Vacuum Tube - KT88-STR, Redbase, Tube Amp Doctor

Name: Vacuum Tube - KT88-STR, Redbase, Tube Amp Doctor
Brand: Tube Amp Doctor (TAD)
SKU: T-KT88-STR-RB-TAD
Price: 67.50 USD
Availability: InStock

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Starting at: $67^.50

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The TAD KT88-STR Redbase® is built in the style of the early British MOV KT88 with the big and heavy glass envelope and beautifully polished metal base. The Redbase® features a gold control grid for outstanding performance and reliable stability. A breath-takingly big and precise tone and great appearance make the new TAD KT88-STR Redbase® the best choice for both, high-end audio applications and powerful bass guitar amps, providing a natural and three dimensional tone with pleasingly full warmth and fine, subtle highs.

A very musical response, with great sound and finest details in mids and top-end; a linear and harmonious overall response with a very organic tone, make the TAD KT88-STR Redbase® TAD’s favorite tube in the KT88 and 6550A class.

SKU:

T-KT88-STR-RB-TAD

Item ID:

047214

Brand:

Tube Amp Doctor (TAD)

Type:

Power

RoHS Compliant

Part Numbers
Single or Matched	Our Part Number
Single	T-KT88-STR-RB-TAD
Matched Pair	T-KT88-STR-RB-TAD-MP
Matched Quad	T-KT88-STR-RB-TAD-MQ
Matched Sextet	T-KT88-STR-RB-TAD-MS
Matched Octet	T-KT88-STR-RB-TAD-MO

Measurements by Type
Measurements by Item

Body Height	Single version	T-KT88-STR-RB-TAD	104 mm
Bulb Temperature	Single version	T-KT88-STR-RB-TAD	250°C
Cathode to Heater Voltage	Single version	T-KT88-STR-RB-TAD	+250 V
D.C. Cathode Current, AF Power Amplifier	Single version	T-KT88-STR-RB-TAD	230 mA
D.C. Plate Voltage, AF Power Amplifier	Single version	T-KT88-STR-RB-TAD	800 V
Grid 1 (control) Voltage, AF Power Amplifier	Single version	T-KT88-STR-RB-TAD	-200 V
Grid 1 Control Voltage, Class A1	Single version	T-KT88-STR-RB-TAD	-16 V
Grid 1 to Cathode, Grid 3, Grid 2, Base Sleeve, Heater Capacitance	Single version	T-KT88-STR-RB-TAD	< 15 pF
Grid 1 to Plate Capacitance	Single version	T-KT88-STR-RB-TAD	< 1.4 pF
Grid 2 Dc (screen) Dissipation, AF Power Amplifier	Single version	T-KT88-STR-RB-TAD	8 W
Grid 2 Dc (screen) Voltage, AF Power Amplifier	Single version	T-KT88-STR-RB-TAD	600 V
Grid 2 Screen Voltage, Class A1	Single version	T-KT88-STR-RB-TAD	250 V
Heater Current	Single version	T-KT88-STR-RB-TAD	1.65 A
Heater Voltage	Single version	T-KT88-STR-RB-TAD	5.8 V - 6.8 V, 6.3 V nominal
Item Diameter	Single version	T-KT88-STR-RB-TAD	53 mm
Item Height	Single version	T-KT88-STR-RB-TAD	118 mm
Load Resistance	Single version	T-KT88-STR-RB-TAD	6 kΩ
Output Power (POut) @ 5% Distortion	Single version	T-KT88-STR-RB-TAD	18.5 W
Peak AF Grid 1 Control Voltage	Single version	T-KT88-STR-RB-TAD	15 V
Plate Dissipation, AF power amplifier (Wa)	Single version	T-KT88-STR-RB-TAD	42 W
Plate Voltage, class A1 (Ua)	Single version	T-KT88-STR-RB-TAD	400 V
Plate to Cathode, Grid 3, Grid 2, Base Sleeve, Heater Capacitance	Single version	T-KT88-STR-RB-TAD	< 12 pF
Signal Plate Current, Class A1, maximum	Single version	T-KT88-STR-RB-TAD	105 mA
Transconductance (nominal)	Single version	T-KT88-STR-RB-TAD	10000 mS
Zero Signal Plate Current, Class A1	Single version	T-KT88-STR-RB-TAD	85 mA

Packaging Information
Packaging Dimensions	Matched Octet version	T-KT88-STR-RB-TAD-MO	5.905 in. × 10 in. × 5 in.
	Matched Pair version	T-KT88-STR-RB-TAD-MP	5.905 in. × 5 in. × 2.5 in.
	Matched Quad version	T-KT88-STR-RB-TAD-MQ	5.905 in. × 10 in. × 2.5 in.
	Matched Sextet version	T-KT88-STR-RB-TAD-MS	5.905 in. × 10 in. × 5 in.
	Single version	T-KT88-STR-RB-TAD	5.905 in. × 2.5 in. × 2.5 in.
Weight (Packaging)	Matched Octet version	T-KT88-STR-RB-TAD-MO	1.888 lbs.
	Matched Pair version	T-KT88-STR-RB-TAD-MP	0.472 lbs.
	Matched Quad version	T-KT88-STR-RB-TAD-MQ	0.944 lbs.
	Matched Sextet version	T-KT88-STR-RB-TAD-MS	1.416 lbs.
	Single version	T-KT88-STR-RB-TAD	0.236 lbs.

T-KT88-STR-RB-TAD - Single version	Body Height	104 mm
	Bulb Temperature	250°C
	Cathode to Heater Voltage	+250 V
	D.C. Cathode Current, AF Power Amplifier	230 mA
	D.C. Plate Voltage, AF Power Amplifier	800 V
	Grid 1 (control) Voltage, AF Power Amplifier	-200 V
	Grid 1 Control Voltage, Class A1	-16 V
	Grid 1 to Cathode, Grid 3, Grid 2, Base Sleeve, Heater Capacitance	< 15 pF
	Grid 1 to Plate Capacitance	< 1.4 pF
	Grid 2 Dc (screen) Dissipation, AF Power Amplifier	8 W
	Grid 2 Dc (screen) Voltage, AF Power Amplifier	600 V
	Grid 2 Screen Voltage, Class A1	250 V
	Heater Current	1.65 A
	Heater Voltage	5.8 V - 6.8 V, 6.3 V nominal
	Item Diameter	53 mm
	Item Height	118 mm
	Load Resistance	6 kΩ
	Output Power (POut) @ 5% Distortion	18.5 W
	Peak AF Grid 1 Control Voltage	15 V
	Plate Dissipation, AF power amplifier (Wa)	42 W
	Plate Voltage, class A1 (Ua)	400 V
	Plate to Cathode, Grid 3, Grid 2, Base Sleeve, Heater Capacitance	< 12 pF
	Signal Plate Current, Class A1, maximum	105 mA
	Transconductance (nominal)	10000 mS
	Zero Signal Plate Current, Class A1	85 mA