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

$89.95 $53.97

HiFi 12AX7 Vacuum Tube Preamp KIT Stereo Home Desktop Audio Preamplifier #F6

$224.57 $134.75

New Current Matched Sextet (6) Electro-Harmonix EL34 Small Bottle Vacuum Tubes

$230.51 $138.31

Brand New Mullard Reissue 12AT7 ECC81 Gain Matched Sextet (6) Vacuum Tubes

$155.4 $93.24

RCA 5Y3GT Vacuum Tube Audio HiFi Preamp Amp Mixer Vintage Radios Guitar Amps.

$14.08 $8.45

Two Notes Le Crunch 2-channel British Tones Tube Preamp Pedal - No Power Supply

$132.0 $79.2

6J1 Vacuum Tube Preamp Kit Hum- Audio Amplifier DIY Parts CBK

$13.91 $8.35

Closely Matched Quad Ei 6BQ5 EL84 7189 Code kM4 YUGOSLAVIA Test Like NOS Tube

$148.24 $88.95

2 RCA Numitron Electron Tube DR2010 NOS Radio Audio Pre-amp Vacuum Tube NEW

$17.6 $10.56

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

$66.0 $39.6

Nagra Classic Preamp Stereo Tube Hybrid Preamplifier

$12935.12 $7761.08

(2) 6EM7 Sylvania (USA) Audio Receiver Preamplifier Vacuum Tubes. Tested, (Pair)

$17.49 $10.5

Universal Audio 710TF Microphone Preamp

$528.0 $316.8

Sun Audio Vacuum Tube Preamp Svc-200 High-End Audio Equipment Audiophile-Grade

$979.18 $587.51

AOSIBAO AV-889 Hifi Tube Amplifier 200Wx2 Vacuum Tube Amp Assembled Bluetooth

$300.96 $180.58

Douk Audio T8 Pro 7-band EQ Equalizer Tube Preamp RCA/XLR Balanced Pre-Amplifier

$114.4 $68.64

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

$61.5 $36.9

Mullard 12AU7 Preamp Vacuum Tube Single

$38.58 $23.15

Ruby 12AX7A Preamp Tube Valve #98

$13.47 $8.08

Vintage RCA 12AU7A PLATINUM PLUS GRADE Clear Top Preamp Tube 100% NOS =5814 6189

$24.6 $14.76

6SJ7GT Hytron Audio Receiver Guitar Preamp Vacuum Tubes Tested Pair

$22.88 $13.73

Tung-Sol 6SN7GTB New Prod. Preamp Vacuum Tube

$41.32 $24.79

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

$156.72 $94.04

Tube-T5C HiFi Vacuum Tube Preamp Bluetooth 5.0 Receiver USB DAC Headphone Amp su

$89.76 $53.86

1EA. JJ ECC832 / 12DW7 PREAMP VACUUM TUBE BRAND NEW IN BOX ***FREE SHIPPING***

$30.76 $18.46

NEW Vacuum Tube Stereo Preamplifier Phono Preamp DIY KIT Inspired by KONDO M77

$85.52 $51.32

RCA 5687 Black Plates AUDIO Preamplifier VACUUM TUBE USA Tested 9.7018-D

$16.68 $10.01

Hifi Sound System Pre-amp for Home Theater Vacuum Preamplifier

$29.38 $17.63

Rare CIFTE 12AU7WA-H / ECC82 Triple Mica French Army Tube Vintage 1958

$101.2 $60.72

Mini 5654 Vacuum Tube Phono Preamp Home Stereo Audio Pre-Amplifier Headphone Amp

$57.2 $34.32

Pair of JJ ECC82 / 12AU7 Gold Pin Preamp Vacuum Tube

$54.48 $32.69

6SJ7Y JAN CRC RCA NOS NIB Metal Harmonica Preamp Vacuum Tubes Tested Pair

$22.0 $13.2

Electro-Harmonix 6922 EH Preamp Vacuum Tube

$26.36 $15.82

One(1) TV7D/U UNUSED 1945 Tung-Sol JAN 6SU7GTY Round Plates & Round Mica Tube

$175.96 $105.58

Synergy SYN-1 Single Module Tube Preamp

$437.24 $262.35

Warm Audio WA-MPX Single-Channel Tube Mic Microphone Preamp - New

$572.0 $343.2

NOBSOUND P2 2021 MINI BLUETOTH 5.0 Vacuum tube preamplifier HIFI USB player ster

$70.98 $42.59

Electro Harmonix 12AX7 Vacuum Preamp Tube - Set of 4

$63.58 $38.15

AMPEREX 12AX7 ECC83 BUGLE BOY HEERLEN HOLLAND RIBBED PLATES MATCHING SET NIB

$410.47 $246.29

Pack Of 4 Premium Vacuum Tube Preamplifiers With Volume Control Dial

$123.2 $73.92

For Little BearT11 Vacuum Tube Phono Stage Preamplifier MM RIAA Turntable PreamP

$279.22 $167.53

Mullard 12AX7 ECC83 1959 Code I61 B9F Tested Like NOS Balanced Section Tube

$77.84 $46.71

Tube Preamp Vacuum Electron Tube Valve Preamp Phono Preamp For Turntable

$27.38 $16.43

GE 6L6 Vacuum Tube Audio HiFi Preamp Amp Mixer Vintage Radios Guitar Amps.

$7.92 $4.75

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

$22.0 $13.2

HiFi 12AX7 Vacuum Tube Preamp DIY KIT Stereo Home Desktop Audio Preamplifier

$270.07 $162.04

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

$43.12 $25.87

LOT OF 2 G.E. 12AU7A PREAMP VACUUM TUBES WITH BOXES TESTED GOOD.

