Brand New Genalex Reissue KT77 KT-77 Current Matched Quad (4) Vacuum Tubes

$292.69 $175.62

Raytheon JRP-5842 Vacuum Tube Windmill Getter Black Plate Rare Preamp Tube

$171.6 $102.96

New Tung-Sol Reissue GOLD PIN 12AX7 ECC83 GAIN MATCHED Sextet (6) Vacuum Tubes

$237.35 $142.41

Suzurando EL-880 MarkII Vacuum Tube Preamplifier Chassis Black USED from JAPAN

$262.24 $157.35

Groove Tubes GT-12AY7 Select Preamp Tube

$30.8 $18.48

NIB Fosi Audio P3 Tube Preamp, Headphone Amplifier Home Audio w/RCA TUBES

$62.86 $37.72

Ampeg SVP-CL Tube Bass pre-amplifier rackmount SVT preamp

$748.0 $448.8

Vacuum Tube, 12DW7 / ECC832, JJ Electronics, Dual Triode, Gold Pins, Preamp

$32.12 $19.28

Vacuum Tube Adapter Converter 12AU7 ECC82 to 6SN7 6SL7 Pre Amplifier New Version

$7.78 $4.67

DIY PCB plus Tube - Balanced (differential) preamp/head amp using Korg Nutube

$52.8 $31.68

Vacuum Tube, 12AX7 / ECC83, JJ Electronics, Standard Pins, Preamp

$16.68 $10.01

Fosi Audio BOX X4 Tube Phono Stage Preamplifier NIB

$39.6 $23.76

Customizable Vacuum Tube Preamplifier For Audio Enthusiasts

$14.73 $8.84

JOYO JACKMAN-II BanTamp Tube Amp Head Preamp Mini Amplifier Head (Opened)

$132.09 $79.26

MINT 1997 Rocktron Gainiac 2 Channel Tube Guitar Rackmount Preamp!

$176.0 $105.6

AMPEREX ECC83 12AX7 LEGENDARY WEST GERMAN GLOBES SMOOTH PLATES MATCHING SET

$171.86 $103.12

SUCA AUDIO TUBE-T3 PLUS 300W+300W Hifi Power Amplifier Tube Preamp w/ VU Meters

$186.43 $111.86

Elekit Tu-8550 Arizona Special Vacuum Tube Preamp Kit

$1534.19 $920.51

SYLVANIA ?? 12AU7A ECC82 DUAL TRIODE PREAMP VACUUM TUBE TEST GOOD

$9.68 $5.81

Pair of Tung-Sol 6SN7GTB New Prod. Preamp Vacuum Tube

$82.64 $49.58

tested tube pre amp power transformer 115/230 to 125, 65CT, 25CT, 3V, and 2.5V

$16.72 $10.04

DIY 6J1 Vacuum Tube Preamp Kit For Clear Sound In Home Audio System

$14.57 $8.74

Pre-amp for Record Player Vacuum Tube Valve Preamp Amplifier

$18.6 $11.16

Vacuum Tube, 12AY7, Tube Amp Doctor, Highgrade, Preamp

$31.64 $18.99

2 Each 6SN7GTB RCA Coin Base Pre-Amp Vacuum Tubes Test Strong

$34.32 $20.6

*New* Sovtek 6SL7 Preamp Vacuum Tube

$17.61 $10.56

HiFi Vacuum Tube MM/MC Phono Stage Preamp Mini Class A Turntable Preamplifier

$57.9 $34.74

Vacuum Tube, 6SN7GT, Classic Series, Psvane, Preamp

$22.84 $13.71

2020 Base On France JP200 Preamplifier Circuit Hifi Stereo Tube Preamp

$262.24 $157.35

FX-AUDIO TUBE-06 Preamplifier Home Audio Tube 6N3 Input Adjustment DC12V/1A

$103.7 $62.22

Pair of JJ ECC823 Preamp Vacuum Tube

$36.88 $22.13

1PC Tube Preamp Vacuum Electron Tube Valve Preamp Phono Preamp For Turntable

$18.69 $11.21

2 MATCHED/BALANCED NOS 6922 6DJ8 ECC88 TUBES PHILIPS FOR PREAMP MICROPHONE MIC

$81.84 $49.1

PASS KORG B1 LINE STAGE PREAMP NU TUBE (no indicator)

