Fx-Audio Tube-01J Black Tube Preamp Line Amplifier Nfj Original Model Black NEW

$62.88 $37.73

New Gain Matched Quintet (5 pcs) Electro-Harmonix 12DW7 ECC832 Vacuum Tubes

$199.1 $119.46

High Voltage Vacuum Tube Preamplifier MINI 2J27S Heaterless Tube Preamp

$58.08 $34.85

Finished HiFi EL34-B Vacuum Tube Amplifier Class A Single-ended Stereo Power AMP

$330.0 $198.0

Hifi Stereo ECC82 vacuum Tube preamp base on US Conrad-Johnson PV12 preamplifier

$248.16 $148.9

TWO NIB RUBY 12AX75 Preamp Vacuum Tubes

$52.8 $31.68

RSD PCC88 Vintage Audio Preamp Tube in box TESTED & Guaranteed Valve Vacuum Tube

$31.68 $19.01

WESTINGHOUSE 12AU6 A 8426 VACUUM TUBE MATCH PAIR SUPER SWEET TONE

$3.51 $2.11

TUBE AMP IsoCorX VIBRATION ISOLATION DAMPERS FOR TURNTABLES-PREAMP-AMP

$21.12 $12.68

HIFI GE5654 Tube Phono Stage Preamp for Home Turntable Mini Stereo Headphone Amp

$123.2 $73.92

Matched Pair RCA 12AX7A ECC83 Life Test Excellent Test Emission Strong Tube

$86.64 $51.99

5 Pcs NOS GE 6JG5 - audio radio Preamp Tubes NIB

$13.2 $7.92

RCA 12AX7A ECC81 Vintage Preamp Vacuum Tube Tested Good for Guitar Amp USA

$24.64 $14.78

Matched Pair Sylvania 6189/12AU7WA/ECC83 Vacuum Audio Tube

$133.06 $79.84

GE 6SN7 GTB TUBE CHROME SIDED HALOS GRAY LADDER PLATES MATCHED Set of 3 TRIPLET

$52.18 $31.31

WURLITZER MODEL 1100 506 AMP, PRE AMP, VOLUME CONTROL CAP CAPACITOR KIT

$57.16 $34.3

New Plate Current Matched Pair (2) Tung-Sol Reissue 6L6G Fat Bottle Vacuum Tubes

$165.28 $99.17

Preamp Stereo Audio HiFi Tube Preamplifier 12AU7 12AX7 6Z4 Vacuum Tube US

$349.33 $209.6

(Free shipping) McIntosh C2200 Tube Pre Amplifier, Good Condition

$3760.33 $2256.2

JAN Sylvania 6189 Preamp hifi audio Tubes Matched Pair =12AU7 lightly used

$79.2 $47.52

Presonus Studio Channel Recording Vacuum Tube Mic Preamp+Boom Arm+Shield+Cables

$365.07 $219.05

Vintage General Electric 5751 Preamp Tube Valve GE 12AX7 #174

$35.01 $21.01

6C5 RCA White Letter Metal Audio Receiver Pre-Amp Vacuum Tubes Tested Pair

$19.36 $11.62

AC12V 6J1 Valve Pre-amp Tube Board Headphone Amplifier/Acrylic Case DIY Kits

$4.39 $2.63

Fender PR 246 Hot Rod Deluxe Guitar Amp 12" Tube Guitar, Foot Pedal,Instructions

$286.0 $171.6

Pair #2 12AT7 ECC81 Mullard Blackburn Code Tk3 B6F1 Tested Audio Amp Guitar Tube

$74.32 $44.59

ART TPS II Tube Preamp System TPSII

$255.2 $153.12

1 DuMontl 6SN7GTB Vacuum Tube - TALL BOTTLE - 1962 Vintage Audio Twin Triode

$17.61 $10.56

HiFi 12AX7 Vacuum Tube Preamp Stereo Audio Desktop Preamplifier Refer to Marantz

$208.56 $125.14

Brand New Matched Sextet (6) Electro-Harmonix 6SN7 Vacuum Tubes

$191.0 $114.6

TUBE AMP DOCTOR 12AX7 / ECC83-Cz PREMIUM SELECTED PREAMP TUBE NEW IN BOX

$39.56 $23.74

GE 12AU7 Tube Tested NOS Audio Guitar Amplifier Preamp Vacuum Tube Strong Grey P

$22.0 $13.2

6DJ8 ECC88 Amperex Dimpled Audio Receiver Pre-Amp Vacuum Tubes Tested Pair

$43.12 $25.87

RCA 5687 Black Plates AUDIO PREAMPLIFIER VACUUM TUBE Tested USA 4.2923-D

$16.68 $10.01

Luxman CL34 Tube Preamplifier control amplifier Working Vacuum Tube (8 Pieces)

