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V8 Vacuum Tube Tester with 8pin Probes for EL34 KT88 6L6 (6CA7, KT66, KT100) (KT120)

A reliable and customer-friendly tool for precise bias adjustments.

Frowse Rating8.6/10

Available in a range of sizes.

The V8 Vacuum Tube Tester accurately measures cathode current for bias readings in various tube types. Designed with an all-metal body and LED amp meter, it ensures reliable performance without conversion errors. Suitable for EL34, KT88, 6L6, and more, this tester is a valuable addition to any audio enthusiast’s toolkit.

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Frowse Rating 8.6/10

Best for: Audio enthusiasts and DIY tube amplifier builders

Our Review

The Vacuum Tube Tester Bias Probe is an essential tool for anyone working with vacuum tube amplifiers. With its global voltage compatibility and ability to measure cathode current directly, this tester streamlines the bias adjustment process significantly. Owners appreciate its effectiveness in providing accurate readings for power tubes, allowing for precise calibration that optimises both performance and fidelity.

This product is best suited for audio enthusiasts, technicians, and DIY builders who regularly work with tube amplifiers. Its thoughtful design and solid performance deliver exceptional value to both amateur and professional audio applications.

What we like

  • Global voltage compatibility (100V-240V)
  • Direct cathode current readings without conversion
  • Durable all-metal construction
  • LED Amp Meter provides superior visibility
  • Suits multiple power tube types (EL34, KT88, etc.)

Our verdict

A reliable and customer-friendly tool for precise bias adjustments.

Product Details

The V8 Vacuum Tube Tester operates on a global voltage standard of 100V to 240V. It features an octal 8pin probe with a cable length of 55 cm, facilitating easy testing of power tubes. The tester’s robust metal fuselage is complemented by a separate resin board, which prevents short circuits and ensures accurate readings. **Key Features:**
  • Direct reading from current meter, eliminating the need for conversion from mV to mA
  • LED amp meter offers better performance compared to traditional LCD
  • Includes 1 V8 tester body, 4 octal 8pin bias current probes, an AC/DC adapter, and a USB connecting line
**Usage Instructions:** 1. Turn off the amplifier. 2. Remove the tubes, then connect the tester probes to the sockets. 3. Power the tester through the amplifier socket, keeping the amplifier silent for accurate readings. 4. Allow the tubes to warm for approximately 5 minutes before reading the bias measurement. 5. Switch between A, B, C, and D to obtain four readings, ensuring no discrepancy greater than 2-3 mA for balance.
ASIN:
B07T72S2LR
Brand:
AMPTATA
MPN:
V8

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