Treble And Bass Adjustable Vacuum Tube Preamp HiFi Stereo Audio Pre-Amplifier

$48.4 $29.04

Used Guitar Preamp With Vacuum Tube Amt Electronics Ss-20 Effector

$311.49 $186.9

Little Dot MK 2 Vacuum Tube Headphone Amplifier 6J1+6N6 Pramp HiFi Audio Amp

$151.12 $90.67

D.Klimo LAR Gold Plus Tube MM/MC Phono Stage Pre-Amplifier Board DIY Kit

$244.62 $146.77

RKY-C2200 Tube Preamplifier Hifi Tube Preamp Class A Preamplifier (6H3N Tube)

$172.99 $103.79

Standard Tube Set for Hammond RT-3

$112.29 $67.38

PRT-07A Tube HIFI Preamplifier Vacuum Tube Preamp Board Base On Marant 7 Circuit

$26.4 $15.84

GE / Hammond 6SN7GTB Vintage Preamp Vacuum Tube Tested USA

$16.72 $10.04

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

$21.64 $12.99

Tube Preamp Fever Hifi 6J5 Vacuum Tube Preamp Bluetooth Amplifier

$16.4 $9.84

PJ MIAOLAI SA-20 HiFi Electronic Tube Amplifier Bluetooth USB Flash Drive Preamp

$62.02 $37.21

Marshall JMP-1 Valve MIDI Pre-Amp Guitar Effect Rack

$880.0 $528.0

Magnavox 6AU6A VACUUM TUBE CHECKED

$4.4 $2.64

New Ip & Gm Factory Matched Quad (4) Electro-Harmonix 2A3 Gold Grid Vacuum Tubes

$444.84 $266.9

Nobsound E6 Direct Heated Vacuum Tube Class A Stereo Audio Pre-Amplifier NICE

$44.6 $26.76

Brand New Gain Matched Quad (4) Tung-Sol Reissue 6EU7 Vacuum Tubes

$145.92 $87.55

Nobsound E6 Direct Heated Vacuum Tube Class A Stereo Audio Pre-Amplifier NEW

$44.44 $26.67

Phono Preamp Tube Amplifier Home Audio Pre-amp for Phonograph

$18.81 $11.29

Heathkit Tube preamp Project Chassis

$44.0 $26.4

Closely Matched Pair Philco and Delco 6C5G W1528 Mech Plate Life Test Great Tube

$51.44 $30.87

Standard Tube Set for Orange Rockerverb 50 MKII

$161.53 $96.92

Fx-Audio Tube-01J Silver Tube Preamp Amplifier from JAPAN

$101.2 $60.72

Vacuum Tube Adapter Converter EF86 to 6SJ7 6J8P 6Ж8 Pre Amplifier New Version

$7.78 $4.67

Premium Matched Pair VALVO EF86 6267 Same Date Tested Strong Vacuum Tube

$100.72 $60.43

Effect Pedal for Electric Guitar Vacuum tube Preamp A.S.P Gear HV-Preamp

$306.24 $183.75

Universal Audio 710 Twin-Finity Microphone Preamp

$879.12 $527.48

M8 HiFi Bluetooth 5.0 Tube Vacuum Preamplifier Home Stereo Audio Digital Preamp

$86.53 $51.92

2 RCA Electron Tube 35W4 NOS Radio Audio Pre-amp Vacuum Tube NEW

$17.6 $10.56

Brand New Gain Tested Tung-Sol Reissue 6SL7 Gold Pins Vacuum Tube

$75.36 $45.22

Hifi Tube Preamplifier Tube Amplifier with Silver Panel Supports Remote Control

$518.33 $311.0

Hifi Sound System Vacuum Tube Valve Preamp Amplifier

$30.52 $18.32

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

$21.26 $12.76

Phono Preamp for Turntable Pre-amp Record Player Tube Amplifier

$19.76 $11.86

6U8 6GH8 ECF82 to 7199 Vacuum Tube Adapter Converter Pre Amplifier Guitar Part

$9.94 $5.97

RCA Electron Tube 12AU7A-ECC82

$22.0 $13.2

SYLVANIA 12SL7GT JAN Foil D Getter AUDIO Preamp VACUUM TUBE Tested USA Q.1363-D

