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

Tube Amp Doctor (TAD)
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Vacuum Tube - KT88-STR, Redbase, Tube Amp Doctor

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:
RoHS Compliant
Part Numbers
Single or MatchedOur Part Number
SingleT-KT88-STR-RB-TAD
Matched PairT-KT88-STR-RB-TAD-MP
Matched QuadT-KT88-STR-RB-TAD-MQ
Matched SextetT-KT88-STR-RB-TAD-MS
Matched OctetT-KT88-STR-RB-TAD-MO
Body HeightSingle versionT-KT88-STR-RB-TAD104 mm
Bulb TemperatureSingle versionT-KT88-STR-RB-TAD250°C
Cathode to Heater VoltageSingle versionT-KT88-STR-RB-TAD+250 V
D.C. Cathode Current, AF Power AmplifierSingle versionT-KT88-STR-RB-TAD230 mA
D.C. Plate Voltage, AF Power AmplifierSingle versionT-KT88-STR-RB-TAD800 V
Grid 1 (control) Voltage, AF Power AmplifierSingle versionT-KT88-STR-RB-TAD-200 V
Grid 1 Control Voltage, Class A1Single versionT-KT88-STR-RB-TAD-16 V
Grid 1 to Cathode, Grid 3, Grid 2, Base Sleeve, Heater CapacitanceSingle versionT-KT88-STR-RB-TAD< 15 pF
Grid 1 to Plate CapacitanceSingle versionT-KT88-STR-RB-TAD< 1.4 pF
Grid 2 Dc (screen) Dissipation, AF Power AmplifierSingle versionT-KT88-STR-RB-TAD8 W
Grid 2 Dc (screen) Voltage, AF Power AmplifierSingle versionT-KT88-STR-RB-TAD600 V
Grid 2 Screen Voltage, Class A1Single versionT-KT88-STR-RB-TAD250 V
Heater CurrentSingle versionT-KT88-STR-RB-TAD1.65 A
Heater VoltageSingle versionT-KT88-STR-RB-TAD5.8 V - 6.8 V, 6.3 V nominal
Item DiameterSingle versionT-KT88-STR-RB-TAD53 mm
Item HeightSingle versionT-KT88-STR-RB-TAD118 mm
Load ResistanceSingle versionT-KT88-STR-RB-TAD6 kΩ
Output Power (POut) @ 5% DistortionSingle versionT-KT88-STR-RB-TAD18.5 W
Peak AF Grid 1 Control VoltageSingle versionT-KT88-STR-RB-TAD15 V
Plate Dissipation, AF power amplifier (Wa)Single versionT-KT88-STR-RB-TAD42 W
Plate Voltage, class A1 (Ua)Single versionT-KT88-STR-RB-TAD400 V
Plate to Cathode, Grid 3, Grid 2, Base Sleeve, Heater CapacitanceSingle versionT-KT88-STR-RB-TAD< 12 pF
Signal Plate Current, Class A1, maximumSingle versionT-KT88-STR-RB-TAD105 mA
Transconductance (nominal)Single versionT-KT88-STR-RB-TAD10000 mS
Zero Signal Plate Current, Class A1Single versionT-KT88-STR-RB-TAD85 mA
Packaging Information
Packaging DimensionsMatched Octet versionT-KT88-STR-RB-TAD-MO5.905 in. × 10 in. × 5 in.
Matched Pair versionT-KT88-STR-RB-TAD-MP5.905 in. × 5 in. × 2.5 in.
Matched Quad versionT-KT88-STR-RB-TAD-MQ5.905 in. × 10 in. × 2.5 in.
Matched Sextet versionT-KT88-STR-RB-TAD-MS5.905 in. × 10 in. × 5 in.
Single versionT-KT88-STR-RB-TAD5.905 in. × 2.5 in. × 2.5 in.
Weight (Packaging)Matched Octet versionT-KT88-STR-RB-TAD-MO1.888 lbs.
Matched Pair versionT-KT88-STR-RB-TAD-MP0.472 lbs.
Matched Quad versionT-KT88-STR-RB-TAD-MQ0.944 lbs.
Matched Sextet versionT-KT88-STR-RB-TAD-MS1.416 lbs.
Single versionT-KT88-STR-RB-TAD0.236 lbs.
T-KT88-STR-RB-TAD - Single versionBody Height104 mm
Bulb Temperature250°C
Cathode to Heater Voltage+250 V
D.C. Cathode Current, AF Power Amplifier230 mA
D.C. Plate Voltage, AF Power Amplifier800 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 Amplifier8 W
Grid 2 Dc (screen) Voltage, AF Power Amplifier600 V
Grid 2 Screen Voltage, Class A1250 V
Heater Current1.65 A
Heater Voltage5.8 V - 6.8 V, 6.3 V nominal
Item Diameter53 mm
Item Height118 mm
Load Resistance6 kΩ
Output Power (POut) @ 5% Distortion18.5 W
Peak AF Grid 1 Control Voltage15 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, maximum105 mA
Transconductance (nominal)10000 mS
Zero Signal Plate Current, Class A185 mA
PDF: Datasheet for SingleT-KT88-STR-RB-TAD

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Specifications, Files, and Documents

PDF: Datasheet for Single (T-KT88-STR-RB-TAD)Datasheet for Single3.54 MB
Questions? Contact us at [email protected], or give us a call at 480-296-0890

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