4-Way Hi-Fi Vacuum Tube Preamp Stereo Audio Switcher Box Desktop Headphone Amp

$54.27 $32.57

Little Dot MK 2 MK II Vacuum Tube Headphone Amplifier 6J1+6N6 HiFi Audio Amp

$154.0 $92.4

TUBE-3 6J1 Digital vacuum tube auido Amplifier Kit Preamplifier Tube Amplifier

$63.51 $38.11

GE 12AY7 TRUE NOS Gray Plates Vacuum Tubes PLATINUM MATCHED on AT1000 6072

$67.69 $40.62

Vintage Westinghouse 12AU7A Preamp Tube 12AU7 ECC82 Valve #73

$35.01 $21.01

(2) NOS TUNG SOL 6AU7 TUBES f/ AUDIO PREAMPLIFIER

$20.24 $12.14

Pre Amp Stereo Tube Drive Pre-amp for Home Theater Amplifier

$19.76 $11.86

Brand New In Box Gain Tested Mullard Reissue 12AU7 ECC82 Vacuum Tube

$30.35 $18.21

SUNVALLEY SV-722 Vacuum Tube Preamplifier (Marantz 7 Type) Excellent Tested

$1305.48 $783.29

Pair of JJ ECC81 / 12AT7 Gold Pin Preamp Vacuum Tube

$58.0 $34.8

NEW MM + MC Vacuum Tube Phono Preamp Stereo Audio Preamp for Turntable (no tube)

$345.58 $207.35

Diy Tube Preamp for Record Player Pre-amp Turntable Amplifier

$19.79 $11.87

Closely Matched Pair Sylvania JAN-6189 12AU7 ECC82 Same Date NOS NIB Tube

$42.64 $25.59

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

$59.71 $35.83

New Gain Matched Trio Electro-Harmonix 7025 (low noise 12AX7) Vacuum Tubes

$84.77 $50.86

Vintage Jerrold DSA-62 De-Snower Antenna Pre Amplifier - Vacuum Tube Amp NOS

$220.0 $132.0

New Gain Matched Pair Electro-Harmonix 7025 (low noise 12AX7) Vacuum Tubes

$59.12 $35.48

Pair of JJ E88CC / 6922 Preamp Vacuum Tube

$43.92 $26.35

Brand New Mullard Reissue 12AU7 ECC82 Gain Matched Pair (2) Vacuum Tubes

$57.01 $34.21

Mini Tube Preamp Amplifier Board Vacuum 6A2 Tubes Bile Buffer Home Audio Speaker

$43.38 $26.03

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

$71.06 $42.64

ART TPS II Tube Preamplifier System

$149.6 $89.76

PreSonus Studio Channel 1-Channel Vacuum-Tube Channel Strip

$132.0 $79.2

Amperex Tube Type 7788 Application Bulletin 1961 Vacuum Tube Guide Preamp RF

$48.4 $29.04

Qinpu A-6000 MK2 Tube Amplifier 6N3 Audiophile For Speakers and Headset

$110.0 $66.0

Brand New Gain Matched Pair (2) Electro-Harmonix 6SN7 Vacuum Tubes

$67.69 $40.62

XDUOO MU-603 DAC Decoder Bluetooth 5.1 Tube Preamplifier ES9018K2M fo Amplifier

$99.49 $59.7

Unmarked 12AX7 Preamp Vacuum Tube. Grey Plates. Hickok Tested.

$14.96 $8.98

behringer tube ultragain mic100

$45.8 $27.48

beyond / beyond acoustic wired 2S vacuum tube electric acoustic preamp/D

$338.3 $202.98

Vintage RCA 12AU7A Preamp Tube ECC82 Valve

$17.06 $10.24

NEW Wright Audio LT-6P Tube Preamplifier with Bass, Treble Controls - U.S.A.

