Experience legendary tone and dynamic response with the Genalex Gold Lion KT66—one of the most sought-after power tubes for vintage and modern amplifiers. Engineered to original British specifications, these tubes deliver creamy overdrive, rich harmonics, and articulate lows, making them the perfect choice for classic rock, blues, and high-fidelity audio applications.

Key Features:

• Premium KT66 Power Tube – Faithful recreation of the original British Genalex design.
• Rich, Warm Tone – Known for its smooth highs, punchy mids, and deep bass response.
• Upgraded Construction – Gold Lion KT66 tubes are built with heavy-duty glass, improved internal structure, and gold-plated grid wires for enhanced performance and longevity.
• Matched & Burned In – Each tube undergoes a rigorous burn-in and matching process for consistent output and balance.
• Perfect for Guitar & Hi-Fi – Delivers exceptional clarity, warmth, and headroom in both amplifier and high-fidelity stereo applications.

Available in:

✔ Single Tube
✔ Matched Pair (2 Tubes)
✔ Matched Quad (4 Tubes)

Compatibility:

✔ Ideal for vintage & modern KT66 amplifiers
✔ Perfect replacement for Marshall JTM45, Bluesbreaker, and other British-style amps
✔ Compatible with high-fidelity tube stereo systems

Specifications:

• Tube Type: KT66
• Base: Octal
• Plate Dissipation: 25W
• Application: Guitar amplifiers, Hi-Fi audio systems

Important Notes:

⚠ Professional Installation Recommended – Proper biasing is required when replacing power tubes to ensure optimal performance and longevity.
⚠ Non-Refundable – Due to the nature of vacuum tubes, this item is non-returnable.
⚠ Pre-Order Information – If the item is on pre-order, please contact us for lead times. Otherwise, we’ll fulfill your order as quickly as possible.

Why Choose British Audio?

At British Audio, we are Nashville’s trusted source for high-quality vacuum tubes and amplifier service. We carefully test, match, and burn in each tube to ensure exceptional reliability and performance.

Upgrade your amp’s tone with the legendary warmth of the Genalex Gold Lion KT66—order yours today!