CANBERRA - # 2007 - PHOTOMULTIPLIER TUBE BASE - PRE-AMP - TUBE BASE (NEW NOS)

$525.8 $315.48

Refer Marantz 7 Preamplifier HiFi 12AX7 Tube Remote Preamp Audio With Display

$178.64 $107.19

1pc JADIS JP200 Tube Preamplifier Preamp Finished Board (no tubes included) #F6

$192.15 $115.29

ART TPSII 2-Channel Tube Preamp System & Variable Valve Voicing

$215.08 $129.05

Digitech GSP-2101 Studio Tube Preamp/Multi Effects Guitar Processor Purple Haze

$176.0 $105.6

Pair Ruby 12AX7 HG Preamp Vacuum Tubes, Tested

$18.48 $11.09

Behringer T1953 Tube Ultragain PreAmp Vintager Series *UNTESTED AS-IS ONLY*

$74.61 $44.77

EK Japan TU-8500 ELEKIT Vacuum Tube Pre-amp Kit Phonoequalizer

$422.4 $253.44

Sylvania 6SN7GT VT-231 Preamp Tube Tests NOS

$66.0 $39.6

NOS NIB SYLVANIA 12AX7WA Matching Pair Low Noise Preamp Tubes

$79.2 $47.52

Yaqin MS-12B Tube Preamp With Phono Stage with Box and Original Owners Manual

$263.96 $158.38

Tube MP Project Series Art TUBEMPPS Microphone Preamp With Mic

$45.98 $27.59

MINT! PRESONUS ACOUSTI-Q TUBE PREAMP

$211.2 $126.72

Upgraded Preamplifier Amplifiers HiFi Tube Preamp Amp Speaker Sound Home Theater

$23.89 $14.33

ART TPSII 2-Channel High Performance Tube Preamp System & Variable Valve Voicing

$255.2 $153.12

Deluxe Power Supply Capacitor Restoration Kit McIntosh C-20 C20 Tube Preamp

$206.8 $124.08

Balanced Audio Technology BAT VK30SE - Audiophile Hifi Stereo Tube Preamplifier

$1584.0 $950.4

Reference Marantz M7 Circuit Preamplifier DIY Kit HiFi Audio 12AX7 Tube Preamp

$118.8 $71.28

Rogue Audio R99 Super Magnum Stereo Tube Preamplifier; MM & MC Phono Upgrade

$1231.13 $738.68

Vintage Modified Dynaco PAS-2 Stereo Tube Preamplifier / KT10

$668.76 $401.26

1-Tube Preamplifier, Possibly Homemade

$8.8 $5.28

Pro-Ject Tube Box S2 MM & MC Phono Preamplifier

$324.73 $194.84

JJ 12AY7 Preamp Vacuum Tube

$19.32 $11.59

LOT OF TEN 12AX7 GUITAR AMP PREAMP TUBES SOVTEK MESA EH 12AX7A LPS ETC UNTESTED

$19.28 $11.57

L's (Lite) Audio A28 Tube Preamplifier, dual mono, stereo pair,sold per unit

$220.0 $132.0

Two Notes Le Clean 2-Channel U.S. Tones Tube Preamp Pedal

$260.32 $156.19

Behringer Ultragain Pro MIC2200 2-channel Tube Mic/Line Preamp Good Condition

$70.4 $42.24

SYLVANIA 12AX7A Matching Pair Preamp tubes

$52.8 $31.68

Power Supply and Audio Electrolytic Cap Restore Kit -Marantz 7 7C Tube Preamp

$236.72 $142.04

Nobsound E6 Direct Heated Vacuum Tube Stereo Pre-Amp | Grade B

$31.68 $19.01

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

$132.09 $79.26

PreSonus ACOUSTI-Q | Dual Tube Preamplifier with Signal Blending Pre-Owned

$220.35 $132.21

*New* Electro-Harmonix 12AT7 EH Preamp Vacuum Tube

$13.2 $7.92

Magnavox 12DW7 Preamp Vacuum Tube Great Britain

$17.61 $10.56

Douk Audio HIFI Tube Phono Stage Preamplifier for MM Turntables Stereo Preamp

$144.32 $86.59

LOT OF TEN 12AX7 GUITAR AMP PREAMP TUBES GROOVE TUBES FENDER SOVTEK UNTESTED

$19.28 $11.57

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

$142.56 $85.54

Mini MM/MC Phono Preamp Vacuum Tube Pre-amplifier for Turntables Headphone Amp

$50.33 $30.2

HiFi Remote Control 12AU7/ECC82 Tube Preamplifier Refer US CARY-SLP90 Circuit

$254.32 $152.6

BASS Tube Preamp FATBASS

$184.8 $110.89

Douk Audio P2 Bluetooth Vacuum Tube Preamp Headphone Amplifier USB Music Player

$56.67 $34.0

HiFi 7-Band EQ Equalizer Vacuum Tube Stereo XLR Balanced Preamp w/Tone Control

$89.76 $53.86

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

$114.39 $68.63

HIFI Tube Preamp with Bluetooth USB DAC Headphone Amplifier D/A Converter DSD256

$176.0 $105.6

Soho Acoustics Qtr-1 Tube Guitar Preamp Modified

$440.0 $264.0

NOS NIB SYLVANIA JAN-CHS 6SN7WGT Brown Base Low Noise Preamp Tube

$52.8 $31.68

SIEMENS CCa Tube E88CC Each… 2 Total

$44.0 $26.4

NOS NIB GE 12AX7A 7025 Low Noise Preamp Tube

$39.6 $23.76

Vintage Untested General Electric GE UPX-003A Tube Phono / Mic Mono Preamp

$35.2 $21.12

