Search
Close this search box.
Ray Vacuum Tube – KT88 Select

Ray Vacuum Tube – KT88 Select

$124.95$599.95

SKU RKT88S Category Tags , , ,
Quantity:
Weight 20 kg
Dimensions 12 × 8 × 20 cm
Quantity

Single, Matched Pair, Matched Quad

Product highlights

  • Hand-selected and tested
  • Gold pins for corrosion resistance and excellent conduction
  • A substantial upgrade from standard NOS tubes
  • Low noise and microphonics
  • Matched quad (4 tubes) or pair (2 tubes) or single tube (1 tube)
  • Only 5% of the tubes commissioned for production meet our standards for gain and conductance matching
  • 12-month warranty against manufacturing defects

 

The Ray Tubes KT88 SELECT Vacuum Tube enhances your amplifier with exceptional improvements in clarity, texture, and detail, thanks to meticulous, engineer-led selection and gold pins for superior conductivity and durability. Designed to unlock your ampʼs hidden potential, these tubes transform its output far beyond the original sound profile, making them a substantial upgrade from standard NOS tubes.

Ray Tubes is revitalizing the vacuum tube market with hand-selected, rigorously-tested tubes, backed by a 1-year warranty that underscores the quality and reliability of their products.

Specifications

Specs

  • Tube Type: KT88
  • Tube Socket: 8-pin
  • Max Anode Dissipation Power: 42 W
  • Max Screen Dissipation Power: 8 W
  • Max Anode + Screen Dissipation Power: 46 W
  • Max Anode Voltage: 800 V
  • Max Screen Voltage: 600 V
  • Max Grid Voltage: ~200 V
  • Max Cathode Current: 230 mA
  • Heater Voltage: 6.3 V
  • Heater Current: 1.6 A
  • Transconductance: 12 mA/V
  • Amplification Factor: 8
  • Total Height: 119 mm

Tetrode Connection

  • Screen Voltage: 250 V
  • Anode Voltage: 250 V
  • Anode Current: 140 mA
  • Grid Voltage: 15 V
  • Grid Current: 3 mA
  • Internal Resistance: 12 kΩ
  • Amplification Factor: 8

Triode Connection

  • Anode Voltage: 250 V
  • Anode Current: 143 mA
  • Grid Voltage: 15 V
  • Internal Resistance: 670 Ω
  • Amplification Factor: 8

Compatible Amps

Please refer to this link: Tube Compatibility List (raytubes.audio)

What’s included

  • Set of four, two or single vacuum tube
  • User handbook featuring burn-in guidelines
  • Certificate of authenticity and warranty
Service center

8 800 555 04 71

Customer support

8 800 555 04 71