ONE NEW RCA 7591A Tubes / Amplitrex Tested STRONG 💪 +100% / Oct 1968

- Best for collectors and vintage tube amplifier users needing a tested RCA 7591A replacement or upgrade component from the late 1960s.
- Stated as new; tube tested on Amplitrex AT-1000 in fixed bias mode with +100% plate current result (11520 micromhos @ 76.2mA), indicating strong output capability.
- Seller has 1355 feedback ratings at 100.0% positive, establishing consistent transaction history and buyer satisfaction.
- Free shipping included; in stock and ready to ship with no expedited options mentioned in listing.
- RCA branded 7591A manufactured October 1968; single tube unit with confirmed plate current and emissions test data on file.
- Before purchase, verify the tube's bias requirements match your amplifier's fixed-bias circuit and confirm pin condition by requesting close-up photos if not provided.