guitar tube pre amp for under $300

5-Watt 1x8 Guitar Combo Tube Amplifier with Celestion Speaker, 12AX7 Preamp

$114.99
Rocktron Valvesonic Black Plate Tube Guitar Preamp Blackface

$299
Rocktron Gainiac Tube Series Guitar Pre Amplifier Rare Vintage

$199.99

Vox AV60 modeling hybrid guitar amp, tube pre

$250
Peavey Piranha 6505 Guitar Amplifier Head Tube Preamp, Tested, Plays Well!

$92.01
DV Mark DV Micro 50 CMT! Ciro Manna 50 Watt Tube Preamp Guitar Amp Head!Markbass

$279.99
Rocktron Gainiac Tube Series Guitar Pre Amplifier Rare Vintage

$230
VOX MV50 Clean 50-Watt Hybrid Tube Guitar Amplifier Amp Head w/ Nutube Preamp

$219.99
5C3 Tweed Deluxe Chrome Plated Steel Chassis Octal Preamp DIY Guitar Tube Amp

$51.99
Vox MV50 Clean 50-Watt Hybrid Tube Guitar Amplifier Amp Head w/ Nutube Preamp

$219.99
Guitar/Microphone 12AX7 TUBE Preamp - WARM, CLEAN - 55 db Gain - Great Sound!

$198
Rocktron Gainiac Tube Series Guitar Pre Amplifier Rare Vintage

$215
Vintage Victor projector amplifier guitar tube amp project chassis 5879 pre

$225
Tube guitar preamp MAJESTIC based on JTM45

$235
Rocktron Voodu Valve Tube Guitar Preamp Multi Effects Processor USA made

$285
LANEY IRT-Pulse Iron Heart Tube Pre-Amp & USB Guitar Audio Recording Interface

$238
ALBIT BASS PRE AMP A2BP pro 12AX7 TUBE PREAMP MIJ Bass Guitar Effect DI Pedal

$279.99
Tube guitar floor preamp Recto

$235
Tube guitar preamp based on SLO

$235
Vtg Tube Amp w/ Speaker ZENITH Guitar Amp Tone Volume Pre-amplifier Power WORKS

$149
(2) Genuine Fender Guitar Amplifier Amp Preamp Tube Shields 099-0723-000

$9.25
812A Vacuum Tube Guitar Pre-Amp Tube High Power Audio Equipment Accessories

$32.33
6146B Vacuum Tube Guitar Pre-Amp Electric Tube High Power Audio Equipment

$40.67
Tube guitar preamp based on SLO - revision 2.0

$280
Orange Micro Dark 20W Guitar Tube Preamp w/ Cabinet

$260.03
1962 Fender Deluxe Pre-CBS Brownface Vintage Tube Guitar Amp 1x12 w Oxford 12K5

$1.11
Mini Bluetooth Electric Bass Guitar Amplifier Tube Preamp AMP Speaker 20W Music

$212.99
JOYO BlueJay BantamP Compact 20-Watt Guitar Amp Head w/ 1x 12AX7 Preamp Tube

$149.99
Mesa/Boogie 12AX7 Replacement Guitar Amplifier Preamp Tube (Individual)

$20.99
JJ Tesla 12AX7 Vacuum Tube MATCHED PAIR Electric Guitar Amplifier ECC83 Preamp

$24.95
Mesa/Boogie SPAX7 Replacement Guitar Amplifier Preamp Tube (Individual)

$23.99
JJ Tesla 12AX7 Vacuum Tube Electric Guitar Amplifier ECC83 Preamp

$12.95
Tube Set for Rivera TBR-4 Preamp- electric guitar amp TUBE AMP DOCTOR valves

$187.95
Peavey Super T Preamp Tube (12AT7 / STR-389 tube) Guitar Amplifier Parts

$16.99
LR Baggs Para DI Acoustic Guitar Direct Box EQ Preamp

$199
Mesa/Boogie SPAX7 Replacement Guitar Amplifier Preamp Tube (Individual)

$23.99
LR Baggs PARA Acoustic DI 5-Band EQ Aoucstic Guitar Preamp Direct Box

$199
L.R. Baggs Para Acoustic DI - Guitar Preamp and Direct Box

$189.99
LR Baggs Para Acoustic DI Guitar Preamp, 5 Band EQ, XLR Out, Phantom Power NEW!

