Tung-Sol 5687 - "GL5687" - 1955 - "Rare D Getter" - Black Plates - Vintage Tube "Satisfaction Guaranteed"

One Tung-Sol 5687 Preamp Tube

Branded GE 5-Star Series — GL5687

Made in 1955 • Black Plate • Copper Grid Posts

Satisfaction Guaranteed

Rare D Getter (Horseshoe Getter)

Balanced Sections = Better Stereo Imaging

Original Box (Excellent Condition)

Stencils Look Sharp

Date Code: 5-13 = 1955 Production

NOS – New Old Stock

Tested Low Noise, No Shorts or Leakage

Inv. # 7-4 77758574

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🧠 AUDIOPHILE-GRADE 5687

This is one of the best-sounding GL5687 variants available:

• Ultra low noise

• Strong gm and mA readings

• Rare black plate + copper post build

🧪 **Test Results on Triplett 3444 Tester:**

Good Gm Range: >3500

Average New: ~5400

**This Tube: 7300 / 7300 Gm — 18mA / 18.5mA**

— About as strong and clean as they come

🎯 **Best Uses (Verify Compatibility):**

• Audio Note (certain models with 5687 modules)

• Audio Thrills Ultra-Linear Preamps

• ModWright SWL-9 (with optional 5687 board)

• Ray Samuels custom headphone amps

• Select Manley, Mastersound, and boutique tube gear

⚠️ Double check your amp or preamp’s tube chart before swapping in 5687 — not interchangeable with 12AX7, 12AU7, or 6922 tubes.

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🎶 Why This Tube Matters

This GL5687 delivers exceptional sonic texture, dynamics, and channel separation — ideal for high-end analog front ends. As word gets out, these are getting very hard to find in this condition and strength.

Packaged securely and shipped promptly.

Let me know if you want help matching another or checking socket compatibility.

Inv. # 7-4 77758574