5670 396A 2C51 Raytheon VINTAGE Black Plate Matched Pair USA
RARE VINTAGE RAYTHEON MATCHED PAIR — ACTUAL PHOTO 💎 Classic American 5670 / 396A / 2C51 dual triodes with sought-after black-plate construction. Made in USA and tested strong on a TV-7, this pair is ideal for premium preamp, DAC, and line-stage applications. Tube Details and Codes 📌 • US tube types: 5670 / 396A / 2C51 • Brand: Raytheon • Construction: Black plate • Origin: Made in USA • Matching status: Matched pair Testing and Performance ⚡ • Tested strong on TV-7 • Emissions and shorts verified • Ready for high-end audio use • Condition reflects actual photos Sonic Signature 🎵 • Clean, articulate presentation with excellent detail retrieval • Strong dynamics and precise imaging • Vintage American tonal balance with excellent transparency
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