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EL500 EL500 Tesla NOS Made in Czechoslovakia
RARE NOS CZECH STOCK — ORIGINAL BOX 💎 New Old Stock Tesla EL500 power tube, made in Czechoslovakia and preserved in unopened storage condition. A desirable European output tube for collectors and restoration-grade amplifier builds. Tube Details and Codes 📌 • Tube Type: EL500 power tube • Brand: Tesla • Origin: Made in Czechoslovakia • Condition: Original box, storage stock, unused Testing and Performance ⚡ • Verified New Old Stock condition • Factory-fresh, never put into service • Ideal for vintage amp restoration and long-term collection value Sonic Signature 🎵 • Known for refined output, solid drive, and classic European tube texture • Excellent choice for systems seeking vintage warmth, detail, and authoritative dynamics
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The Output Heritage Gallery
Explore a curated collection of legacy output tubes, where mid-century manufacturing mastery meets modern laboratory verification to ensure unwavering thermal stability and sonic precision.
Hover image to Zoom | -01KS7HXBE57ZGW8RCHZHTC5G05.jpg) EL500 EL500 Tesla NOS Made in Czechoslovakia | -01KS7MZNNWKSXE0TJ6894Z9NY8.jpg) EL41 6CK5 Valvo NOS D-Getter Siemens Made In Germany |  EL12 Tesla VINTAGE Pear-Shaped Smoky Glass Tested Good | -01KS7KVT29HKXBK549XZ5D4XVQ.jpg) EL95 6DL5 Siemens VINTAGE Tested Like NOS | -01KS7MTD94X8YW656GWMZEZXQF.jpg) AL4 Tesla VINTAGE Tested Czech Power Tube | -01KS7MP95R2TNHAND2NWC5KEVK.jpg) EL95 6DL5 Telefunken VINTAGE Diamond-Bottom Tested | -01KS7MWGP05CR3VKW49W6HSQBR.jpg) EBL21 Tesla VINTAGE Copper Base Output Tube | -01KS7MKNBZMV2XPAGESXQN4PGH.jpg) EL12 RFT VINTAGE German Power Tube Test Good |
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| Price | $73.00 | $108.00 | $84.00 | $73.00 | $82.00 | $79.00 | $84.00 | $84.00 |
| Origin & Factory | Czechoslovakia NOS | Siemens made Germany | Tesla Czech Republic | German vintage Siemens | Czech vintage Tesla | German Telefunken stock | European vintage Tesla | German vintage RFT |
| Stock Condition | new old stock | new old stock | single vintage tube | tested old stock | vintage stock | vintage rare stock | used tested stock | used vintage stock |
| Measured Performance | verified unused | verified unused NOS | tested good | tested like NOS | tested on tube tester | visually checked strong emission | verified working properly | tested good functional |
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