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

$66.52 $39.92

New Gain Matched Sextet (6 pcs) Electro-Harmonix 12DW7 ECC832 Vacuum Tubes

$237.35 $142.41

Dynavox TPR-2 Sound Converter Tube Preamplifier Phono Preamp SILVER Tube

$140.48 $84.29

Brand New Genalex Reissue GZ34 5AR4 U77 Rectifier Vacuum Tube In Box

$61.35 $36.81

1 x United Electron 12AT7WA preamp tube, Tested Good !

$11.26 $6.76

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

$44.42 $26.65

PreSonus TubePre V2 Single-Channel Tube Preamplifier/DI Box

$140.8 $84.48

DIY 6J1 Vacuum Tube Preamp Amplifier Board For Music Enthusiasts KRI

$14.96 $8.98

One Vintage Sylvania 12AU7A PLATINUM PLUS GRADE Preamp Radio Amp Tube = ECC82

$17.56 $10.54

5814A Vacuum Tubes Sylvania Pair JAN 5814A ECC82/12AU7A Preamp Amps HiFi Audio.

$22.0 $13.2

Warm Audio WA-MPX Single Channel Tube Mic Preamp

$651.2 $390.72

NEW SOVTEK12AX7LPS ECC83 AMP PREAMP TUBE FOR FENDER MESA BOOGIE VOX MARSHALL

$27.5 $16.5

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

$66.87 $40.12

TELEFUNKEN 6DJ8 ECC88 VACUUM TUBE 1962 DIAMOND CURVE TRACER MATCH PAIR PRECISE

$236.72 $142.03

Matched Pair RCA 12AU7A/ECC82/5814 Preamp Vacuum Audio Tube

$110.88 $66.53

Rocktron Gainiac2 2Ch Vacuum Tube Preamp Distortion Guitar Amplifier

$347.11 $208.27

Brand New In Box Genalex Reissue 5AR4 GZ34 U77 Matched Quad (4) vacuum Tubes

$242.27 $145.36

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

$118.8 $71.28

Schiit Lyr+ Hybrid Tube Preamplifier w/ NOS Vintage Westinghouse 6Sn7

$462.0 $277.2

Mini Vacuum Tube Pre-amplifier Stereo Home Preamp HiFi Desktop Headphone Amp

$56.62 $33.98

NEW Vintage 90s Sovtek Russian 12AX7WXT+ Preamp Tube NOS

$20.24 $12.14

JJ Electronics 12AX7S - Mid Gain - Pre-Amp Tube

$20.2 $12.12

Audible Illusions Modulus II Tube Preamplifier Excellent Working Condition

$703.12 $421.88

Vacuum Pre-amp Hi-Fi Stereo Preamp Home Theater DIY Preamp Amplifier Board

$19.79 $11.87

Lot Of 4 Amperex 6DJ8 ECC88 Made In Holland Preamp Vacuum Tubes TV7 Tested Strg

$44.0 $26.4

Vintage Sylvania 12AX7A 7025 Preamp Tube 12AX7 ECC83 Valve #160

$35.01 $21.01

Stereo Preamplifier Home Audio Diy Tube Phono for Turntable

$19.79 $11.87

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

$54.82 $32.89

EKJapan EK-JAPAN ELEKIT TU-8500 Vacuum Tube Pre-amp Kit White phonoequalizer

$422.4 $253.44

TU-8500 Vacuum tube preamplifier kit with built-in phono equalizer amplifier b22

$531.72 $319.03

THD PicoValve Tube Guitar Amplifier Amp Head Jet City w/ Fender 6L6 Power

$215.6 $129.36

Four GE Preamp Tubes - 6SN7 GTB

$105.6 $63.36

Trevor G Lees Mark Three Tube Pre Preamp & Power Supply for Parts/Repair *READ

$352.0 $211.2

Triode Vp-Eq2 Phono Equalizer Vacuum tube from Japan

$399.08 $239.45

TUNG-SOL 12AU7A Dual Triode AUDIO/PREAMP Vacuum Tube VINTAGE TESTED 10.4152-D

$10.52 $6.31

Pair of Genalex - Gold Lion B759 / ECC83 / 12AX7 Preamp Vacuum Tube

$110.8 $66.48

NOS RCA 6AH4GT Line stage Preamp Audio Tube (1 Tube Per Sale )

