RCA Triple Black Plate 6CG7/6FQ7 Vacuum Tube Premium Audio Tubes In Wrong Box

$31.68 $19.01

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

$191.0 $114.6

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

$330.0 $198.0

Gain Matched Quad (4) JJ 6922 / E88CC / 6DJ8 / ECC88 Vacuum Tubes - Brand New

$105.54 $63.33

1 x USA 12AU7 preamp tube, Tested Good !

$7.5 $4.5

HiFi 12AT7 Vacuum Tube Preamplifier Board Base On Hetian Mau's Preamp Circuit

$36.96 $22.18

Brand New Current Matched Pair (2) Electro-Harmonix EL84 6BQ5 Vacuum Tubes

$50.6 $30.36

Standard Tube Set for Manley VOXBOX

$60.59 $36.36

Vintage Webcor 12AU7/ECC82/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$29.57 $17.75

6AU6 Vacuum Tube GE EF94 6AU6A Vintage Radio Amp Mixer Preamps Ham Amateur Radio

$7.92 $4.75

ART TPS II Tube Preamp System TPSII

$255.2 $153.12

3 tested Federal vacuum tube preamp power transformer 120:120+75

$26.4 $15.84

Matched Pair Raytheon 6JE6C 6LQ6 Japan LIFE TEST Great Emission 100% Tube

$77.84 $46.71

Sylvania 6SN7GTB Chrome Dome Angled "T" Plate Tubes PLATINUM MATCHED on AT1000

$52.51 $31.51

New Current Matched Quad (4) Psvane KT88-T Classic MKII II Series Vacuum Tubes

$405.28 $243.17

Studio Projects Vtb1 Tube Microphone Preamp used JAPAN F/S

$234.96 $140.98

GE 6SN7 GTB TUBE CHROME SIDED HALOS GRAY LADDER PLATES MATCHED QUAD Set of (4)

$82.1 $49.26

Conrad Johnson PV2a Vacuum Tube Pre-Amplifier Stereo

$1320.0 $792.0

6DJ8 / ECC88 SIEMENS Vintage Tube-Used w-Gray Plate & O Getter-Made in Germany

$22.0 $13.2

Closely Matched Pair RCA 6A3 Same Date NOS NIB LIFE TEST Great Tube

$130.64 $78.39

AUDIO RESEARCH GSPre Reference Preamplifier

$6732.0 $4039.2

FX-Audio Tube-02 Pro Class A Tube Headphone Amplifier, Vacuum 5725 Tube Pream

$57.2 $34.32

PreSonus BlueTube DP V2 2-Channel Mic/Instrument Tube Preamp

$224.4 $134.64

Audio Research SP-3-A1 Tube Stereo Preamplifier in Box - Wonderful

$2463.12 $1477.88

New Gain Matched Quad Electro-Harmonix 7025 (low noise 12AX7) Vacuum Tubes

$110.42 $66.25

Sylvania 6SN7GTB Chrome Dome Angled "T" Plate Tubes PLATINUM MATCHED on AT1000

$52.51 $31.51

Vintage Adirmal 12AU7/ECC83/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$29.57 $17.75

Closely Matched Pair Sylvania 6F8G Tested Like NOS Balanced Tube

$121.84 $73.11

Matched Pair TungSol 12AU7/ECC83/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$103.49 $62.1

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

$57.16 $34.3

NAD PP4 Digital Phono USB Preamplifier

$83.6 $50.16

6J1 Valve Preamp, Vacuum Electrom Tube Preamp Valve Preamp Amplifier Board Au...

$22.13 $13.28

Dynaco PAS-3X Tube preamplifier with case, tested and energized shipping from jp

$699.6 $419.76

6AB4 Vacuum Tubes - Various Brands - $3.50/ea (TESTED & GUARANTEED)

$2.31 $1.39

5 Pcs NOS GE JAN 6AH6WA audio radio Preamp Tubes NIB

$17.6 $10.56

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

$1473.78 $884.27

Lot Of 4 GE 6DJ8 / ECC88 Smoke Glass Preamp Vacuum Tubes Tested Strong 3 Avail

$35.21 $21.12

NOS Gain Tested Voskhod Soviet 6N1P-EV / EB [6DJ8] SILVER SHIELD Vacuum Tube

$11.4 $6.84

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

$314.3 $188.58

Pro-Ject Tube Box S2 Phono Preamplifier Black Silver

$439.12 $263.48

Vintage Siemens ECC81 Preamp Tube Short Grey Plate 12AT7 Valve #46

$26.04 $15.62

1 PCS PSVANE ECC82 Preamplifier Tube Amplifier Vacuum Tube Replace 12AU7 Tube

$27.28 $16.37

Vintage RCA USA 12AT7C ECC81 Preamp Vacuum Tube Used & Tested

$15.84 $9.5

Universal Audio 710 Twin-Finity Tube/Solid-State PREAMP DEMO - PERFECT CIRCUIT

$623.92 $374.36

Bellari PA555 Tube Preamp with 3-line-inputs AUTHORIZED-DEALER 100-240v capable

$242.0 $145.2

High 2AX7B ECC83 Vacuum Tube tube of audio for Pre-amp

$15.59 $9.36

2 Rare TrueNOS SealedBox Matsu/Mullard 12BH7A AudioTubes ~ Grail 12AU7 ECC82 Sub

$259.61 $155.77

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

$18.81 $11.29

Sylvania 6SN7GTB Chrome Dome Angled "T" Plate Tubes PLATINUM MATCHED on AT1000

$52.51 $31.51

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

$60.59 $36.36

WAITING AUDIO MODEL-1 pre-amplifier (vintage Western Electric transformer)