$2098.81 $1259.28

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

$84.93 $50.96

Art TUBEMPSTV3U Tube MP Studio V3 Microphone Tube Preamplifier

$132.0 $79.2

12AT7 / ECC81 Preamp Tube - JJ Electronic

$24.2 $14.52

Tube Preamplifier Class A Single-Ended XLR Balanced Audio Preamp ARC LS22 x-TOP*

$550.09 $330.06

HITACHI 12AT7 ECC81 PREAMP/AUDIO VACUUM TUBE Tested Strong JAPAN 7.9472-D

$12.28 $7.37

12AT7 Vacuum Tubes Westinghouse Pair ECC81 CV455 Preamps Amp Mixers Radio Ham.

$16.72 $10.03

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

$57.66 $34.6

Matched Pair Sylvania 6189/12AU7WA/ECC83 Vacuum Audio Tube

$133.06 $79.84

HiFi Bluetooth 5.0 Vacuum Tube Preamp Stereo Receiver Headphone Amp USB Player

$60.98 $36.59

Tube Lamp Phono Stereo Preamp

$484.0 $290.4

HiFi JAN5654 Tube Phono Preamp Stereo Pre-amplifier for Turntable/Record Player

$108.41 $65.05

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

$19.8 $11.88

Universal Audio LA-610 MkII Tube Mic Pre+Opto Compressor BStock w/ FULL WARRANTY

$1540.0 $924.0

Behringer VT999 Vintage Tube Monster Overdrive Pedal

$104.72 $62.84

Closely Matched Pair Realistic 6L6GC Black Plate Tested Like NOS Tube

$86.64 $51.99

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

$19.97 $11.99

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

$26.18 $15.71

1PC Pre-amp for Hifi System Audio Preamp Phono Tube Amplifier Turntable Stereo

$17.42 $10.45

DBX 676 Microphone Channel Strip w/Tube Pre 3-Band Parametric EQ Compressor/Lmtr

$818.4 $491.04

12AX7 GE General Electric Audio Receiver Guitar Preamplifier Vacuum Tube Tested

$11.44 $6.86

NOS PAIR HYTRON 6AK5 Black Plate AUDIO PREAMP VACUUM TUBES Tested USA 2.2776-D

$20.2 $12.12

6463 GE NOS NIB Audio Receiver Pre-Amp Vacuum Tubes Tested Pair

$27.28 $16.37

GE 6SN7GTB Twin Triode Vacuum Tube Tested Excellent GR8 Audio Preamp Valve NOS

$8.8 $5.28

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

$427.68 $256.61

Amperex 12AX7 ECC83 Holland Code ... Delta 7A2 Tested Strong Balanced Tube

$51.44 $30.87

CRANE SONG SYREN 500 SERIES TUBE PREAMP

$858.0 $514.8

Tube Preamp Vacuum Tube Valve Preamp Phono Preamp For Turntable

$28.15 $16.89

Pro-Ject: Tube Box DS2 Phono Preamp - Silver - (Open Box Special)

$659.12 $395.48

Vacuum Tube Preamplifier Multifunctional HiFi Valve Headphone Amplifier

$49.34 $29.6

GE 5687WA 5 Star Black Plates AUDIO PREAMPLIFIER VACUUM TUBE Tested 4.2922-D

$17.56 $10.54

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

$209.08 $125.45

5Y3GT Vacuum Tube Hallicrafters VT197A Audio HiFi Ham Amp Mixer Preamp.