$15.84 $9.51

GE 6GH8A GREY PLATES PREAMP VACUUM DYNACO SUB TUBE Tested NEW GE-18

$8.8 $5.28

D KLIMO MERLINO 6DJ8(ECC88) Vacuum Tube Preamp Audio Pre-Amplifier Board DIY Kit

$105.75 $63.45

Brand New Electro-Harmonix 7868 Plate Current Matched Quad (4) Vacuum Tubes

$208.03 $124.82

Pre Amp Tube Preamp for Record Player Pre-amp Home Theater Amplifier

$18.61 $11.17

2 RCA 12AU7 aka ECC82 Vacuum Tubes for Audio Amps PreAmps & Test Equipment

$13.2 $7.92

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

$16.72 $10.03

Avalon Design VT-737 SP Vacuum Tube Channel Strip VT737 Compressor Mic Preamp EQ

$1980.0 $1188.0

Vacuum Pre-amp Hi-Fi Stereo Preamp Home Theater DIY Preamp Amplifier Board

$19.8 $11.88

Takamine Tdp400Kv N Equipped With Ctp-3 Tdp Using Vacuum Tube In Preamplifier Sa

$974.43 $584.66

Finished ECC83 ECC82 6Z4 vacuum tube preamplifier Shigeru Wada Japan Circuit

$192.72 $115.64

Sylvania 6SN7WGT Tested Like NOS Balanced Tube

$51.44 $30.87

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

$57.73 $34.64

Vintage Vacuum Tube FM Radio Tuner Home Stereo Audio Preamp Wireless Receiver

$537.68 $322.61

Closely Matched Pair TESLA E34L EL34 Old Czech Republic Tested Like NOS Tube

$148.24 $88.95

Tube Amplifier Hi-fi Stereo Preamp Tube Board Preamplifier Audio Preamp Pre-a...

$27.06 $16.24

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

$115.94 $69.57

DBX 376 1ch Channel Strip Vacuum Tube 12AU7A2 Equipped 4bit/96KHz Mic Preamps

$606.33 $363.8

T4 PRO Vacuum Tube Phono Preamp, MM Turntable Preamplifier, GE5654 Hi-Fi Head...

$88.61 $53.17

First Sound Presence Deluxe MkIII-SI-X Stereo Tube Preamplifier; Paramount

$2958.56 $1775.14

Western Electric 408A Preamp Module? As Is

$105.6 $63.36

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

$103.49 $62.1

PSVANE ACME Series 805 Vacuum Tube Amplifier Matched Pair Preamp Tubes (2 PACK)

