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

$252.56 $151.54

Brand New Tung-Sol Reissue EL34B Plate Current Matched Sextet (6) Vacuum Tubes

$250.91 $150.55

Brand New Electro-Harmonix 12AU7 ECC82 GOLD PINS Gain Tested Vacuum Tube

$38.34 $23.0

JJ Electronic - Ruby 6 Pack ECC83S / 12AX7 ACZ HG Preamp Tubes

$94.41 $56.65

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

$70.01 $42.01

CARY 5Z4P + 6N8P*4 Vacuum Tube Pre-amp PreAmplifier Bare PCB Board

$14.31 $8.59

1955 Sylvania 12AT7 Vintage Made In USA Preamp Tube. Tested Strong BD Date Code.

$22.0 $13.2

PRT07B 12AX7 Tube Preamps Base On Marantz 7 (M7) Circuit Kit / Board (No Tubes)

$30.8 $18.48

dbx 676 Tube Microphone Channel Strip / mic pre amp / open box ARMENS

$787.6 $472.56

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

$791.12 $474.68

bellari tube Phono preamp VP 130 Stereo Headphone MM record Player Extra Tube F6

$264.0 $158.4

SYLVANIA 12AU7 ECC82 SHORT PLT TIGHT MATCH PAIR TEST NOS+ VINTAGE 1956-57

$43.96 $26.38

XiangSheng 728A Vacuum Tube preamp Shigeru Wada circuit home preamplifier black

$440.0 $264.0

Brand New Current Matched Octet (8) Electro-Harmonix EL84 6BQ5 Vacuum Tubes

$180.26 $108.16

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

$103.49 $62.1

RCA 12AX7 ECC83 TUBE SINGLE LONG BLK PLT 1957 NOS NIB AUDIO TST LOW NOISE

$111.66 $67.0

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

$82.1 $49.26

FX-AUDIO TUBE-01J Silver Tube Preamp Line Amplifier NFJ Model Silver NEW

$74.07 $44.44

lot of 4 new JJ ECC83S / 12AX7 PREAMP VACUUM TUBES ***FREE SHIPPING***

$87.12 $52.28

1 x Sylvania 6SN7GTB coin base preamp tube, Tested Good ! (N-3)

$17.3 $10.38

3 Strong Sylvania 12AT7/ECC81 Sylvania Guitar Amplifier Preamp Vacuum Tubes

$52.8 $31.68

Presonus TubePre v2 Tube Preamplifier DI Box

$140.8 $84.48

Electro-Harmonix 12AT7 EH Preamp Vacuum Tube, Single

$18.46 $11.08

Yong Heng Zhi Yin X9 40W Hifi Tube Preamplifier Class A Tube Preamp with Remote/

$1671.12 $1002.68

AC 12V 6J1 Electronic Tube Bile Preamplifier With Boost Function Electron Valve

$13.28 $7.97

Preamplifier for Home Theater System Vacuum Electron Tube Valve

$27.91 $16.75

Amperex USN CEP 7308 VR5 Gold Pin Audio Vacuum Tube Lot (some test as NOS)

$580.8 $348.48

12AX7 ECC83 Sylvania #9 Long 17mm Grey Plate O (Halo) Getter Tested Vacuum Tube

$25.04 $15.03

Plate Current Matched Pair (2) Sovtek 2A3 Triode Power Vacuum Tubes

$186.01 $111.61

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

$66.77 $40.06

1 x NOS 1963 Philips Amperex Bugle Boy 6DJ8 ECC88 Heerlen ⊿ Holland +Free Ship!

$245.52 $147.32

XDUOO MT-601 6N11/E88CC Tube Preamp High Performance Class-A Headphone Amplifier

$81.03 $48.62

2 NOS RCA 12SL7GT Vacuum Tubes 1950's Vintage Twin Triodes for Audio Amps

$13.2 $7.92

4 x Strong (Test NOS) 1957 RCA Conn 12AU7A Grey Plate Tubes - TV7 Tested

$29.92 $17.96

NOS SLEEVE GE 6AK5 Audio Preamplifier VINTAGE VACUUM TUBES USA Tested 4.7255-D

$52.76 $31.66

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

$158.4 $95.04

Pre-amp for Phono Preamp Record Player Tube Amplifier Turntable

$18.97 $11.38

Vintage Westinghouse 12AU7A/ECC82/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$36.96 $22.18

LittleDot MK-8SE Fully Balanced Pure Vacuum Tube Amplifier Headphone Amplifier

$947.19 $568.32

xDuoo MH-02 CS43131 USB DAC & Tube Headphone Amplifier

$111.46 $66.88

Stereo Vacuum Tube Headphone Amplifier Hi-Fi Preamp PC USB ASIO OTG Sound Card

$53.76 $32.26

Raytheon 6SN7GTB Tested Good Tube

$12.72 $7.63

5C5 Tweed Pro Chrome Plated Steel Chassis Octal Preamp DIY Guitar Tube Amplifier

$37.25 $22.35

AMPEREX BUGLE BOY 6688 GOLD PIN AUDIO PREAMPLIFIER TUBE

$12.32 $7.39

Presonus Bluetube DP V2 2 Channel Tube Mic Pre-Amp DP2+Boom Arm+Headphones

$246.36 $147.82

Sovtek 6L6WXT+ Vacuum Tube w/ 12ax7wc Pre-Amp Vt-1000 Rated: 8 Matched Lot 8

$158.38 $95.03

JJ 12AT7/ECC81 Slovakia Preamp Tube (5-pack) Bundle

$101.16 $60.7

Westinghouse 12BH7A Long Grey Ladder Plates Pre-Amp Vacuum Tubes USA NOS NIB

$30.8 $18.48

Warm Audio WA-MPX Single-Channel Tube Microphone Preamp 19" Rack-Mount

$659.12 $395.48

RCA 12AU7A Vintage Tube NOS NIB Audio Preamp Amplifier Radio Electron Vacuum

$35.21 $21.12

GE Pair - 6DJ8 ECC88 1960's Gray Glass NOS Preamp Vacuum Tubes

$70.4 $42.24

2 x GE 6SL7GT preamp tubes, Tested Good ! (G/H)

