Vacuum Tube - KT88, JJ Electronics
Click to zoom in
Product Options
- Apex Matched Quad (T-KT88-JJ-MQ)
This product has substitutes available! Check them out.
The JJ Electronic KT88 is a sonically faithful reproduction of the original tubes with a robust construction encased in a thick glass envelope. The JJ KT88 delivers a powerful 42 Watts with plenty of headroom to spare. This tube has a tone that is warm and lively with a detailed and balance response. The JJ KT88 is an excellent choice for Hi-Fi stereo equipment as well as guitar amplifiers. It can be used in place of 6550 tubes.
Matched versions of this tube use Apex Matching
RoHS Compliant
Accessory Items:
| Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Apex Matched Pair | T-KT88-JJ-MP | 609722123235 | |
| Apex Matched Quad | T-KT88-JJ-MQ | 609722123242 | |
| Apex Matched Sextet | T-KT88-JJ-MS | 609722123259 | |
| Single | T-KT88-JJ | 609722123228 | KT88 |
| Body Height | 110 mm | |
| Cathode Current (Ik) | ≤ 230 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 8 | |
| Grid 1 voltage (Ug1) | -15 V typical | |
| Grid 2 current (Ig2) | ≤ 7 mA | |
| Grid 2 dissipation (Wg2) | 8 W | |
| Grid 2 voltage (Ug2) | ≤ 600 V, 250 V typical | |
| Grid capacitance (cg1) | 16.5 pF | |
| Grid to Plate Capacitance (ca/g) | 2.3 pF | |
| Internal Resistance (Ri) | 12 kΩ | |
| Item Diameter | 52 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 10 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 42 W | |
| Plate Voltage (Ua) | ≤ 800 V, 250 V typical | |
| Transconductance (S) | 11.5 mA/V |
| Packaging Dimensions | Apex Matched Pair version | T-KT88-JJ-MP | 5.3 in. × 4.5 in. × 2.3 in. |
| Apex Matched Quad version | T-KT88-JJ-MQ | 5.3 in. × 4.5 in. × 4.5 in. | |
| Apex Matched Sextet version | T-KT88-JJ-MS | 6.8 in. × 5.3 in. × 4.5 in. | |
| Single version | T-KT88-JJ | 2.3 in. × 2.3 in. × 5.1 in. | |
| Weight (Packaging) | Apex Matched Pair version | T-KT88-JJ-MP | 0.54 lbs. |
| Apex Matched Quad version | T-KT88-JJ-MQ | 1.08 lbs. | |
| Apex Matched Sextet version | T-KT88-JJ-MS | 1.62 lbs. | |
| Single version | T-KT88-JJ | 0.27 lbs. |
| T-KT88-JJ-MP - Apex Matched Pair version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 230 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 8 | |
| Grid 1 voltage (Ug1) | -15 V typical | |
| Grid 2 current (Ig2) | ≤ 7 mA | |
| Grid 2 dissipation (Wg2) | 8 W | |
| Grid 2 voltage (Ug2) | ≤ 600 V, 250 V typical | |
| Grid capacitance (cg1) | 16.5 pF | |
| Grid to Plate Capacitance (ca/g) | 2.3 pF | |
| Internal Resistance (Ri) | 12 kΩ | |
| Item Diameter | 52 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 10 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 42 W | |
| Plate Voltage (Ua) | ≤ 800 V, 250 V typical | |
| Transconductance (S) | 11.5 mA/V | |
| T-KT88-JJ-MQ - Apex Matched Quad version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 230 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 8 | |
| Grid 1 voltage (Ug1) | -15 V typical | |
| Grid 2 current (Ig2) | ≤ 7 mA | |
| Grid 2 dissipation (Wg2) | 8 W | |
| Grid 2 voltage (Ug2) | ≤ 600 V, 250 V typical | |
| Grid capacitance (cg1) | 16.5 pF | |
| Grid to Plate Capacitance (ca/g) | 2.3 pF | |
| Internal Resistance (Ri) | 12 kΩ | |
| Item Diameter | 52 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 10 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 42 W | |
| Plate Voltage (Ua) | ≤ 800 V, 250 V typical | |
| Transconductance (S) | 11.5 mA/V | |
| T-KT88-JJ-MS - Apex Matched Sextet version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 230 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 8 | |
| Grid 1 voltage (Ug1) | -15 V typical | |
| Grid 2 current (Ig2) | ≤ 7 mA | |
| Grid 2 dissipation (Wg2) | 8 W | |
| Grid 2 voltage (Ug2) | ≤ 600 V, 250 V typical | |
| Grid capacitance (cg1) | 16.5 pF | |
| Grid to Plate Capacitance (ca/g) | 2.3 pF | |
| Internal Resistance (Ri) | 12 kΩ | |
| Item Diameter | 52 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 10 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 42 W | |
| Plate Voltage (Ua) | ≤ 800 V, 250 V typical | |
| Transconductance (S) | 11.5 mA/V | |
| T-KT88-JJ - Single version | Body Height | 110 mm |
| Cathode Current (Ik) | ≤ 230 mA | |
| Filament Current (If) | 1.6 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 8 | |
| Grid 1 voltage (Ug1) | -15 V typical | |
| Grid 2 current (Ig2) | ≤ 7 mA | |
| Grid 2 dissipation (Wg2) | 8 W | |
| Grid 2 voltage (Ug2) | ≤ 600 V, 250 V typical | |
| Grid capacitance (cg1) | 16.5 pF | |
| Grid to Plate Capacitance (ca/g) | 2.3 pF | |
| Internal Resistance (Ri) | 12 kΩ | |
| Item Diameter | 52 mm | |
| Item Height | 125 mm | |
| Plate Capacitance (ca) | 10 pF | |
| Plate Current (Ia) | 140 mA | |
| Plate Dissipation (Wa) | ≤ 42 W | |
| Plate Voltage (Ua) | ≤ 800 V, 250 V typical | |
| Transconductance (S) | 11.5 mA/V |
 Specification Sheet | All Models |
My Project Lists
Specifications, Files, and Documents
Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