$704.0 $422.4

6072 GE BLACK PLATE 5-STAR 3 MICA VINTAGE TUBE 12AY7 NOS NIB (1974) #2 *eTRACER*

$191.4 $114.84

DC 12V-16V HiFi 6K4 Tube Preamplifier Tube Preamp Audio Amp Home Theater DIY

$20.52 $12.31

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

$19.59 $11.75

Mullard GZ37 CV378 Label Gold Aero NOS Tested Strong Balanced Tube

$113.04 $67.83

7645 NOS NIB Amperex Orange Globe Audio Receiver Preamp Vacuum Tube Tested

$24.64 $14.78

Fx-Audio Tube-03J Vacuum Tube Hybrid Preamp With Tone Control Rca Input Black

$76.99 $46.19

Cicognani BRMKI BRUTO MKI (multi-channel tube preamp)

$355.61 $213.37

10 x NOS RFT ECC81 12AT7 Test GOOD German 1970s Preamp Dual Triode Vacuum Tubes

$88.0 $52.8

HiFi Vacuum Tube Preamp Stereo Bluetooth Receiver USB Player Desk Headphone Amp

$99.51 $59.71

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

$255.2 $153.12

Vintage Raytheon 12AU7/ECC83/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$29.57 $17.75

Single RCA 12AX7- 1958 Vintage. Black Plate/Slanted Getter. Strong And Quiet!

$57.2 $34.32

1pc Psvane Tube New ECC82 12AU7 Valve audio amplifier Preamp

$13.91 $8.35

Pre-amp for Record Player Tube Board Preamplifier Turntable

$19.94 $11.96

1 Marconi 6SN7GTB Vacuum Tube - TALL BOTTLE - 1950's Vintage Audio Twin Triode

$17.61 $10.56

Vintage Sylvania 12BH7A Preamp Tube Valve #69

$26.04 $15.62

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

$243.76 $146.26

1 RCA 6SL7GT Audio Receiver Pre-Amp Vacuum tube w/box testing VG on my Dyna 606

$22.0 $13.2

2024 PRS DGT 15 David Grissom 15-watt Tube Head Blonde Tolex

$747.12 $448.28

Universal Audio Solo 610 Vacuum Tube Desktop Microphone Preamp DI-Box UA

$1055.13 $633.08

Standard Tube Set for Crate V33

$114.98 $68.99

Matched Pair of Mullard 6AU6 NOS Vintage TESTED GOOD EF94 UK GB low noise preamp

$44.0 $26.4

D2 Mini Tube Amplifier HiFi Tube Preamplifier Tube Headphone Amplifier x-TOP

$19.23 $11.54

Gain Matched Pair (2) JJ 12DW7 / ECC832 / 7247 Vacuum Tubes - Brand New

$58.82 $35.29

Matched Pair RCA 6JE6C 6LQ6 6MJ6 6ME6 LIFE TEST Great, Emission Over 100% Tube

$86.64 $51.99

1 PCS PSVANE ECC82 Preamplifier Tube Amplifier Vacuum Tube Replace 12AU7 Tube

$27.28 $16.37

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

$365.07 $219.05

Fender Blues Jr. 15 watt, 120V Guitar Amp

$340.56 $204.34

AIQIN PSVANE 300B tube amplifier Single-ended Class A Handmade Scaffolding amp

$572.0 $343.2

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

$69.93 $41.96

LUXMAN SQ-N150 Tube Integrated Amplifier audio music Preamps 100V NEW

$1782.88 $1069.73

JJ Electronics 5751 Pre Amp Tube

$26.4 $15.84

Vintage Amperex 12AT7 Preamp Tube ECC81 Valve #120

$26.04 $15.62

6V6GT RCA for Philco Audio Receiver Guitar Power Vacuum Tubes Match Tested Trio

$23.76 $14.26

Closely Matched Pair Ken-Rad 6B4G One Tube Missed Key Same Date Tested Good Tube

$69.04 $41.43

Musical Paradise MP-701 MK3 Tube Amplifier Preamplifier Subwoofer Support Amp

$772.64 $463.59

Tube Preamp for Record Player Pre-amp Hifi System Amplifier

$19.97 $11.99

Westinghouse Canada Type 6GU7 Dual Triode Vacuum Tube-Used-Tested Good

$3.15 $1.89

Pair of Sovtek 12AX7WC Preamp Vacuum Tube

$52.72 $31.63

RCA 6201 12AT7WA ECC81 NOS NIB Life Test Excellent Tested Emission 100% Tube

$21.52 $12.91

Vintage NOS NIB Sylvania 12AU7A Tube Preamp Electron Vacuum Amplifier Audio Radi

$35.21 $21.12

3 x RCA grey plate 12AU7A preamp tubes, Tested Good !

$30.08 $18.05

XDuoo MP-01 Tube Phono Pre-Amp &Headphone Amplifier with Phono and AUX Input

$131.12 $78.68

OriPure Hand-made OAH-05 15W All Tube Guitar Amplifier Head

$269.98 $161.99

(Free Shipping) LUXMAN CL-360 Tube Preamplifier, Maintained

$1628.53 $977.12

Vacuum Tube, 5Y3GT, Tube Amp Doctor, Premium Selected, Rectifier, Preamp

$25.48 $15.29

PHILCO 12AU7A 12AU7 ECC82 Black Plate Test Good Vintage Preamp Tube

$4.36 $2.62

Synergy Soldano SLO Preamp

$264.0 $158.4

Ebs Valve Drive Di Vacuum Tube Bass Preamp Effector

$417.69 $250.61