$13.16 $7.9

NOS Philips Miniwatt EF86 / 6267 Preamp Tube Holland Valve #155

$70.92 $42.55

Phono Preamp for Turntable Stereo Tube Amplifier High Fidelity

$26.56 $15.94

Matched Pair 12AT7/ECC81 Dual Triode Guitar Amp. Audio Vacuum Tube Valve- Bangyb

$59.14 $35.49

3CPX1500A7 Penta Laboratories Ceramic/Metal High-Mu Power Triode

$1773.03 $1063.82

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

$18.61 $11.17

Douk Audio 300B Vacuum Tube Amplifier Home Stereo Class A Single-ended Power Amp

$1240.8 $744.48

6AH4GT Sylvania Audio Receiver Preamp Vacuum Tubes Tested Pair

$22.0 $13.2

GENERIC 12AU7/ECC82 Qty of 1 per Lot PRE AMP VACUUM TUBE

$22.0 $13.2

Mini Vacuum Tube Headphone Amplifier Desktop Audio Preamp for Home Stereo System

$36.52 $21.91

SUCA AUDIO TUBE-T3 PLUS 300W+300W Hifi Power Amplifier Tube Preamp Bluetooth Amp

$189.12 $113.47

Fosi Audio Box X1 Hi-Fi Phono Preamp for Turntable MM Phonograph Preamplifier

$13.16 $7.9

Mesa/Boogie 12AT7 (ECC 81) 750227F Special Requirement Preamp Tube

$22.88 $13.73

Lot of 3 6AV6 EBC91 NOS NIB Life Test Excellent Tested Emission Near 100% Tube

$19.76 $11.86

5x SYLVANIA JAN 6112 Vacuum Tube Dual Triode Valve Hi Mu Audio Preamp Mil Spec

$47.23 $28.34

NOS GENERAL ELECTRIC JG 6688 TUBE f/ AUDIO PREAMPLIFIER - 1962 VINTAGE TUBE

$13.2 $7.92

Matched Pair Ei 12AX7 ECC83 Telefunken Tooling Vacuum Tubes Tested NOS On TV - 7

$131.96 $79.18

1950's VINTAGE TUBE AMPLIFIER KZ8 TESLA 513000, made in CZECHO-SLOVAKIA *8W_100V

$242.0 $145.2

Vintage GAP/R 12AU7A/ECC83/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$29.57 $17.75

ECC82 / 12AU7A by Sylvania. Balanced & Strong, Halo Getter #521

$24.16 $14.5

Teegarden Audio Fatboy Tube DI

$787.6 $472.56

Cunningham 5Z3 Hanging Filament Black Plate D-Getter Tested Good Balanced Tube

$25.04 $15.03

Guyatone HGP-1 Hyper Instrument Processor Tube Preamp Made in JAPAN

$299.2 $179.52

Closely Matched Trio Tung-Sol and RCA 5881 6L6WGB Tested Strong Tube

$77.84 $46.71

6K4 Tube Preamplifier Amplifier HiFi Tube Preamp Audio Amp Home Theater Assembly

$18.3 $10.98

6J4P NOS NEVZ Novosibirsk EF94 6AU6 Hum and microphonics tested Microphone tube

$9.68 $5.81

FX-AUDIO-TUBE-04J [Silver] Vacuum tube hybrid pre-main amplifier vacuum tube+dig

$71.36 $42.82

Upgraded 6K4 Tube Preamplifier Amplifier HiFi Tube Preamp Auido Sounds Amp Board

$17.6 $10.56

RCA 12AT7 ECC81 NOS NIB Life Test Excellent Black Plate Square D-Getter Tube

$30.32 $18.19

C1 Electronic Tube Amplifier HiFi Power Amplifier Preamp Tubes w/ Balanced Port

$685.43 $411.26

2 x 1959 DGetter Philips Amperex BugleBoy 6DJ8 ECC88 Heerlen Holland⊿ Warm Audio

$329.12 $197.48

1PCS 6J1P Valve Vacuum Tube for PreAmplifier Board Headphone Amplifier Module

$1.91 $1.15

Orange Amps Micro Terror 20-Watt Tube Preamp Compact Tube Amp Bundle with Gui...