$37.63 $22.58

Amperex ECC189 Label RCA NOS NIB Life Test Excellent Tested Emission 100% Tube

$14.48 $8.69

Behringer VOICE STUDIO Bundle W/Cndnsr Mic,Tube Preamplifier-USB/Audio Interface

$131.12 $78.68

HiFi ARC SP-10 Tube Preamplifier Board PCB Stereo 6922 Vacuum Tube Preamp PCB

$23.76 $14.26

RCA / Hammond 6SN7GTB Vintage Black Plate Preamp Vacuum Tube Tested USA

$16.72 $10.04

RCA / Hammond 6SN7GTB Vintage Black Plate Preamp Vacuum Tube Tested USA

$16.72 $10.04

RCA / Hammond 6SN7GTB Vintage Black Plate Preamp Vacuum Tube Tested USA

$16.72 $10.04

RCA / Hammond 6SN7GTB Vintage Black Plate Preamp Vacuum Tube Tested USA

$16.72 $10.04

6SN7 VT231 / GT NOS KEN RAD PLATINUM MATCHED TRIODE TV7

$173.78 $104.27

Vintage GE 12AU7A Vacuum Tube Gray Plates Strong HiFi Pre Amp

$13.2 $7.92

1 Amperex PQ 7062 / E180CC Vacuum Tube - 10,000 Hour Audio Twin Triode

$15.84 $9.51

Closely Matched Pair RCA Type 802 RK25 CV622 Transmitting Tube

$25.04 $15.03

MIC300 Audiophile Vacuum Tube Preamplifier with Limiter

$110.88 $66.53

Tube Amplifier Preamplifier for Home Theater System Turntable

$18.8 $11.28

Beyond Tube Preamp 2S Vacuum

$297.44 $178.46

NOS GE 6EB8 Vintage Radio Amp Preamp Tube

$2.64 $1.59

12AL5 Vacuum Tube Various Brand 100+% ( QTY 1 used Tube )

$0.88 $0.53

6J1 AC12V Valve Pre-amp Tube Amplifier Board Fidelity X10-D Circuit/Acryliv Case

$4.38 $2.63

Tested GE 6SL7GT Vintage Preamp Radio Tube Audio Amplifier Red Print Excellent

$21.34 $12.81

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

$32.54 $19.53

1 PCS PSVANE ECC83 Preamplifier Tube Amplifier Vacuum Tube Replace 12AX7 Tube

$27.28 $16.37

Nobsound HiFi Bluetooth 5.0 Tube Pre-Main Amplifier COAX OPT USB

$512.22 $307.33

Brand New Gain Matched Trio (3) Mullard Reissue ECC82 12AU7 Vacuum Tubes

$81.61 $48.97

12AY7 6072 GE Short Grey Plate Angled D-Getter Tested Vacuum Tube

$28.56 $17.14

Standard Tube Set for Marshall TSL122

$151.01 $90.61

Sylvania 6SN7WGTA Tested Like NOS Balanced Tube

$51.44 $30.87

5U4GB (5U4) Vacuum Tubes - Various Brands USA - $11.95/ea (TESTED & GUARANTEED)

$10.52 $6.31

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

$22.6 $13.56

BRZHIFI PAP-6A2 Preamplifier High Performance Electronic Tube Audio Amplifier

$29.63 $17.78

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

$44.44 $26.67

Matched Pair AMPTATA ECC83 12AX7 Perfect HIFI Audio Vacuum Tube Amp Classic New

$43.12 $25.87

Preamp Tube Board Home Theater DIY 6K4 Tube Preamplifier Amplifier Adjustable

$21.11 $12.67

PRT07A 12AX7 Vacuum Tube Preamplifier Bare PCB Base on Marantz 7(M7) Circuit

$10.34 $6.21

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

$66.77 $40.06

GE 6DJ8 / ECC88 Dual Triode AUDIO/PREAMP Vacuum Tube VINTAGE TESTED 7.9929-D

$14.92 $8.95

Supro 1820RBB Delta King 10 5-Watt 1x10” Combo w/Reverb – Black/Black - Open Box

$360.8 $216.48

1963 NOS Matched Balanced Pair GE USN-5963 5963 12AU7 Vacuum Tubes - TV7 Tested

$28.16 $16.9

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

$29.57 $17.75

EVH 5150III 1x12" 50-watt Tube Combo Amp - Ivory

$264.0 $158.4

Fosi Audio P3 Bluetooth Tube Preamp Headphone Amplifier HiFi Stereo

$132.3 $79.38

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

$211.2 $126.72

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

$86.64 $51.99

Black Box Analog Design MM-1 Vacuum Tube Preamp #250536 (Used)

$1708.48 $1025.09

Tube Preamplifier Bluetooth Receiver Headphone Amp DAC w/ Treble and Bass Knob

$64.42 $38.65

6SK7GT RCA Audio Receiver Guitar Preamplifier Vacuum Tubes (untested)

$8.81 $5.28

Vacuum Tube Preamplifier Switching Power AC100-265V to 6.3V 5A300V For 6P3P EL34

$21.12 $12.67

Tube Amplifier Pre-amp for Home Theater Phono Preamp Turntable

$20.14 $12.09

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

$56.91 $34.15

Brand New In Box Gain Tested Electro-Harmonix EF86 / 6267 Vacuum Tube

$35.35 $21.21