$8.8 $5.28

13DR7 Mixed Brands NOS NIB Audio Receiver Preamplifier Vacuum Tubes Tested Pair

$22.0 $13.2

Electro-Harmonix 12AT7 Preamp Tube

$22.0 $13.2

Douk Audio T3 PRO MM Phono Stage Preamp Mini Stereo Vacuum Tube Preamplifier

$49.63 $29.78

Ruby 6 Pack 12AX7AC5 HG Preamp Tubes

$103.88 $62.33

Matched Pair CONN 12AU7/ECC83/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$73.92 $44.36

(4) RCA 5965 LONG BLACK PLATE ANGLED D GETTER AUDIO PREAMPLIFIER TUBES

$30.8 $18.48

One (1ea) 12AX7 Sylvania Long Plate O Getter Cooper Rods Tested Balanced Tube

$28.56 $17.14

6J1 Valve Pre-amp Tube PreAmplifier Board AC 12V Headphone Amplifier + Case

$3.79 $2.28

Vintage Pinnacle 12AU7/ECC83/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$29.57 $17.75

Warm Audio WA-MPX Single-Channel Tube Mic Preamp

$659.12 $395.48

Little Dot MK 2 MK II Vacuum Tube Headphone Amp 6J1+6N6 Pre-amplifier HiFi

$149.6 $89.76

A1 Vacuum Tube Phono Preamp, Headphone Amp, Hi-Fi Audiophile Preamplifier for...

$187.17 $112.31

Tube Amplifier Vacuum Preamplifier Pre-amp for Phono Board Turntable

$18.81 $11.29

New Matched Trio (3) Psvane 12AU7-S ECC82 Gold Pins Art Series Vacuum Tubes

$121.59 $72.96

JJ E83CC/12AX7 Frame Grid Preamp Vacuum Tube

$25.48 $15.29

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

$21.96 $13.18

USA Seller -- Psvane ECC83 / 12AX7 Preamp Tube - Ships Free!

$21.96 $13.18

FX-AUDIO- TUBE-01J Tube Preamplifier Line Amplifier NFJ Original Model Black JP

$56.23 $33.74

Pair of Sovtek 6SN7GT Preamp Vacuum Tube

$50.96 $30.58

One Vintage Sylvania 12AU7A GOLD GRADE Preamp Radio Amp Tube = ECC82, 6189, 5814

$11.4 $6.84

T9 Preamplifier 2x6E2 Electronic Tube Amplifier MM/MC Turntable Microphone Amp

$85.28 $51.17

Pair of Mullard CV4004 / 12AX7 New Production Preamp Vacuum Tube

$49.2 $29.52

Sylvania 6SN7WGT Tested Good Tube

$39.12 $23.47

2 MATCHED NOS 6922 6DJ8 ECC88 TUBES PHILIPS FOR PREAMP MICROPHONE MIC w/Dampers

$73.04 $43.82

Vintage CBS 12SA7 Preamp Tube Valve #127

$8.08 $4.85

Wells Audio Commander Level II Stereo Tube Preamplifier; CLII

$2295.92 $1377.56

HiFi 12AU7 Vacuum Tube Stereo Preamplifier Board Refer US CARY-SLP90 Circuit

$36.96 $22.18

Audio Research LS28SE - Vacuum Tube Stereo Preamplifier

$7915.6 $4749.36

12BZ7 Sylvania Audio Receiver Preamplifier Vacuum Tubes Tested Pair

$22.0 $13.2

GE JAN 6829 Vacuum Tubes - Vintage Twin Triodes for Audio Amps & PreAmps

$8.8 $5.28

6CG7/6FQ7 Vacuum Tube GE Audio HiFi Amp Mixers Preamps Vintage Radios and TV.

$8.8 $5.28

Closely Matched Pair Sylvania 6SN7WGTA Tested Like NOS Balanced Tube

$104.24 $62.55

Tight Match Pair GE 12AX7 Long Grey Plate Foil D-Getter Tested Balanced Tube

$51.44 $30.87

Vacuum Tube Preamplifier Multifunctional HiFi Valve Headphone Amplifier

$33.48 $20.09

HiFi 12AX7 Vacuum Tube Preamp Stereo Audio Desktop Preamplifier Refer to Marantz

$198.09 $118.86

Fosi Audio GR40 Tube Preamp w/DAC Stereo Headphone Amplifier for Active Speakers

$105.6 $63.36