$294.87 $176.92

3 x Philips (Siemens made) E288CC - 8223 Dual Triode Audio Preamp Vacuum Tubes

$165.08 $99.05

LOT of 2 Tube Closely Matched GE 12AU7A 6680 NOS NIB Tested Strong Balanced Tube

$30.32 $18.19

Pair GE 6SL7GT One Tube Label RCA Coin Base Tested Like NOS Tube

$33.84 $20.31

RCA 12AU7 Long Grey Plate Angled D-Getter Tested Like NOS Balanced Tube

$14.48 $8.69

ART CLEANBox Pro Two Channel Pro/Consumer Level Converter

$61.52 $36.91

Closely Matched Pair RCA 6SJ7Y Micanol Base NOS Life Test Great Tube

$17.12 $10.27

6EW7 Sylvania & RCA NOS NIB Audio Receiver Power Vacuum Tubes Tested Trio

$20.24 $12.14

Closely Matched Pair RCA JAN-CRC 5V4G Military Spec Tested Strong Balanced Tube

$42.64 $25.59

Mullard 7025 (12AX7) O-Getter, Dark Grey Plates, TV-7 Test = 102% / 104%

$69.96 $41.98

Phono Preamp for Turntable Pre-amp Phonograph Hifi Sound System Tube Amplifier

$19.97 $11.99

Tube Amplifier Pre-amp for Phonograph Vacuum Preamplifier Turntable

$27.98 $16.79

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

$19.47 $11.68

APOLLON AUDIO TUBE PREAMPLIFIER STEREO AMAZING tube e80cc 1626 gz34

$10560.0 $6336.0

Vintage Toshiba 12AX7 Tube Tested Audio Preamp Amplifier Guitar Vacuum Electron

$44.0 $26.4

RCA 5V4G Tested Good Balanced Tube

$12.72 $7.63

Mesa 5U4G Missed Key Black Plate Bottom Duel D-Foil-Getter Life Test Good Tube

$10.96 $6.58

2 TrueNOS Rare SealedBox NEC Nippon Special 12AU7A Audio Tubes ~ 6189 5814 E82CC

$483.12 $289.88

NEW 6DJ8 tube preamplifier board CD player DAC audio decoder tube buffer

$80.64 $48.39

MULLARD ECC35 6SL7GT NEW OLD STOCK IN BOX TESTED BRITISH VINTAGE VALVE TUBE

$308.0 $184.8

HiFi 12AU7 Vacuum Tube Stereo Preamplifier Board Refer US CARY-SLP90 Circuit

$35.21 $21.12

Pair of Dumont Emerson 60FX5 Black Plate Vintage Radio Amp Preamp Tubes Lot

$2.64 $1.59

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

$66.76 $40.06

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

$70.02 $42.01

Hifi Sound System Vacuum Electron Tube Valve Preamp Amplifier

$31.41 $18.85

Standard Tube Set for Hammond C-3

$112.29 $67.38

Epiphone BLUES CUSTOM 30 EMINENCE 2X12"💥ALL TUBE💥 Combo Guitar Amplifier

$439.12 $263.48

1pc Psvane 5U4G Vacuum Tube Rectifier for 274B 5Z3P Preamplifier DIY

$24.64 $14.79

Audio Research SP9 Preamplifier (Serviced & Recapped)

$2023.96 $1214.38

Auris Largo Class A Tube preamplifier

$1276.0 $765.6

12at7 ecc81 tube nos Mullard preamp tubes pair valve s same code square getter

$396.0 $237.6

1 NOS 6SL7GT Sylvania Black Plate Chrome Top Vacuum Tube

$49.8 $29.88

New Ip & Gm Factory Matched Pair (2) Electro Harmonix 2A3 Gold Grid Vacuum Tubes

$229.22 $137.53