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5691/6SL7GT RCA Red Base High Mu Twin Triode Tube. The red base 5691 is a premium 6SL7 made to last over 10,000 hours and produce low noise. We have a couple of
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![NOS RCA JAN-CRC-5692 [6SN7] Black Plate 3 Mica Red Base S-Rods Vacuum Tube | Reverb](https://images.reverb.com/image/upload/s--KMQ9VcyV--/a_exif,c_limit,e_unsharp_mask:80,f_auto,fl_progressive,g_south,h_620,q_90,w_620/v1479501764/u03vnwyx7id7g3rn0zvq.jpg "NOS RCA JAN-CRC-5692 [6SN7] Black Plate 3 Mica Red Base S-Rods Vacuum Tube | Reverb")
NOS RCA JAN-CRC-5692 [6SN7] Black Plate 3 Mica Red Base S-Rods Vacuum Tube | Reverb
World Best NOS 5692 6SN7 RCA Red Base Dual Triode Perfect Matched Pair Power Audiophile Tubes