ART Tube MP Professional Tube Mic Preamp

$44.0 $26.4

ART Pro Audio Tube MP External Tube Microphone Preamp Personal Processor Series

$43.12 $25.88

DIY PCB - High-end Tube Microphone Preamp

$26.4 $15.84

6DJ8 (6N11/E88CC/6922 ) Eelectronic Tube Preamp Bile Preamp

$13.76 $8.26

Mini Vacuum Tube Preamp Phono Stage Mini Stereo Preamplifier for Home Turntables

$37.4 $22.44

RCA 7025 Tube

$8.76 $5.26

12AU7 Ecc82 Pair Valve Vintage Hifi Audio Preamp Tested

$8.58 $5.15

Behringer ADI21 V-Tone Acoustic Driver Direct Recording Preamp/DI Box

$25.52 $15.32

Wright Sound Company Tube Preamp WPL10V WPS05 w/ MM Phono Stage

$787.6 $472.56

Pre Amp Stereo Tube Drive Vacuum Electron Valve Preamp Amplifier

$18.6 $11.16

ORIGINAL WOOD CABINET FOR THE FISHER 80-C MASTER AUDIO CONTROL TUBE PREAMP

$157.53 $94.52

ATS25 807 X3 Valves Vintage Hifi Audio Preamp UnTested

$8.58 $5.15

Sargent Rayment SR2000 Stereo Tube Preamp Preamplifier w/ SR 900 Power Supply

$1583.12 $949.88

New 1x Electro Harmonix 12AX7 / ECC83 | One / Single Preamp Tube | EH

$22.0 $13.2

ART TPS II 2-channel Tube Microphone Preamp

$221.76 $133.06

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

$1055.13 $633.08

Peachtree Audio Nova Pre Tube Hybrid Pre Amplifier Black Case

$329.96 $197.98

6J1 Valve Pre-amp Tube PreAmplifier Kit Assembled Board Audio DIY

$21.1 $12.66

A+ Lot (5) 1963/4 Amperex Philips Heerlen 6DJ8 ECC88 Preamp Tubes “O” Halo GA7

$127.6 $76.56

Mapletree Audio Designs Line 2CHT Tube Preamplifier w PS-2D Power Supply -- KT

$787.6 $472.56

Art Applied Research And Technology Professional Tube Preamp Compressor Amp

$110.0 $66.0

Heathkit AA-20 Tube Preamplifier -- KT

$435.6 $261.36

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

$127.6 $76.56

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

$30.8 $18.48

NOS Sound Valves VTP-100 Tube Preamp TRANSFORMER 464107U ONLY

$43.12 $25.88

Digitech GSP-2101 Studio Tube Preamp/Multi Effects Guitar Processor Gold Face

$176.0 $105.6

Remote Stereo Balance Tube preamplifier Vacuum tube preamp base on ARC preamp

$347.6 $208.56

Rocktron Tube Series Gainiac TUBE Preamp

$154.0 $92.4

LOT OF TEN MARSHALL PREAMP TUBES MOST 12AX7 ECC83 UNTESTED

$19.73 $11.84

4 vintage 1950s RCA MI-9268 plug in tube preamps preamplifier modules mic

$440.0 $264.0

NOS NIB SYLVANIA JAN-CHS 6SN7WGT Brown Base Low Noise Matching Pair Preamp Tubes

$132.0 $79.2

Genz Benz GBE-250C Bass Head, Tube Pre-Amp, Active EQ, Dynamic Controls, Case

$264.0 $158.4

Ek Japan Tu-875 Tu-870 Vacuum Tube Preamp Power Amplifier #JAB13260

$521.78 $313.07

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

$51.92 $31.16

ELEKIT TU-875 Vacuum Tube Preamplifier

$302.21 $181.33

Suca Audio Tube-T1 Preamp Audiophile tubet1 EXCELLENT

$35.2 $21.12

6J1 Valve Pre-amp Tube Pre Amplifier Kit Assembled Board Audio Musical Fidelity

$19.71 $11.83

ART Tube MP Studio V3 Tube Microphone Preamp Complete In Box Working

$44.0 $26.4

Art Tube MP Studio Microphone Amplifier Preamp AC Power Adapter Included Black

$35.2 $21.12

Mullard 12AU7A ECC82 Shield Low Noise Matching Pair Preamp Tubes UK

$132.0 $79.2

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

$62.86 $37.72

NOS NIB RCA Red Base 5691 Low Noise Preamp Tube

$88.0 $52.8

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

$7.78 $4.67

PreSonus BlueTube DP 2-Channel Mic/Instrument Tube Preamp - (Used)

$88.0 $52.8

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

$307.12 $184.28

6J1 Valve Pre-amp Tube PreAmplifier Kit Assembled Board Audio Musical Fidelity

$20.06 $12.04

ART Tube MP Studio Mic Preamp - Tested-

$41.36 $24.82

Rare NOS Tung Sol 12BH7A Tubes Black Plates O-Get MATCHED & BALANCED 12BH7 L@@K!

$88.0 $52.8

Guitar Tube Preamp Supercharger (SLO)

$184.8 $110.89

Professor Dan - Vacuum Tube Microphone Preamplifier and EQ

$3080.0 $1848.0

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

$165.44 $99.27