| Lot Preamp Tubes 12ax7 12bh7 7025 5963 | $43.00 |
| Matched Pair 1957 RCA 12AX7 Audio Preamp Tubes | $36.00 |
| Matched Pair 1957 RCA 12AX7 Audio Preamp Tubes | $51.35 |
| Matched Pair 1960 Raytheon 12AX7 Audio Preamp Tubes | $16.50 |
| Matched Pair 1965 Sylvania 12AX7 Audio Preamp Tubes | $19.84 |
| Matched Pair 1965 Sylvania 12AX7 Audio Preamp Tubes | $22.01 |
| Matched Pair 1965 Sylvania 12AX7 Audio Preamp Tubes | $19.05 |
| Tung-Sol, Peta Labs, Shuguang 12AX7 preamp Tube Lot NR! | $18.00 |
| 2 TELEFUNKEN SM. PLT. 12AX7/ECC83 AUDIO PREAMP TUBES | $65.00 |
| Matched Pair 1957 RCA 12AX7 Audio Preamp Tubes | $51.35 |
| Matched Pair 1960 Raytheon 12AX7 Audio Preamp Tubes | $41.00 |
| Matched Pair 1960 Raytheon 12AX7 Audio Preamp Tubes | $25.07 |
| Matched Pair 1965 Sylvania 12AX7 Audio Preamp Tubes | $20.39 |
| VAA-L1 Tube Preamp uses 12ax7 wa sovtek tubes | $151.99 |
| Mesa Boogie 12AX7-A Preamp Tubes Russia | $30.06 |
| 3 VINTAGE TELEFUNKEN PREAMP TUBES ECC83 12AX7 ECC81 | $75.00 |
| Vintage Sylvania 7025 12AX7 ECC83 Matched Preamp Tube | $10.50 |
| 12AX7 SOVTEK PREAMP 7 TUBES !! OUT OF NEW AMP ECC83!! | $30.00 |
| 3 Mesa Boogie 12ax7-a Preamp tubes | $25.00 |
| 12AX7 ECC83 S JJ TESLA Tube Valve NEW PREAMP VALVE | $12.85 |
| JJ / Tesla 12AX7 S ECC83 S Preamp Tube NEW | $9.00 |
| 6 Vintage Preamp Tube Sheilds for 12AX7 12AU7 | $4.99 |
| 5 matched Telefunken 12AX7 / ECC83 preamp tubes | $149.50 |
| JJ / Tesla 12AX7 S ECC83 S Preamp Tube NEW | $10.50 |