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

$140.48 $84.29

Pro-Ject Tube Box DS3 B True Balanced Phono Preamplifier Silver

$967.12 $580.28

Fosi Audio Box X1 Hi-Fi Phono Preamp for Turntable MM Phonograph Preamplifier

$17.16 $10.3

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

$69.45 $41.67

FX Audio TUBE-01J | Vacuum Tube Preamp Japan Express / Free Shipping

$71.72 $43.04

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

$55.43 $33.26

PCL85 18GV8 Amperex NOS NIB Audio Receiver Preamp Vacuum Tubes Tested Pair

$22.0 $13.2

Vintage General Electric 5751 Preamp Tube Valve GE 12AX7 #175

$35.01 $21.01

HiFi Vacuum Tube Preamp 4-way Stereo Audio Switcher Box Desk Headphone Amplifier

$66.52 $39.92

HiFi 12AT7 Vacuum Tube SRPP Preamplifier Board PCB Base On Hetian Mau's Preamp

$14.08 $8.45

Dayton Audio HTA20 Integrated Stereo Hybrid Tube Amplifier 20 Watts

$131.99 $79.19

Turntable Tube Amplifier Phono Preamp Pre-amp for Hifi System

$19.36 $11.62

6BL8 6LN8 Raytheon NOS NIB Audio Receiver Preamplifier Vacuum Tubes Tested Pair

$22.0 $13.2

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

$208.56 $125.14

DAC-T1 Preamplifier Bluetooth5.0 HiFi 5654 Electronic Tube Amplifier DAC Decoder

$116.21 $69.73

HTA20 Integrated Stereo Hybrid Hi-Fi Vacuum Tube Class A/B Amplifier 20 Watts...

$177.1 $106.26

New JJ Tesla 6CA7 Fat Bottle EL34 PLATE CURRENT Matched Pair (2) Vacuum Tubes

$69.16 $41.5

Vintage Heathkit AA-141 Vacuum Tube Stereo Preamplifier

$1407.12 $844.28

Pair of JJ ECC83 / 12AX7 Gold Pin Preamp Vacuum Tube

$61.52 $36.91

6SK7GT RCA Audio Receiver Guitar Preamplifier Vacuum Tubes Tested Pair

$24.64 $14.78

Closely Matched Pair GE 7581A 6L6GC KT66 NOS NIB Tested Strong Tube

$201.04 $120.63

6BN8 RCA NOS NIB Audio Receiver Preamplifier Vacuum Tubes Pair

$22.88 $13.73

YAQIN MS-23B Hifi Tube Phono Amplifier 12AX7 Preamplifier Preamp Tube Amplifier

$237.6 $142.56

PSVANE Matched Pair Vacuum Tube ACME Series KT88 Tubes Amplifier Preamp (2 PACK)

$167.2 $100.32

Vintage Marshall ECC83 / 12AX7 Tube Valve #38

$43.99 $26.39

Vacuum Tube, 12BH7-A, JJ Electronics, Preamp

$21.96 $13.18

DBX 376 Vacuum Tube Channel Processor w/ Digital Out with Manual

$213.18 $127.91

Amperex Bugle Boy 12AT7 ECC81 vacuum Tube Made In France HiFi PreAmp Guitar TK2

$26.36 $15.82

Matched Pair Sylvania 5963/12AU7/ECC83 Preamp Vacuum Tube Valve- Bangybang.tube

$96.1 $57.66

2 RCA 12AX7 BLACK PLATE VACUUM TUBES 3

$70.41 $42.24

Ampeg Bass Amplifier Audio Catalog 2004 Vacuum Tube Preamp Pro Series Portabass

$15.4 $9.24

Genalex Gold Lion 12AT7/ECC81 Gold Pin Preamp Tube

$55.44 $33.26

YAQIN MC-84L Class A Push Pull Tube Amplifier Hifi Preamplifier Vacuum Tube Amp

$553.52 $332.11

Pre-amp for Phonograph Vacuum Electron Tube Valve Preamp Stereo Amplifier

$19.36 $11.62

Line Magnetic LM-512CA Tube Amplifier Flagship preamp PRE AMP 3*RCA 1*XLR Input-

$4636.72 $2782.04

RCA Canada Type 6AU6 Sharp Cutoff Pentode Vacuum Tube Audio Preamp NOS/NIB

$3.78 $2.27

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

$17.61 $10.56

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

$51.93 $31.16

Gain Matched Sextet (6) Psvane 12AX7-S ECC83 Gold Pins Art Series Vacuum Tubes

$248.18 $148.91

HiFi 6j4+6p6p Class A preamp Tube valve amplifier preamplifier

$172.48 $103.49

6LN8 6BL8 Raytheon NOS NIB Audio Receiver Preamplifier Vacuum Tubes Tested Pair

$22.0 $13.2

Genalex - Gold Lion E88CC / 6922 Preamp Vacuum Tube

$60.68 $36.41

Tube T6 PRO Bluetooth 5.0 Tube Preamplifier Hi-Fi Headphone Amp Vacuum Tube

$116.01 $69.61

Vizion Valve Extreme Vacuum Tube Overdrive Preamplifier

$268.4 $161.04

Tube Amplifier Abs Hifi -Fi Stereo Preamp Phono for Turntable

$25.39 $15.24

12AU7 Preamp Vacuum Tube Single

$38.38 $23.03

4 (four) RCA Wurlitzer 12FQ8 Preamp Twin Double-plate Triode Tubes 1961

$12.32 $7.4

Pre Amp Tube Headphone Preamp Pre-amp for Hifi System Amplifier

$18.8 $11.28

Mullard 12AX7 Russian Preamp Tube (5-pack) Bundle

$116.67 $70.0

JJ TESLA ECC82 12AU7 MATCHED TRIODE SECTIONS PREAMP TUBE PREMIUM BRAND NEW

$30.8 $18.48

RKY-mcintosh N3 C2200 Tube Preamplifier Board Hifi Tube Preamp with 6N3 Tube ot2

$59.61 $35.77

Ruby 12ax7 Preamp Vacuum Tube Tests Fine/guitar Vintage Electron.

