RCA 6SL7GT 1956 Gray Glass "Bottom D Getter" NOS NIB Tube "Satisfaction Guaranteed"
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One RCA 6SL7GT Preamp Tube
NOS / NIB — Made in 1956
Satisfaction Guaranteed
Gray Glass • Black Plates • Bottom D Getter
Black Base with Silver Lettering
Date Code: KC = 1956
Original Box Included
This Tube Is New
Inv. # 7-4 77798948
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🧪 TEST RESULTS (Triplett 3444)
• Good Gm Range: > 1,000
• Average New Gm: ~1,600
• This Tube: 1700 / 1690 Gm
• Plate Current: 2.5 / 2.5 mA
• No Shorts or Leakage Detected
• Verified Low Noise
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🎯 RECOMMENDED AUDIO GEAR
This RCA 6SL7GT is well-suited for classic and modern tube gear using octal dual triodes:
• Ampeg Heritage B-15
• Alessandro Italian Greyhound
• Alessandro Black & Tan (2005)
• Almarro A318B
• Eddie Current headphone amps
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🧠 WHY THIS ONE STANDS OUT
• Black Plates for smoother mids
• Gray Coated Glass for reduced microphonics
• 1956 RCA build — a trusted era for classic 6SL7GT tone
• Bottom D Getter = traditional vintage structure
Packed securely. Shipped quickly. Stored upright.
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| Condition | Brand New (New) Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more |
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