Brand New In Box Genalex Reissue PX300B / 300B GOLD PIN Vacuum Tube

$176.43 $105.86

Matched Pair RCA 12AU7A/ECC83/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$96.1 $57.66

New Matched Octet (8) Psvane 12AU7-S ECC82 Gold Pins Art Series Vacuum Tubes

$312.52 $187.51

Hiend MM Riaa Tube Phono Amplifier Base On Ear834 Turntables Preamp (B6-70)

$202.4 $121.44

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

6L6 WIRE WRAP OCTAL VACUUM TUBE AMPLIFIER AMP PREAMP TEST 8 PIN SOCKETS

$7.92 $4.75

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

$48.4 $29.04

12AU7 Vacuum Tube GE Amps Preamps Amp Mixers 12AU7A 5814A Tests Good.

$8.8 $5.28

JOYO BanTamp Mini Amp Head 20W Preamp 2 Channel Hybrid Tube Guitar Amplifier

$96.8 $58.08

PreSonus TubePre v2 Audio Preamplifier w/Power Supply and Cable

$61.6 $36.96

VINTAGE RCA 5879 PENTODE PREAMP TUBE WITH BOX TESTS GOOD

$10.56 $6.34

Finished HIFI Ground Grid gg Stereo Tube Preamplifier

$171.6 $102.96

Tube Preamp Vacuum Pre-Amplifier Bluetooth 5.1 Vacuum Bass Treble Tone Control

$138.02 $82.82

TELEFUNKEN 12AX7 ECC83 VACUUM TUBE 1967 TEST NOS SMOOTH PLATE DIAMOND SINGLE

$118.7 $71.22

Ruby 5 Pack 12AX7AC5 HG Preamp Tubes

$91.26 $54.76

Fosi Audio P3 Tube Bluetooth Preamp Headphone Amplifier Home Audio Preamplifier

$66.88 $40.13

COINCIDENT LINE STATEMENT 101D Tube Preamplifier

$1495.12 $897.08

JOYO Mini Amp Head 20W Preamp 2 Channel Hybrid Tube Guitar Amplifier Opened

$132.09 $79.26

3 Electro-Harmonix - JJ - ? - 12AX7 Preamp VacuumTubes - Tested - FREE Shipping!

$35.21 $21.12

Douk Audio T3 PRO Mini MM RIAA Tube Phono Turntable Preamp Stereo Preamplifier

$37.4 $22.44

Mullard 12AU7 Audio Preamp Tube See GM+iP+Curve Tracer Curves - uTracer3+ 02

$44.0 $26.4

5814A Vacuum Tube GE ECC82. CK5814A Audio HiFi Preamp Amp Mixer Stereo.

$10.12 $6.07

Matched Pair Tung Sol 12AU7W / 6189 / 12AU7 pre-amp tubes, Brand New in Box

$36.62 $21.98

Vacuum Preamplifier Pre-amp for Phonograph Hifi Sound System Audio

$19.79 $11.87

HEATH (Mullard) EF94/6AU6 Audio Preamp VACUUM TUBE Tested Strong 4.2626-D

$15.8 $9.48

HiFi Vacuum Tube Preamp Stereo Audio Preamplifier for CD Player Amplifier DAC

$190.25 $114.15

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

$82.72 $49.63

Dynavox Tube Preamp TPR-43 Silver with Phono MM/MC TPR43 Preamplifier

$187.58 $112.55

Vacuum Tube Stereo Preamplifier Phono Preamp DIY KIT for KONDO M77(no tube）

$129.59 $77.75

Cascode CCS (Constant Current Source) for tube amp / preamp (assembled & tested)

$30.8 $18.48

DUMONT-12AX7 -ECC83 VACUUM TUBE TESTED-HIGHEST READING, TUBE AMP, PEDAL, PRE AMP

$21.96 $13.18

6CG7 Vacuum Tube Electro-Harmonix Preamps Audio HiFi Amps Amp Mixers Mfg Russia.

