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Ray Tubes - RESERVE KT88 Octal Dual Triode Vacuum Tube
SKU
RT-RV-KT88
Ray Tubes - RESERVE KT88 Octal Dual Triode Vacuum Tube is available to buy in increments of 1
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Ray Tubes - RESERVE KT88 Octal Dual Triode Vacuum Tube
The Ray Tubes RESERVE KT88 is a beam tetrode power tube made in small batches for hi-fi amplifiers designed to use KT88s. Ray Tubes hand-selects and tests each tube. The RESERVE design pairs gold-plated pins with Magic Coating, the company’s monocrystalline carbon treatment. raytubes.audio
The RESERVE KT88 has deep, controlled bass, a full midrange, and clear treble. Its voicing is suited to listeners who want to hear the texture of a vocal or string section as clearly as the impact of a drum hit. On recordings with large changes in volume, the manufacturer emphasizes a sense of scale and clear separation between instruments.
The RESERVE KT88 is available as a single tube or in sets of two or four. Ray Tubes publishes operating characteristics for tetrode and triode connections, with the amplifier circuit determining how the tube operates. Each package includes a handbook with burn-in guidance and a certificate of authenticity.
Features:
- KT88 beam tetrode for compatible hi-fi amplifier output stages
- Produced in small batches, then hand selected and tested
- Monocrystalline carbon Magic Coating
- Gold-plated pins help resist corrosion at socket contacts
- 8-pin octal base
- Available individually or in sets of two or four
Specifications:
| Tube Type | KT88 |
| Tube Socket | 8-pin octal |
| Maximum Anode Dissipation | 42 W |
| Maximum Screen Dissipation | 8 W |
| Maximum Combined Anode and Screen Dissipation | 46 W |
| Maximum Anode Voltage | 800 V |
| Maximum Screen Voltage | 600 V |
| Maximum Grid Voltage | Approximately 200 V (polarity unspecified) |
| Maximum Cathode Current | 230 mA |
| Heater Voltage | 6.3 V |
| Heater Current | 1.6 A |
| Transconductance | 12 mA/V |
| Amplification Factor | 8 |
| Tetrode Connection | Screen voltage: 250 V Anode voltage: 250 V Anode current: 140 mA Grid voltage: 15 V (polarity unspecified) Grid current: 3 mA Internal resistance: 12 kOhms Amplification factor: 8 |
| Triode Connection | Anode voltage: 250 V Anode current: 143 mA Grid voltage: 15 V (polarity unspecified) Internal resistance: 670 Ohms Amplification factor: 8 |
| Warranty | 1-year manufacturer warranty |
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