$572.0 $343.2

(2) SIEMENS ECC83 12AX7 TUBES Pair ~ Vtg 1960s Pre-Amp Valves ~ TV7 Tested Great

$78.33 $47.0

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

$187.44 $112.46

Gain Matched Pair (2) Psvane 12AX7-S ECC83 Gold Pins Art Series Vacuum Tubes

$87.94 $52.77

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

$132.0 $79.2

McIntosh C1100 Analog Tube Preamplifier w/ original boxes, manual, Remote

$7391.12 $4434.68

Mullard GZ33 CV5745 NOS NIB Tested Strong Balanced Tube

$113.04 $67.83

1 RCA Electron Tube 6679 12AT7 NOS Radio Audio Pre-amp Vacuum Tube NEW

$17.6 $10.56

Type 56 Sylvania NOS NIB Audio Receiver Preamplifier Vacuum Tubes Tested Pair

$23.76 $14.26

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

$20.52 $12.31

Marshall Origin Series ORI5C 5-Watt 1x8" Tube Combo Amp - Near Mint Condition

$206.8 $124.08

6A2 Vacuum Tube Preamplifier Bluetooth 5.0 Amplifier w/ Treble & Bass Adjustment

$43.48 $26.09

Vintage Telefunken Fisher 12AT7 Tube ECC81 Valve #179

$35.01 $21.01

Closely Matched Mullard GZ37 CV378 NOS NIB Tested Strong Balanced Tube

$218.64 $131.19

Vintage Tung Sol 6SL7 GT Vacuum Tube Audio Radio Amplifier Pre Amp

$12.76 $7.66

2x 1964 SameCode Philips Amperex HP Selected (BugleBoy) 6DJ8 ECC88 Holland⊿ 4j4

$214.72 $128.84

MULLARD 12AX7/ECC83 * GAIN TESTED

$26.36 $15.82

Black Box Analog Design MM-1 Vacuum Tube Preamp MM1

$1892.0 $1135.2

Rolls Bellari VP530 Tube Phono Preamp with USB Output NIB

$308.0 $184.8

International 12au7 Ecc82 Tube Preamp Audio Radio Amplifier Vacuum Rare NOS

$66.0 $39.6

6BJ6 Sylvania NOS NIB Audio Receiver Preamplifier Vacuum Tubes Tested Trio

$26.4 $15.84

6463 Raytheon NOS NIB Audio Receiver Preamp Vacuum Tube Tested

$22.0 $13.2

4 RCA Electron Tube 6CB6A 6CF6 NOS Radio Audio Pre-amp Vacuum Tube NEW

$17.6 $10.56

(7) RCA Wurlitzer 12FQ8 Preamp Twin Double-plate Date Match Triode Vacuum Tubes

$17.61 $10.56

RCA 816 CV724 VT-216 NOS NIB Half Wave Mercury Rectifier Tested Strong Tube

$39.12 $23.47

New Gain Tested Electro-Harmonix 7025 (low noise 12AX7) Vacuum Tube

$31.33 $18.8

Vintage RCA 12AX7 Preamp Tube ECC83 Valve #163

$26.04 $15.62

Ken-Rad VT-231 6SN7GT Label GE Tested Like NOS Balanced Tube

$104.24 $62.55

LUXMAN Vacuum Tube Pre Amplifier Amp CL-38uC AC100V

$4443.12 $2665.88

1955 GE / Ken Rad 12AU7 matched PAIR tubes Holy Grail for Prima Luna Preamp

$79.2 $47.52

Drawmer 1960 tube mic pre

$1144.0 $686.4

Closely Matched Pair Cunningham CX 71-A & Westinghouse 171A Test Like NOS Tube

$86.64 $51.99

Avalon Design VT-737sp Vacuum Tube Channel Strip Preamp EQ Compressor 737 sp

$1758.24 $1054.95

Universal Audio LA-610 MkII Classic Tube Channel Strip UA Preamp Compressor EQ

$1320.0 $792.0

GE JG 6136 6AU6WA TUBE MATCHED PAIR

$11.43 $6.86

Ruby Tube 12AT7C ECC81 Chinese Pair of Preamp Vacuum Tube Used & Tested

$17.6 $10.56

Sovtek 6C45Pi Preamp Vacuum Tube

$48.36 $29.02

Turntable Tube Amplifier Phono Preamp Pre-amp for Hifi System

$19.36 $11.62

Closely Matched Pair GE 6AV5GA NOS Tested Strong Tube

$10.96 $6.58

HiFi Vacuum Tube Preamplifier Stereo Audio Preamp 12AU7 6N2 6Z4 6N4 Tube os67

$439.12 $263.48

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

$410.47 $246.29

Gain Matched Octet (8) Psvane 12AX7-S ECC83 Gold Pins Art Series Vacuum Tubes

$329.61 $197.77