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Vacuum Tube - KT66, JJ Electronics

Starting at: $39^.95

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The JJ Electronic KT66 is a sonically faithful reproduction of the original tubes with a robust construction encased in a thick glass envelope. The JJ KT66 delivers a powerful 25 Watts with plenty of headroom. This tube has a tone that is warm, thick, and straightforward. With a more balanced sound than the 6L6GC, the JJ KT66 is an excellent choice for a full bodied tone.

Matched versions of this tube use Apex Matching

RoHS Compliant

SKU:

T-KT66-JJ

Item ID:

004871

Brand:

JJ Electronics, Apex Matched

Type:

Power

Part Numbers
Single or Matched	Our Part Number	UPC/EAN
Apex Matched Pair	T-KT66-JJ-MP	609722123136
Apex Matched Quad	T-KT66-JJ-MQ	609722123143
Single	T-KT66-JJ	609722123129

Measurements by Type
Measurements by Item

Product Measurements by Type
Body Height		110 mm
Cathode Current (I_k)		≤ 150 mA
Filament Current (I_f)		1.3 A
Filament Voltage (U_f)		6.3 V
Grid 1 voltage (U_g1)		≥ -200 V, -15 V typical
Grid 2 current (I_g2)		≤ 7 mA
Grid 2 dissipation (W_g2)		3.5 W
Grid 2 voltage (U_g2)		≤ 550 V, 250 V typical
Grid capacitance (c_g1)		16 pF
Grid to Plate Capacitance (c_a/g)		2.3 pF
Internal Resistance (R_i)		22.5 kΩ
Item Diameter		52 mm
Item Height		125 mm
Plate Capacitance (c_a)		10 pF
Plate Current (I_a)		85 mA
Plate Dissipation (W_a)		≤ 25 W
Plate Voltage (U_a)		≤ 550 V, 250 V typical
Transconductance (S)		6 mA/V

Packaging Information
Packaging Dimensions	Apex Matched Pair version	T-KT66-JJ-MP	5.3 in. × 4.5 in. × 2.3 in.
	Apex Matched Quad version	T-KT66-JJ-MQ	5.3 in. × 4.5 in. × 4.5 in.
	Single version	T-KT66-JJ	2.3 in. × 2.3 in. × 5.3 in.
Weight (Packaging)	Apex Matched Pair version	T-KT66-JJ-MP	0.512 lbs.
	Apex Matched Quad version	T-KT66-JJ-MQ	1.024 lbs.
	Single version	T-KT66-JJ	0.256 lbs.

Product Measurements by Item
T-KT66-JJ-MP - Apex Matched Pair version	Body Height	110 mm
	Cathode Current (I_k)	≤ 150 mA
	Filament Current (I_f)	1.3 A
	Filament Voltage (U_f)	6.3 V
	Grid 1 voltage (U_g1)	≥ -200 V, -15 V typical
	Grid 2 current (I_g2)	≤ 7 mA
	Grid 2 dissipation (W_g2)	3.5 W
	Grid 2 voltage (U_g2)	≤ 550 V, 250 V typical
	Grid capacitance (c_g1)	16 pF
	Grid to Plate Capacitance (c_a/g)	2.3 pF
	Internal Resistance (R_i)	22.5 kΩ
	Item Diameter	52 mm
	Item Height	125 mm
	Plate Capacitance (c_a)	10 pF
	Plate Current (I_a)	85 mA
	Plate Dissipation (W_a)	≤ 25 W
	Plate Voltage (U_a)	≤ 550 V, 250 V typical
	Transconductance (S)	6 mA/V
T-KT66-JJ-MQ - Apex Matched Quad version	Body Height	110 mm
	Cathode Current (I_k)	≤ 150 mA
	Filament Current (I_f)	1.3 A
	Filament Voltage (U_f)	6.3 V
	Grid 1 voltage (U_g1)	≥ -200 V, -15 V typical
	Grid 2 current (I_g2)	≤ 7 mA
	Grid 2 dissipation (W_g2)	3.5 W
	Grid 2 voltage (U_g2)	≤ 550 V, 250 V typical
	Grid capacitance (c_g1)	16 pF
	Grid to Plate Capacitance (c_a/g)	2.3 pF
	Internal Resistance (R_i)	22.5 kΩ
	Item Diameter	52 mm
	Item Height	125 mm
	Plate Capacitance (c_a)	10 pF
	Plate Current (I_a)	85 mA
	Plate Dissipation (W_a)	≤ 25 W
	Plate Voltage (U_a)	≤ 550 V, 250 V typical
	Transconductance (S)	6 mA/V
T-KT66-JJ - Single version	Body Height	110 mm
	Cathode Current (I_k)	≤ 150 mA
	Filament Current (I_f)	1.3 A
	Filament Voltage (U_f)	6.3 V
	Grid 1 voltage (U_g1)	≥ -200 V, -15 V typical
	Grid 2 current (I_g2)	≤ 7 mA
	Grid 2 dissipation (W_g2)	3.5 W
	Grid 2 voltage (U_g2)	≤ 550 V, 250 V typical
	Grid capacitance (c_g1)	16 pF
	Grid to Plate Capacitance (c_a/g)	2.3 pF
	Internal Resistance (R_i)	22.5 kΩ
	Item Diameter	52 mm
	Item Height	125 mm
	Plate Capacitance (c_a)	10 pF
	Plate Current (I_a)	85 mA
	Plate Dissipation (W_a)	≤ 25 W
	Plate Voltage (U_a)	≤ 550 V, 250 V typical
	Transconductance (S)	6 mA/V

Specification Sheet	All Models

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Specification Sheet

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