$396.0 $237.6

Tube Preamp Vacuum Electron Tube Valve Preamp Phono Preamp For Turntable

$18.66 $11.2

Pair of Tung-Sol 6SL7GT New Prod. Preamp Vacuum Tube

$87.92 $52.75

D.W. Fearn Hazelrigg Industries DVA 500 Series Vacuum Tube Microphone Preamp / D

$1055.13 $633.08

TRIODE TRX-4 Vacuum Tube Preamp ac100v / Ships from Japan

$1934.07 $1160.44

Brand New Gain Matched Quad (4) Electro-Harmonix 6SN7 Gold Pin Vacuum Tubes

$257.16 $154.3

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

$142.96 $85.78

Presonus 2777400102 Studio Channel Vacuum-Tube Channel Strip Used Read

$110.0 $66.0

RHINO AUDIO VA1 Vacuum Tube Headphone Amplifier /NEW /audiophile DARKVOICE 336SE

$215.6 $129.36

New in box, Sovtek, 12AX7WC, Preamp Vacuum Tube for Amplifier

$22.0 $13.2

Pro-Ject Tube Box S2 Vacuum Tube Phono Preamp for MM and MC Cartridges (Black)

$377.52 $226.52

Tube Phono Pre Amp Preamp Vacuum Pre-amp for Record Player Amplifier

$18.8 $11.28

5x NOS GE JAN 5654W / 6AK5 - Audio Radio Preamp Tubes 5 Pack Sleeve Free Ship

$20.9 $12.54

Vacuum Tube, 12AX7S, JJ Electronics, Mid Gain, Preamp

$17.56 $10.54

ELEKIT Vacuum Tube Preamp Kit TU-8500 EK Phono equalizer amplifier analog record

$397.98 $238.79

Pair of Electro-Harmonix 12DW7 EH Preamp Vacuum Tube

$73.84 $44.3

Douk Audio T4 Plus Vacuum Tube Phono Preamplifier, MM/MC Turntable Audio Preamp

$78.33 $47.0

Vacuum Electron Tube Valve Preamp Stereo Amplifier Turntable

$19.59 $11.75

Mullard 12AU7 / ECC82 New Production Preamp Vacuum Tube

$23.72 $14.23

Pair of JJ ECC82 / 12AU7 Preamp Vacuum Tube

$35.12 $21.07

Pair of JJ ECC802s / Hi-Performance 12AU7 Gold Pin Preamp Vacuum Tube

$66.8 $40.08

JJ ECC802s / Hi-Performance 12AU7 Preamp Vacuum Tube

$20.2 $12.12

PRT13A-BAL Remote version Stereo Balance Tube preamplifier Vacuum tube preamp

$288.64 $173.19

5Y3GT Vacuum Tube RCA Red Label VT197A Audio HiFi Ham Amp Mixer Preamp.