$14.08 $8.45

Behringer MIC300 Audiophile Vacuum Tube Preamplifier with Limiter #000E7J0200010

$78.33 $47.0

GE 12AX7A/ECC83 Audio Electron Amplifier Vacuum Tube Preamp NOS. MADE IN US

$36.96 $22.18

12AT7 Vacuum Tube Sylvania 12AT7WA E81CC Audio HiFi Preamps Amp Mixers Ham Radio

$16.72 $10.03

Hifi ECC82+6Z4 vacuum tube stereo preamplifier kit base on Shigeru Wada Circuit

$157.53 $94.52

Sylvania Preamp Vacuum Tube / 12AX7A / CH / KT

$24.6 $14.76

Split Hifi Ground Grid (GG) Tube Preamplifier ECC82 Vacuum Tube Preamp (B6-8)

$200.64 $120.39

Brand New Current Matched Quad (4) Electro-Harmonix 6L6GC Vacuum Tubes

$148.16 $88.9

AC Adapter For Behringer TUBE ULTRAGAIN MIC500USB Vacuum Tube Preamp Auth Dealer

$7.04 $4.22

Mullard E188CC 7308 Gold Pin Heerlen NL *Amplitrex Tested*

$57.2 $34.32

EL91 6AM5 Mullard NOS NIB Audio Receiver Preamplifier Vacuum Tubes Two

$21.12 $12.67

6C5GT/G Hytron Audio Receiver Pre-Amp Vacuum Tubes Tested Pair

$21.12 $12.67

Gain MATCHED Pair Of RCA JAN CRC 6SN7GT VT-231 SMOKED GLASS MAXI PREAMP TESTED

$158.36 $95.02

6CG7 Vacuum Tube RCA Audio HiFi Preamps Amp Mixers Amps Tuners.

