Home / 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)
  • 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)

KT66-GE KT66GE Tube 1:1 KT66 Upgrade EL34 KT88 KT77 6L6 HiFi Audio Tube Amplifier DIY(2pcs Matched Pair)

Preamps
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  • 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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