ShuGuang Treasure KT66-Z regular version a pair vacuum tube

Product Price: $119.23 USD

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  • Product Model: Model: MUIA983724
  • Product Weight: Shipping Weight: 2kg
  • Product Quantity: 4 Units in Stock

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   ShuGuang Treasure KT66-Z hifi Audio tube regular version a pair vacuum tube 100% brand new
The price is for 1 pair, if you buy 2pair(4pcs), we will
 send the Factory full matched tubes to you.
 










 
Declaration
 

Description:

Beam power tetrode KT66, limit its anode dissipation power is 25W, for A1, AB1 audio amplifier , AB2 class amplification .

Hot wire heating

U H ............ 6.3V
I H ............ 1.27A

Recommended operating status ( reference value )

Push-pull Class A1 zoom ( self-bias )

Ua ........................ 390    250 V
Ug2 ..................... 275     250 V
-Ug1 ..................... 22.5  17.5 V
Rk (per tube) ...... 500     200 Ω
RL (a-a) ............... 8         4 kΩ
ü (g1-g1.pk) ......... 70      36 V
Ia (0) ............... 2 × 52      2 × 81 mA
Ia (max.sig) ...... 2 × 62.5       2 × 82.5 mA
Ig2 (0) ............... 2 × 2.5    2 × 6 mA
Pout ..................... 30       17 W
Dtot ..................... 6          4%

Driving AB1 zoom , ultra- linear connection fixed bias

Self-bias Ua ..................... 552 --- 450 V
Ug2 .................. 525 --- 425 V
-Ug1 .................. 67 --- 35 VRk (pcr tube) ... ----- 560 Ω
RL (a-a) ............ 8 ----- 7 kΩ
ü (g1-g1.pk) ...... 127 ---- V
Ia + g2 (0) ............ 2 × 35 - 2 × 62.5 mA
Ia + g2 (max.sig) ... 2 × 80 - 2 × 72.5 mA
Pout ..................... 50 32 W
Dtot ..................... 3 --- 2%
UH ........................... 6.3 V

Limit Ratings
                       Tetrode connection      transistor connection
Anode voltage               500V                     400 V
Anode dissipation power     25W                       25W
The second gate voltage     400V
The second gate power dissipation 3.5W
Cathode Current                               200mA
Between hot wire cathode voltage  ± 100 V

The first gate resistor
Fixed bias 0.1 MΩ
Since the bias voltage 0.5 MΩ

Capacitances
                              Tetrode connection      transistor
The input capacitor                16PF                     8.7PF
Output capacitance                 11.5PF                 15.8 PF
Cross Road capacitance             1.1PF                    7.2-PF


Static parameters

Ua ................................. 250 V

Ug2 .............................. 250 V

-Ug1 .............................. 15 V

Ia ................................. 85 mA

Ig2 .............................. 6.3 mA

Gm .............................. 6.3 mA / V

ri ................................. 22.5 kΩ

RL ................................. 2.2 kΩ

Pout .............................. 7.25 W

Dtot .............................. 9.0%



This product was added to our catalog on Sunday 23 November, 2014.