$18.92 $11.35

Warm Audio WA-2MPX 2-channel Tube Mic / Line / Instrument Preamp - Rackable

$967.96 $580.78

JOYO JACKMAN II Mini Amp Guitar Amplifier Head 20W Preamp 2 Channel Footswitch

$142.56 $85.54

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

$386.24 $231.74

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

$29.57 $17.75

Closely Matched Pair Mullard EL34 Code Xf2 B1C5 and Xf2 B4B1 Tested Good Tube

$218.64 $131.19

Vintage Realistic Long Life 12AX7 Preamp Tube ECC83 Valve #133

$17.06 $10.24

MIC300 Audiophile Vacuum Tube Preamplifier with Limiter

$126.5 $75.9

HiFi Vacuum Tube Preamp Bluetooth 5.0 USB DAC Stereo Headphone Amplifier APTX

$82.4 $49.44

1 PCS PSVANE ECC82 Preamplifier Tube Amplifier Vacuum Tube Replace 12AU7 Tube

$27.28 $16.37

Hazelrigg Industries DVA | 500 Series Vacuum Tube Microphone Preamplifier/DI

$1055.13 $633.08

Linear Tube Audio MicroZOTL Stereo Tube Preamplifier; Level 2 Upgrade

$3410.0 $2046.0

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

$57.02 $34.21

EK Japan ELEKIT TU-8500 Vacuum Tube Pre-amp Kit Phono Equalizer

$486.77 $292.06

MULLARD 12AT7 WA CV4024 KQDD/K NOS Audiophile Preamp Tubes

$66.0 $39.6

GE Preamp Tube - 6SN7GTB - NOS from the Schenectady plant in NY made in 1980

$23.47 $14.09

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

$33.09 $19.86

G9 Tube Microphone Preamplifiers

$968.0 $580.8

1EA. JJ 5751 PREAMP VACUUM TUBE BRAND NEW IN BOX ***FREE SHIPPING***

$30.76 $18.46

1961 NOS SIEMENS PCC88 7DJ8 ECC88 6922 sub SINGLE FRAME-GRID TUBE for MICROPHONE

$133.76 $80.26

ART Pro MPAII Tube Vacuum Tube Preamp

$459.8 $275.88

ART Tube MP Project Series Tube Microphone/Instrument Preamp USED

$43.96 $26.38

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

$18.98 $11.39

Sylvania 12AX7 Preamp Vacuum Tube Military Grade 12AX7 Tested (T24)

$35.21 $21.12

7DJ8 PCC88 Brimar "London Label" 1960s Preamp Tube Valve

$48.4 $29.04

Tube Preamplifier Bluetooth 5.0 USB Tube Headphone Amplifier+6K4 Electron Tubes

$64.81 $38.89

PRT13A-BAL Remote Version Stereo Balance Tube Preamplifier Vacuum Tube Preamp

$288.64 $173.19

Nobsound T7 7-Band Equalizer Balanced XLR/RCA RCA Preamp for Home Amplifier Smal

$93.28 $55.97

Electro-Harmonix 6AQ8 EH Preamp Vacuum Tube

$41.32 $24.79

12AU7 / ECC82 Preamp Vacuum Tube

$27.18 $16.31

FISHER PR-66 STEREO PHONO PREAMPLIFIER, EXTREMELY RARE, DEAD STOCK UNTOUCHED

$374.0 $224.4

8463 Amperex NOS NIB Audio Receiver Pre-Amp Vacuum Tubes Pair

$22.0 $13.2

Groove Tubes GT-12AT7 S Select (Single) Preamp Tube

$26.4 $15.84

Vintage CBS 12AU7/ECC82/5814 Preamp Vacuum Tube Valve- Bangybang.tube

$36.96 $22.18

YAQIN MC-10T Desktop EL34 Vacuum Tube Amplifier Hifi Tube Amp with 12AX7 Pre-amp

$747.58 $448.55

SOVTEK JJ Electronics ECC83-S Vacuum Tube Tesla 12AX7 ECC83-S Vacuum Tube 1

$22.0 $13.2

Ayon Audio Eris Tube/Valve Preamplifier

$2640.0 $1584.0

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

$66.61 $39.97

GE 6SN7GTA Vintage NOS NIB Audio Electron Vacuum Tube Preamp Amplifier Amp Radio

$33.0 $19.8

GE / Hammond 6SN7GTB Vintage Preamp Vacuum Tubes Matched Pair Tested USA

$34.32 $20.6

RTF (Funkwerk) ECC82 / 12AU7 NOS East German Vacuum Tubes

$57.2 $34.32

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

$66.74 $40.05

1 Dynakit PAS2 Preamp-stereo tube preamp

$374.0 $224.4

RCA 12AU7A Preamp Tube ** 4 PIECES ** #3

$39.6 $23.76

Warm Audio WA-MPX 1-channel Tube Mic/Line/Instrument Preamp

$593.21 $355.93

6J1 Valve Preamp, Vacuum Electrom Tube Preamp Valve Preamp Amplifier Board Au...

$22.13 $13.28

JJ 12AX7 / ECC83 Preamp Vacuum Tubes (Three Pack)

$50.84 $30.51

Brand New In Box Current Matched Octet (8) Electro-Harmonix KT88 Vacuum Tubes

$533.65 $320.19

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

$410.47 $246.29