$1032.14 $619.29

Phono Preamp for Turntable Stereo Tube Amplifier High Fidelity

$19.77 $11.86

EKJapan EK-JAPAN ELEKIT Vacuum Tube Pre-amp Kit Model: TU-8500 Preamplifier

$518.33 $311.0

Sun Audio Vacuum Tube Preamplifier SVC-200

$1485.44 $891.27

GE 6SN7 GTB TUBE CHROME SIDED HALOS GRAY LADDER PLATES MATCHED Set of 3 TRIPLET

$52.18 $31.31

HiFi Bluetooth 5.0 Tube Preamp USB DAC S/PDIF D/A Converter Headphone Amp DSD512

$181.98 $109.19

Closely Matched Pair RCA Radiotron UX 226 NOS Same Date Tested Very StrongTube

$51.44 $30.87

AC12V 2 CH 6J1 Valve Pre-amp Tube Board Headphone Amplifier DIY Acrylic Case Kit

$2.86 $1.72

Zhili Audio EAR-834 MM RIAA Tube Preamp Phono Kit

$175.96 $105.58

Tube-T5C HiFi Vacuum Tube Preamp Bluetooth 5.0 Receiver DAC Stereo Headphone Amp

$83.86 $50.32

Vintage Side Getter Clear Top 12AU7A ECC82 Pre Amp Vacuum Tube 82/88 TV-7

$15.4 $9.24

Korg TP-2 Tube/Valve 2ch Dual Microphone / Instrument Preamp and Compressor

$272.8 $163.68

U8 Audio Amplifier Bluetooth 5.1 Tube Preamplifier Headphone Amplifier in One

$134.41 $80.65

GE 5963 12AU7 Tube NOS NIB Vintage Guitar Amplifier Audio Preamp Tube Vacuum

$19.36 $11.62

Tung-Sol 12AT7 / 6201 New Production Preamp Vacuum Tube

$25.48 $15.29

TUBE 03 silver Vacuum Tube Hybrid Preamp with Tone Control Function from Japan

$100.32 $60.2

Phono Preamp for Turntable SUCA AUDIO 6a2 Vacuum Tubes MM RIAA Phonograph

$48.4 $29.04

Altec Lansing Model 440C Mono Tube Preamplifier Pair(Worldwide Shipping)

$4391.2 $2634.72

HiFi Vacuum Preamp Tube Stereo 4-way Audio Switcher Box Desktop Headphone Amp

$66.79 $40.07

Vintage Windings T-52 Vacuum Tube Pre-Amp Transformer Triad HS-52 Type OPT New!!

$308.0 $184.8

Peachtree Audio iDecco - Class A Tube Amplifier, DAC, iPod dock

$325.61 $195.36

A Vacuum Tube Preamp With Amazing High Sound Quality That Allows You To Easily E

$296.82 $178.09

EKJapan EK-JAPAN ELEKIT Pre-amp Kit TU-8500 White Silver Box JPN

$404.72 $242.83

BALANCED GAIN (92.4, 91) MAXI-PREAMP II TESTED SOVTEK 12AX7WC / ECC83 TUBE

$24.6 $14.76

ART TPS II 2-Ch V3 Valve Voicing Variable Impedance Tube Microphone Preamp

$255.2 $153.12

Counterpoint SA-1000 Dual Channel Hybrid Tube 12AX7 Tubes Preamplifier MINT

$1319.12 $791.48

Traverse Analogue 652 Dual-Channel Vacuum Tube Preamplifier #VK01422 (Used)

