condition - very good printing 1-3% matched 1 tube) 1.2/1.3ma Gm=1700/1700 (U9201301n) 1961 1 tube) 1.2/1.4ma Gm=1600/1700 (U9201301n) 1961   Matched on Amplitrex Good NOS Gm range 1600+ Good NOS mA = 1ma+ Low Noise and not microphonic   Recommended for - Lamm Industries ML3 Signature mono amps - Nagra PL-L preamp - VTL 7.5 preamp - Conrad Johnson Premier 15 phono preamp - Jadis - Aesthetix - Diva Audio M7 preamp