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

$202.4 $121.44

New Matched Quintet (5) Psvane 12AU7-S ECC82 Gold Pins Art Series Vacuum Tubes

$197.44 $118.47

Fosi Audio P3 Tube Preamp Amplifier With Bluetooth AptX LL HD Bass Treble Tone

$26.4 $15.84

Preamp Stereo Audio HiFi Tube Preamplifier 12AU7 12AX7 6Z4 Vacuum Tube US

$247.07 $148.25

Bellari VP129 Tube Phono Preamp /Headphone amp W/AC Adapter

$87.96 $52.78

Sylvania Preamp Vacuum Tube / ECC83 12AX7 / KT1

$24.6 $14.76

Behringer MIC500USB Tube Microphone Preamp

$87.12 $52.28

Matched Pair Telefunken ECC81/12AT7 Tilt Getter Pre-Amp Dual Triode Tube TESTED!

$44.0 $26.4

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

$142.56 $85.54

MX110 Vacuum Tube Tuner Preamp "z-series From vintage audio collection VERY NICE

$1051.6 $630.96

6SN7GTB GE GP NOS NIB Audio Receiver Guitar Preamp Vacuum Tubes Tested Pair

$22.88 $13.73

RCA 6189 / 12AU7 Vacuum Tube Pre-Amp, Black Plate, Made in USA, Vintage

$10.52 $6.31

Finished 12AX7+12AU7+6Z4 vacuum tube stereo preamp with Bluetooth input L13-4

$205.95 $123.57

[Upgraded] Douk Audio P1 HiFi Bluetooth 5.0 Vacuum Tube Preamp Mini USB DAC Amp

$105.6 $63.36

HITACHI 12AT7 PREAMP/AUDIO VACUUM TUBE JAPAN $ Back If Problem

$14.3 $8.58

Pair of Genalex - Gold Lion B739 / ECC81 / 12AT7 Preamp Vacuum Tube

$110.8 $66.48

6SN7GTB Raytheon Audio Receiver Guitar Preamp Vacuum Tubes Tested Pair

$22.0 $13.2

Soldano Caswell X99 Guitar Preamp Midi Motorized Preamplifier - rare!

$7480.0 $4488.0

Pair of JJ E88CC / 6922 Gold Pin Preamp Vacuum Tube

$61.52 $36.91

6SL7GT RCA Fat Base Red Letter Audio Guitar Preamp Vacuum Tubes Tested Pair

$21.12 $12.67

Vacuum Tube, ECC99, JJ Electronics, Gold Pins, Preamp

$38.68 $23.21

7548 NOS NIB CBS Audio Receiver Preamp Vacuum Tube

$22.0 $13.2

Alctron TMP-6 Tube Microphone Pre-Amplifier 16 Different Tone Settings Studio

$80.09 $48.06

MINT 1997 Rocktron Gainiac 2 Channel Tube Guitar Rackmount Preamp!

$176.0 $105.6

A1 Vacuum Tube Phono Preamp Headphone Amp Hifi Audiophile Preamplifier For Mm Tu

$167.27 $100.36

Vintage 1970s Magnavox Mullard 12DW7 Preamp Tube ECC832 Valve #142

$26.04 $15.62

SYLVANIA 6SC7 Twin Triode High MU Preamp tube New Old Stock Tested Mint no box

$17.56 $10.54

Phono Preamp Vacuum Tube Stereo Drive Pre-amp for Hifi System Amplifier

$19.76 $11.86

New Matched Quad (4) Sovtek 6H30Pi Vacuum Tubes

$191.64 $114.99

new 6J1 Valve Preamp, Vacuum Electrom Tube Preamp Valve Preamp Amplifier Board

$14.68 $8.81

JJ ECC83MG Preamp Vacuum Tube

$17.56 $10.54

Mullard 12AT7 / ECC81 New Production Preamp Vacuum Tube

$23.72 $14.23

JJ ECC803s / Hi-Performance 12AX7 Gold Pin Preamp Vacuum Tube

$33.4 $20.04

Electro-Harmonix 12AT7 EH Preamp Vacuum Tube

$19.32 $11.59

Three Pack of Electro-Harmonix 12AX7 EH Preamp Vacuum Tube

$65.87 $39.53

JJ E88CC / 6922 Gold Pin Preamp Vacuum Tube

$30.76 $18.46

JJ ECC82 / 12AU7 Gold Pin Preamp Vacuum Tube

$27.24 $16.35

(2) RCA 6SN7GTB AUDIO PREAMPLIFIER TUBES - TV7 TESTED - STRONG - BALANCED

$22.0 $13.2

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

$215.6 $129.36

Pair of Genalex - Gold Lion B749 / ECC82 / 12AU7 Preamp Vacuum Tube

$110.8 $66.48

JJ ECC99 RF Double Triode Preamp Vacuum Tube

$24.2 $14.52

NEW (4) JJ Electronic ECC83 S JJ12AX7-S Vacuum Pre-Amp Tubes NOS

$66.0 $39.6

Bellari VP130 Tube Phono Preamp / Headphone amp

$132.0 $79.2

Pair of Electro-Harmonix 12AX7 Gold Pin Preamp Vacuum Tube

$70.32 $42.19

High Voltage Vacuum Tube Preamplifier MINI 2J27S Heaterless Tube Preamp

$52.8 $31.68

Vacuum Tube, EF806 / EF86 / 6267, JJ Electronics, Longer Plate, Preamp

$37.8 $22.68

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

$56.03 $33.62

Groove Tubes GT-ECC83-S Select Preamp Tube

$26.4 $15.84

Vintage RCA 12AU7A PLATINUM PLUS GRADE Clear Top Preamp Tube = (6189 5814 7316)