$8.8 $5.28

Pre-amp for Record Player Vacuum Preamplifier Tube Turntable

$18.8 $11.28

Vacuum Preamplifier Pre-amp for Home Theater Hi-Fi Stereo Preamp Tube Amplifier

$22.88 $13.73

Tube Preamp Vacuum Electron Tube Valve Preamp Phono Preamp For Turntable

$26.92 $16.15

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

$196.09 $117.65

Hifi Tube Preamplifier Tube Preamp Headphone Amplifier Supports Remote Control-

$527.12 $316.28

Fosi Audio BOX X4 Tube Amplifier Phono Preamp for MM Turntable Phonograph 5654W

$28.16 $16.9

Presonus TubePre V2 Vacuum Tube Preamp + DI Direct Box, For Recording/Live Sound

$110.0 $66.0

Mesa/Boogie 12AX7 750150F Preamp Tube

$22.88 $13.73

Groove Tubes GT12AX7-R PreAmp Amplifier Vacuum Tube NOS GT-12AX7-R SELECT 113208

$29.92 $17.96

T1 PRO Tube Preamp Vacuum Pre-amp Receiver Home Audio Preamplifier with

$102.89 $61.73

Vintage The Fisher Preamplifier PR-6 Tube Phono Tape Preamp AS IS

$70.36 $42.22

Requisite Y7 Tube Microphone Preamp DI *RARE*

$2332.0 $1399.2

12AU6 HF94 Amperex / RCA NOS NIB Receiver Preamp Vacuum Tubes Mixed Lot of 15

$22.0 $13.2

AIYIMA A3 PRO GE5654 Tube Preamplifier Bluetooth 5.0 with Extra Tubes

$30.8 $18.48

Pair of Electro-Harmonix 12AY7 EH / 6072A Preamp Vacuum Tube

$47.44 $28.46

6SJ7GT JAN VT 116A Hytron Audio Receiver Preamp Vacuum Tube Tested

$17.6 $10.56

Presonus TubePre Vacuum Tube Preamp Unit Only NO POWER SUPPLY

$35.16 $21.1

Schiit Freya - Tube Preamp

$484.0 $290.4

LINLAI E-6SN7 MATCHED QUAD (4) GLOBE STYLE BLACK PLATES VACUUM TUBES, MINT!

$307.12 $184.28

EX-pro BP-1000 Vacuum tube preamplifier, operation verified shipping from japan

$344.96 $206.98

Phono Preamp for Turntable Vacuum Electron Tube Valve Amplifier

$19.97 $11.99

(2) RCA JAN 12AH7GT / VT-207 AUDIO PREAMPLIFIER TUBES - TV7 TESTED STRONG

$20.24 $12.14

Pair of JJ ECC802s / Hi-Performance 12AU7 Preamp Vacuum Tube

$35.21 $21.12

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

$44.0 $26.4

HiFi Class A Vacuum Tube Pre-Amplifier Bluetooth Stereo Audio Preamp USB Player

$172.88 $103.73

Mullard 12AX7 Russian Preamp Tube (2-pack) Bundle

$48.19 $28.92

Tube Amplifier Vacuum Electron Tube Valve Preamp Preamplifier for Home

$34.15 $20.49

Behringer Tube Ultragain MIC200 Audiophile Vacuum Tube Preamplifier Modeler

$34.81 $20.89

1EA. JJ ECC81 / 12AT7 PREAMP VACUUM TUBE BRAND NEW IN BOX ***FREE SHIPPING***

$26.36 $15.82

Pair of Electro-Harmonix 12AU7 EH Preamp Vacuum Tube

$38.64 $23.18

High Voltage Vacuum Tube Preamplifier MINI 2J27S Heaterless Tube Preamp

$52.8 $31.68

Tube Preamp Vacuum Electron Tube Valve Preamp Phono Preamp For Turntable

$18.57 $11.15

Synergy T/DLX 2-channel Preamp Module

$299.2 $179.52

ART Model 255 Tube Preamp System 2 Channel -WORKS WITH ISSUE FOR REPAIR ONLY .

$110.0 $66.0

New old stock GE 6680 12AU7A preamp Vacuum Tube - 1964 - Red Label - TESTED*

$17.24 $10.35

Pre Amplifier Home Audio Tube Headphone Preamp Preamplifier Kit Vacuum

$18.57 $11.15

12AT7 ECC81 Siemens Audio Receiver Guitar Preamp Vacuum Tube Tested One

$25.52 $15.31

Three Pack of JJ ECC81 / 12AT7 Preamp Vacuum Tube

$52.67 $31.61

Groove Tubes GT-12AY7 Preamp Tube

$30.8 $18.48

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

$59.91 $35.95

Fosi Audio Box X4 Phono Preamp with JAN 5654W Vacuum Tubes MM Turntable Phono

$48.4 $29.04

RAYTHEON 6EU7 VACUUM TUBE O GTR MATCH PAIR WARM ULTRA LOW NOISE SUPER SWEET 6301

$70.4 $42.24

BRZHIFI PAP-711 Field Effect Tube Class A Preamplifier 220V HiFi Power Amplifier

$292.61 $175.56