$7.04 $4.22

Little Dot LD1+ Headphone Tube Pre-amp Vacuum Tube Headphone Amplifier 6J1 Tube

$83.56 $50.14

5755 JAN Raytheon NOS NIB Audio Receiver Pre-Amp Vacuum Tubes Tested Pair Mint

$26.4 $15.84

Pair of Electro-Harmonix 6SN7 EH Gold Pin Preamp Vacuum Tube

$131.92 $79.15

Tube Preamp Vacuum Electron Tube Valve Preamp Phono Preamp For Turntable

$29.0 $17.4

Amperex PQ 7308 / ECC88 / 6922 Gold Pin *Amplitrex Tested* 1961 Date Code

$66.0 $39.6

JOYO BanTamp 20W Mini Amp Head Preamp 2 Channel Hybrid Tube Guitar Amplifier

$142.56 $85.54

Bellari VP130 MK2 Tube Phono Preamp / Headphone amp

$237.6 $142.56

JOYO 20W Mini Amp Tube Guitar Amplifier Clean Overdrive Effect with Footswitch

$107.36 $64.42

Bell Carillon 2 Channel 60w Mullard Vacuum Power Tube Amplifier Pre-Amp EL34

$1091.2 $654.72

6SN7GTB RCA Red Letter Audio Receiver Pre-Amp Vacuum Tubes Tested Pair

$22.0 $13.2

Vintage Amperex 6EU7 Preamp Tube Valve #122

$26.04 $15.62

Vacuum Electron Tube Valve Preamp Pre-amp for Home Theater Turntable

$22.31 $13.39

6J1 Tube Preamp Amplifier Board Pre-amp Headphone Buffer Kits DIY Assortment

$8.26 $4.96

JJ ECC81 / 12AT7 Preamp Vacuum Tube

$7.92 $4.75

Presonus TubePre V2 Vacuum Tube Preamp+DI Direct Box||4 Recording + Headphones

$149.56 $89.74

SUCA AUDIO TUBE-M1 BLUETOOTH TUBE PREAMP (UNIT ONLY NO TUBES) W/AC POWER TESTED

$52.8 $31.68

NIB quad JJ ECC83S / 12AX7 PREAMP VACUUM TUBES ***FREE SHIPPING***

$69.45 $41.67

Pair of JJ 5751 Preamp Tube

$35.12 $21.07

Pair of JJ 6SL7 Preamp Vacuum Tube

$47.44 $28.46

Pair of Electro-Harmonix 12AU7 EH Preamp Vacuum Tube

$38.64 $23.18

Tube Preamp Vacuum Tube Valve Preamp Phono Preamp For Turntable

$20.11 $12.07

Pair of Mullard 12AX7 / ECC83 New Production Preamp Vacuum Tube

$52.72 $31.63

Tung-Sol 12AU7 / 6189 New Production Preamp Vacuum Tube

$23.72 $14.23

Professor Dan - Vacuum Tube Microphone Preamplifier and EQ

$3080.0 $1848.0

Vintage 1953 Sargent Rayment Tube Preamp/Tuner SR68

$132.0 $79.2

ART Tube MP USB Project Series Professional USB High Output Tube Mic Preamp

$59.84 $35.91

12AX7 ECC83 Sylvania for Fender Receiver Guitar Preamplifier Vacuum Tubes Tested

$32.56 $19.54

XDUOO MT-603 Multiple Pre-Amp 4 Audio Input, One Audio Output 12AU7 Tube Amplifi

$51.92 $31.16

1pc QUAD-22 6N4(12AX7) Cholesteric Tube Preamplifier

$73.62 $44.17

Matched Pair RCA 12AU7A ECC82 1960s Clear Top Pre Amp Tubes Tests Strong

$20.24 $12.15

PreSonus TubePre Preamp & Power Supply

$52.8 $31.68

Mini Vacuum Tube MM Phono Stage Preamp Stereo Pre-amplifier for Home Turntables

$52.27 $31.36

RCA 12AT7 Vacuum Tube ECC81 Audio HiFi Preamps Amp Mixers Ham Amateur Radios.

$16.72 $10.03

HP/Unbranded 12AT7 ECC81 Vacuum Tubes One Pair Audio HiFi Preamp Amp Amp Mixers.

$19.36 $11.62

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

$27.28 $16.37

PATHOS In Control Class-A Tube Preamplifier with Seperate Power Supply

$3080.0 $1848.0

Stereo Preamplifier Home Audio Phono Vacuum Tube Electron Valve

$19.8 $11.88

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

$22.35 $13.41

Schiit Audio Freya+ Tube Hybrid Preamplifier; Solid State Only

$659.12 $395.48

Vintage RCA 12AU7A GOLD GRADE Clear Top D Getter Preamp Tube = 5814, 6189, ECC82

$13.16 $7.9

TU-875+TU-870 Vacuum tube preamplifier + vacuum tube power amplifier

$506.39 $303.84

6SN7GT RCA White Letter Audio Receiver Preamp Vacuum Tubes Tested Pair

$22.0 $13.2

Sylvania 6SN7WGT NOS NIB Tested Strong Balanced Tube

$77.84 $46.71

ROGUE AUDIO RP-1 Tube Preamp/phono/Headphone Amp AUTHORIZED-DEALER $1800 List !

$1232.0 $739.2

6A2 Vacuum Tube Preamplifier USB Bluetooth 5.0 Amplifier w/ Power TUBE-T1 PLUS

$42.45 $25.47

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

$44.0 $26.4

PHILLIPS ECC83 12AX7 YUGOSLAVIAN SMOOTH PLATES PERFECT MATCHING SET NIB MINT

$97.06 $58.24

Preamplifier for Home Theater System Vacuum Electron Tube Valve

$18.81 $11.29

Dynavox Tube Preamp TPR-43 Black with Phono MM/MC TPR43 Preamplifier

$186.09 $111.66

Vintage RCA 5963 PLATINUM PLUS GRADE Preamp Amp Tube = 12AU7, 5814, 6189, ECC82

$7.0 $4.2

Cayin MT-35 mk2 Plus Audiophile Vacuum Tube Integrated Amplifier w Bluetooth

$658.24 $394.95

6EA8 Vacuum Tube Unbranded ECF82 Audio HiFi Preamp Amp.

$7.92 $4.75

Nobsound Little Bear T7 Vacuum Tube Mini Phono Stage RIAA MM Turntable Preamp

$198.0 $118.8

SA-20 HiFi Vacuum Tube Preamp Stereo Sound 4way Audio Switcher Box Headphone AMP

$60.76 $36.46