$17.56 $10.54

preamplifier tube

$220.0 $132.0

Musical Paradise MP-701-MK3 Electronic Tube Amplifier Stabilizing Preamplifier

$792.0 $475.2

Genalex Gold Lion 12AU7/ECC82 Gold Pin Preamp Tube

$49.89 $29.94

ART Tube MP Project Series Low Noise Microphone Preamp w/Power Supply 🎵

$44.0 $26.4

6T7G Wizard / Zenith Audio Receiver Preamplifier Vacuum Tubes Tested Pair

$18.48 $11.09

High Voltage Vacuum Tube Preamplifier MINI 2J27S Heaterless Tube Preamp

$52.8 $31.68

1 EA JJ ECC803S / 12AX7 PREAMP VACUUM TUBE BRAND NEW ORIGINAL BOX New Old Stock

$22.88 $13.73

Vacuum Tube Phono Preamp MM Turntable Preamplifier Hi-Fi

$99.24 $59.55

RCA 12AX7A Vintage Preamp Vacuum Tube Tested Good for Guitar Amp USA

$24.64 $14.78

Shuguang 12AX7B Triple Mica Amp Radio Preamp Tube Guaranteed

$8.76 $5.26

Standard Tube Set for Crate V32 Palomino

$114.98 $68.99

Watz Pa-301 Vacuum Tube Preamp/Pa-301

$426.58 $255.95

Upgraded 6K4 Tube Preamplifier HiFi Tube Preamp Audio Amp Home Theater DIY USA

$23.2 $13.92

Focusrite Platinum Voicemaster Voice Processor Channel Strip Master Mic Pre-Amp

$132.0 $79.2

Gates m-5576 Tube Preamp 1950's vintage 12au7 5879 tubes and Triad Transformers

$880.0 $528.0

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

$57.01 $34.21

Vacuum Preamplifier Tube Preamp Pre-amp for Phono Preamp Tube Amplifier

$19.79 $11.87

Vacuum Tube, 12AT7 / ECC81-C, Tube Amp Doctor, Premium Selected, Preamp

$25.47 $15.29

Siemens E188CC 7308 Gold Pin *Amplitrex Tested*

$74.8 $44.88

Manley Steelhead RC SE Mk II - Audiophile HIfi Stereo Tube Preamplifier w OG Box

$6155.6 $3693.36

Synergy Friedman BE-DLX 2-channel Preamp Module

$299.2 $179.52

Two 6AN8A Vacuum Tubes - Pentode/Triodes for Vintage Audio Amps and PreAmps

$13.2 $7.92

FX-AUDIO- TUBE-01J Tube Preamplifier Line Amplifier NFJ/ TUBES NOT INCLUDED

$35.2 $21.12

Warm Audio WA-MPX Single Channel Tube Mic Preamp

$659.12 $395.48

Phono Preamp Vacuum Tube Pre-amp for Home Theater Amplifier

$20.15 $12.09

National 6201/12AT7WB Audio Amplifier Vacuum Tube Preamp Radio Electronics NOS

$30.8 $18.48

HiFi Vacuum Tube Preamp Stereo Audio Switcher Box Desktop Headphone Amp

$57.95 $34.77

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

$5.24 $3.15

XiangSheng 728A Vacuum Tube Preamplifier HIFI EXQUIS 12AT7 12AU7 6Z4 Silver

$386.24 $231.74

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

$33.4 $20.04

Pair of Mullard 12AT7 / ECC81 New Production Preamp Vacuum Tube

$47.44 $28.46

JJ E88CC / 6922 Preamp Vacuum Tube

$21.96 $13.18

Pair of Sovtek 12AX7WB Preamp Vacuum Tube

$56.24 $33.74

Pair of JJ ECC832 / 12DW7 Preamp Vacuum Tube

$52.72 $31.63

Hifi Tube Amp Preamp for Record Player Vacuum Valve Amplifier

$19.36 $11.62

Vacuum Electron Tube Valve Preamp Amplifier Hifi Pre-amp for Phono

$19.62 $11.77

OriPure Hand-made All Tube Guitar Amplifier Head OAH-05 5W

$233.64 $140.19

Genalex Gold Lion 12AU7/ECC82 Gold Pin Preamp Tube

$55.44 $33.26

6J11 GE NOS NIB Audio Receiver Preamplifier Compactrons Vacuum Tubes Pair

$19.36 $11.62

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

$87.12 $52.27

Homemade Tube Preamplifier Used F/S

$810.48 $486.29

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

$66.82 $40.1

Circa 1960 Philco 6SN7-GTA Preamp Vacuum Tube tested (results) 80/80

$8.76 $5.26

Pre-Amp Vacuum Tube Blue LED Night Light with Valve from McIntosh Amplifier

$26.36 $15.82

Shuguang 12AT7 Preamp Tube ECC81 Valve #140

$8.08 $4.85

Closely Matched Pair Tung-Sol JAN-CTL 6B4G Same Date MilSpec Tested Good Tube

$86.64 $51.99

12BZ7 Sylvania Audio Receiver Preamplifier Vacuum Tube

$15.84 $9.51

DBX 386 Dual Vacuum Tube Preamp w/ Digital Out 1U Rack Signal Processor - 100V

$285.48 $171.29

RCA 12AT7 ECC81 Vacuum Tubes One Pair Audio HiFi Preamp Amp Amp Mixers.

$22.0 $13.2

Pair of Electro-Harmonix 12AT7 EH Preamp Vacuum Tube

$38.64 $23.18

Bellari VP130 Tube Phono Preamp / Headphone amp

$220.0 $132.0

Vacuum Tube Amplifier Audio 6J4 + 6P6P Stereo HiFi 4 Way Preamp Complete Product

$321.86 $193.12