Note: Price = one pair (2pcs)
1. Voice of Noble has newly developed Acme series electronic vacuum tubes;
2. Innovative filament processing technology, greatly improving the launch capability;
3. Make the sound extraordinary;
4.Replace all models and brands Electron tube
Maximum Rating
Ua………………………… 300 V
Pa………………………… 15 W
Rg
with cathode bias……… 0.5 MΩ
with fixed bias………… 0.05 MΩ
Direct Interelectrode capacitances
input…………………… 7.5 PF
output…………………… 16.5 PF
grid to plate…………… 5.5 PF
Static parameter
Ua………………………… 300 V
-Ug………………………… 45 V
Ia………………………… 60 mA
Gm………………………… 5.25 mA/V
ri………………………… 0.8 kΩ
μ………………………… 4.2
Pout………………………… 3.5 W
Recommended Operating Conditions
(reference value)
Class A1, single tube (fixed bias)
Ua………………… 250 V
-Ug…………………… 45 V
RL…………………… 2.5 kΩ
Ia(0)………………… 60 mA
Gm…………………… 5.25 Ma/V
ri…………………… 0.8 Kω
μ…………………… 4.2
Pout…………………… 3.5 W
Dtot…………………… 5 %
Class AB1
push-full (fixed bias)
Ua…………… 300 300 V
-Ug…………… 62 Rk=780Ω V
RL…………… 3 5 kΩ
üg(pk)……… 87 110 V
Ia(0)………… 80 80 mA
Ia(max.sig)… 140 100 mA
Pout……………15 10 W
Dtot…………… 2.5 5 %