$19.32 $11.59

HiFi 6922 Vacuum Tube Preamplifier Remote Control D.Klimo Stereo Audio Preamp

$350.24 $210.15

Finished Hifi Vacuum Tube Tone Preamplifier 12AT7 +12AU7 +6Z4 With 4 Ways Input

$321.2 $192.72

ART Tube MP Project Series Low Noise High Output Microphone Preamp Used

$51.92 $31.16

Fosi Audio P1 Tube Preamplifier Mini Hi-Fi Stereo Preamp W/ Extra tubes

$30.8 $18.48

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

$29.04 $17.42

NOS SOUND VALVES VTP-101(i) Vacuum Tube Preamplifier POWER TRANSFORMER

$59.39 $35.63

ELEKIT Power Amplifier Vacuum Tube pre-amplifier assembling Kit TU-8550N Silver

$719.67 $431.8

RARE 1933 RCA PA 90 A1 Vacuum Tube Preamp Preamplifier

$1320.0 $792.0

DIY PCB - High-end Tube Microphone Preamp

$26.4 $15.84

Art Tube MP Project Series Professional Microphone Instrument Preamplifier Read

$44.0 $26.4

RCA 12AU7 CLEAR TOP VACUUM TUBE PAIR TEST NOS 100 % GRAY PLATE TUBE AMP PREAMP

$21.12 $12.67

Monoprice Stereo Hybrid Tube Amplifier 2019 Edition, 25 Watt With Bluetooth

$114.39 $68.63

Electro-Harmonix 12AU7A / ECC82EH Lot x4 Preamp Vacuum Tube UNTESTED

$8.66 $5.2

Vacuum Tube Circuit Design: Guitar Amplifier Preamps, Second Edition - GOOD

$89.9 $53.94

Groove Tubes GT-12AY7 S Select (Single) Preamp Tube

$30.8 $18.48

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

$49.63 $29.78

Mini MM RIAA Vacuum Tube Preamp for Record Players Stereo Line Level Amp

$38.72 $23.23

6SN7GT GE Audio Receiver Guitar Preamp Vacuum Tubes Tested Pair

$21.12 $12.67

1 X Tung Sol 5751 pre-amp tube, Brand New in Box !

$27.78 $16.67

ART Solo MPA Multi-voice Tube Preamplifier

$264.0 $158.4

Presonus BlueTube DP v2 2-Channel Mic/Instrument Tube Preamp

$224.4 $134.64

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

$256.43 $153.86

GE 12AU7 VACUUM TUBE PAIR TEST NOS 96% GRAY SHORT PLATE PREAMP TUBES 1960s

$22.0 $13.2

Vacuum Tube, 5751, Tube Amp Doctor, Premium Selected , Preamp

$24.56 $14.74

Behringer Tube Ultrgain MIC100 Vacuum Tube PreAmp w/ Limiter jun24 #5

$34.32 $20.6

Vacuum Tube, E83CC Frame Grid, JJ Electronics, Preamp

$25.52 $15.32

Groove Tubes - The Brick - Tube Mic Preamp/DI

$528.0 $316.8

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

$127.6 $76.56

Rogue Audio RP-1 Stereo Tube Preamplifier; MM & MC Phono (No Remote)

$1055.13 $633.08

Groove Tubes GT-12AY7 Select Preamp Tube

$30.8 $18.48

Groove Tubes Gold Series GT-12AT7 Single Preamp Tube

$26.4 $15.84

DIY kits 6N3 Vacuum Tube PreAmplifier SRPP Board Fit for 5670

$24.78 $14.87

Vacuum Electron Tube Valve Preamp Pre-amp for Phonograph Amplifier

$19.96 $11.98

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

$57.94 $34.76

Behringer TUBE ULTRAGAIN MIC500USB Audiophile Vacuum Tube Preamplifier

$87.12 $52.28

🇺🇸Peavey Super T Preamp Tube 12AT7EH

$10.56 $6.34

Behringer Tube Ultragain Mic100 Vacuum Tube Preamplifier with Limiter Not Tested

$26.4 $15.84

For Douk Audio T4 PRO Vacuum Tube Phono Preamp / Headphone Amplifier

$45.76 $27.46

Behringer MIC300 Audiophile Vacuum Tube Preamplifier with Limiter

$102.06 $61.24

JAN General Electric 6189 / 12AU7 Pre-amp vacuum tube NOS 1980's

$8.81 $5.28

9 Telefunken ECC81 / 12AT7 - Grey Rib Plate Preamp Vacuum Tubes - FREE Shipping!

$228.8 $137.28

TUNG-SOL JAN-CTL-6SN7WGT AUDIO PREAMPLIFIER TUBE - TV7 TESTED

$19.36 $11.62

Ampapa A1 HIFI 5654 Tube Phono Stage for Turntables Stereo Audio Preamp Home Amp

$108.41 $65.05

Tube Preamp Vacuum Electron Tube Valve Preamp Phono Preamp For Turntable

$18.39 $11.03

Electro-Harmonix 6922 EH Gold Pin Preamp Vacuum Tube

$36.96 $22.18

Fx-Audio Tube-01J Black Tube Preamp Line Amplifier Nfj Original Model Black

$54.74 $32.85

Mini Tube Pre-Amp With Bluetooth 5.0 Headphones Aux/USB/SD Play :Liswor Audio

$39.6 $23.76

Vacuum Tube, EF86 / 6267, Tube Amp Doctor, Premium Selected, Preamp

$30.1 $18.06

OriPure Hand-made All Tube Guitar Amplifier Head OA-H15 15W

$221.76 $133.06

Peavey 6505® MH

$420.37 $252.23

Split Hifi Ground Grid (GG) Tube preamplifier ECC82 vacuum Tube preamp (B6-8)

$200.64 $120.39