$1473.78 $884.27

1 x Philips ECC83 - 12AX7 Test STRONG Heerlen Preamp Dual Triode Vacuum Tube

$33.86 $20.32

NOS Philips Amperex 1965 NL Heerlen⊿ HolyGrail 6DJ8 ECC88 ~ DutchHouse AudioTube

$154.0 $92.4

Vacuum Pre-amp Hi-Fi Stereo Preamp Home Theater DIY Preamp Amplifier Board

$19.36 $11.62

G73R TUBE TELEFUNKEN GERMANY PREAMP TUBES MATCHED PAIR BLACK COATED G73-R G 73 R

$615.12 $369.08

YAQIN MS-12B Tube PreAmplifier/RIAA MS12B Brand New

$669.68 $401.81

Pre Amplifier Home Audio Tube Headphone Preamp Pre-amp for Turntable

$18.78 $11.27

Marantz Model 7K Vacuum Tube Stereo Preamplifier Vintage W/Cabinet Fully Works

$3429.36 $2057.62

Standard Tube Set for Marshall 2210 800W

$167.69 $100.62

AMPEG SVT-3 PRO 450-watt Tube Preamp Bass Head 450w Rackmount amp amplifier

$528.0 $316.8

Mullard EL34 Missed Key Code Xf2 B4H1 OO-Getter Tested Good Tube

$113.04 $67.83

McIntosh C11 Vacuum Tube Preamplifier Operation Confirmed Inspected Rare

$3122.24 $1873.35

Vintage CBS 5963/12AU7/ECC83 Preamp Vacuum Tube Valve- Bangybang.tube

$18.48 $11.09

24 Vintage 7-Pin & More Vacuum Tube Sockets for Preamp Tubes, Etc. New & Used

$61.6 $36.96

6J1 Tube Preamplifier Kit Diy Vacuum Pre Amp Board PRT-01A

$18.63 $11.18

HiFi Vacuum Preamp Tube Stereo 4-way Audio Switcher Box Desktop Headphone Amp US

$66.83 $40.1

Sylvania 6SN7WGTA Tested Like NOS Balanced Tube

$42.64 $25.59

6J1 Vacuum Tube Preamplifier for Headphones Low Noise High Fidelity Output

$8.13 $4.88

Sylvania 6SN7GT VT-231 NOS NIB Tested Strong Balanced Tube

$86.64 $51.99

Vacuum Pre-amp Hi-Fi Stereo Preamp Home Theater DIY Preamp Amplifier Board

$18.78 $11.27

XDUOO MT-604 6J1*4 Balanced Tube Pre-amp XLR/4.4MM Class-A Hybrid Amplifier

$133.76 $80.26

6C5 JAN CG GE NOS NIB Metal Audio Receiver Pre-Amp Vacuum Tubes Tested Pair

$22.0 $13.2

Closely Matched Pair GE 12AX7 ECC83 Short Grey Plate Tested Like NOS BalanceTube

$60.24 $36.15

RCA NOS 407/407A Halo Getter Twin Triode Vacuum Tube Electron Audio Preamp Amp

$7.04 $4.22

HIFI Upgraded MM RIAA EAR834 Turntable Preamplifier EH12AX7 Tube Phono Amplifier

$374.0 $224.4

Preamplifier for Home Theater System Pre-amp Record Player Tube

$18.78 $11.27

RCA 12SL7GT radio tube in original box, 12SL7 preamp vacuum tube, black plate

$11.0 $6.6

1pc PRT07B Tube Preamp/Vacuum Tube Phono Amplifier Tube Preamp Finished Board

$50.46 $30.28

Beyond Tube Preamp 2S Vacuum

$319.76 $191.86

Lot of 3 5881 Tested Good Tube

$33.84 $20.31

1 x NOS Mullard E88CC 6922 Gt Britain GoldPin ~ Holy Grail Preamp Audio Mic Tube

$259.61 $155.77

Zenith Preamp Vacuum Tube Gray Plate 14R7 Square Get

$10.06 $6.04

Closely Matched Pair 7581A 6L6GC Russia NOS Tested Strong Tube

$69.04 $41.43

MCINTOSH C220 VACUUM TUBE PREAMPLIFIER ORIGINAL ADVERTISEMENT & INFO PAGE J0719

$7.88 $4.73

XDUOO MU-603 DAC Decoder BT 5.1 Tube Preamplifier ES9018K2M for Amplifiers Wis

$104.72 $62.84

Lot of 3 (Trio) Matched Tung-Sol 6SN7GT Tested Balanced Tube

$60.24 $36.15

SYLVANIA 12SL7GT Foil Getter AUDIO Preamplifier VACUUM TUBE Tested USA Q.1362-D

$12.28 $7.37

Presonus Studio Channel Recording Vacuum Tube Mic Preamp+Boom Arm+Shield+Cables

$349.23 $209.54

Pro-Ject Tube Box S2 Phono Preamplifier Black Silver

$439.12 $263.48

Warm Audio WA-2MPX Dual-Channel Tube Mic Preamp - OPEN BOX

$1046.3 $627.78