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KT66-GE KT66GE Tube 1:1 KT66 Upgrade EL34 KT88 KT77 6L6 HiFi Audio Tube Amplifier DIY(2pcs Matched Pair)
KT66-GE KT66GE Tube 1:1 KT66 Upgrade EL34 KT88 KT77 6L6 HiFi Audio Tube Amplifier DIY(2pcs Matched Pair)
Preamps
Quantity
-
Detail
Preamps
Voltage
Voltage Ug2 250V
Current 85 mA
Ig2 (approx.) 6.3mA
-Ug1(approx.)15V
Voltage drop 6.3 mA/V
22.5K
Tempering 2.2K
Output power 7.25W
Total 9.0%
Ua,g2 400 250V
-Ug1 38 19V
Rk (per tube) 600 350
Turning radius 4.5 2.75 km
Current (0) 63 mA 60 mA
On resistance 5.5mA/V
14.5K
Output power 5.8W 2.2W
Total 7% 6.0%
Ua,g2 400 250V
-Ug1 38 20V
Rk (per tube) 600 360
RL 4 2.5k
Ia(0)2X 62.5mA2X 55mA
(g1-g1.pk) 80 volts 40 volts
Output power 14.5W 4.5W
Total 3.5% 4.5%
UA552450V
Ug2 525 425V
-Ug1 67 35V
INR 560
RL (amino acid) 8 7 k
(g1-g1.pk) 127 volts
Ia+g2(0)2×35 2×62.5 mA
Ig+Ig2 (maximum signal) 2×80 2×72.5mA
Pout 50 312W
Total 32% -
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