$199
LR Baggs Para Acoustic Guitar DI and Preamp

$199
Peavey Super 7's 12AX7 Preamp Guitar Amplifier Tubes

$35.35
LR Baggs Para DI Acoustic Guitar Preamp / DI with 5-band EQ

$199
5C5 Tweed Pro Chrome Plated Steel Chassis Octal Preamp DIY Guitar Tube Amplifier

$55.89
Vintage PIAA TubeHead 2 Tube Guitar Preamp Kit (UNASSEMBLED)

$169
Fender MTG Tube Distortion Guitar Effects Pedal w/ 6205 Preamp Tube

$199.99
AMT Electronics SS-20 Tube Guitar Preamp 3-CHANNEL Pedal Distortion

$290
AMT Electronics Bricks R/S-Lead (Mesa/Soldano)- 1 channel tube guitar preamp

$195
Yerasov TM-1 Tube Monster Guitar Preamp w/ 12AX7

$70
AMT NEW Bricks M-Lead (Marshall JCM800 Emulates) - 1 channel tube guitar preamp

$180
Two Notes Audio Engineering Le Lead 2-Channel Guitar Tube Preamp and Overdrive

$294.99
AMT Electronics Bricks Vx-Clean (VOX AC30) - 1 channel tube guitar preamp

$195
AMT Electronics Bricks D-Lead (Diezel)- 1 channel tube guitar preamp

$195
AMT Electronics SS-11 3-Channel Dual Tube Guitar Preamp

$199
ART MP STUDIO TUBE MICROPHONE PREAMPLIFIER INSTRUMENT GUITAR 12AX7 P48 CONDENSER

$65
AMT Electronics Bricks F-Clean (Fender Twin)- 1 channel tube guitar preamp

$195
Used! MESA BOOGIE V-1 Bottle Rocket Tube Preamp Distortion Guitar Effects Pedal

$249.99
Used! MESA BOOGIE V-1 Bottle Rocket Tube Preamp Distortion Guitar Effects Pedal

$249.99
AMT Electronics Bricks B-Lead (Bogner)- 1 channel tube guitar preamp

$195
AMT Electronics SS-20 Tube Guitar Preamp Pedal Distortion

$290
AMT Electronics Bricks Vt-Lead (VHT)- 1 channel tube guitar preamp

$195
AMT NEW Bricks R/S-Lead (Mesa/Soldano Emulates) - 1 channel tube guitar preamp

$185
Fender Guitar Amp Tube Shields Amplifiers 099-0723-000 Preamp Tube Shield

$10.85
EHX Electro-Harmonix English Muff'n Tube Distortion/Preamp Guitar Effects Pedal

$190
HUK-TM2 Hughes & Kettner tube preamp TUBEMAN Guitar Effects from JAPAN

$246
AMT Electronics Bricks M-Lead (Marshall)- 1 channel tube guitar preamp

$195
Hughes Kettner tubeman tube Guitar preamp in excellent condition

$200
AMT Bricks Series Vt-Lead-1 Channel Tube Guitar Preamplifier Effects Pedal

$199.99
Takamine Cooltube CTP-1 Tube Acoustic Guitar Onboard Preamp

$229
Amptata 6V6 Replace EL84 6P14 6BQ5 Vacuum Tube Converter Adapter Pre Amp Guitar

$16.97
Takamine CTP-3 Cool Tube Guitar Preamplifier

$299.99
GROOVE TUBE GT-12AX7 PREAMP TUBE - EXCELLENT SHAPE - guitar amplifier valve

$9.99
Four Vacuum Tubes Guitar Amp 12AX7 Preamp EL84 Power New NR

$25
RCA 1965 ALLIED TUBE GUITAR AMPLIFIER AMP PREAMP SCHEMATIC REFERENCE HAND MANUAL

$19.99
Frog Tube Preamp 2.1 Version B PCB for DIY -Alembic F2b style

$9
TUBE-PRE Single Channel TUBE mic and guitar-preamplifier w/ VU Meter

$64.99
12AX7 CBS Audio Receiver Guitar Pre-amplifier Vacuum Tubes Tested Pair

$25.99
CBS 5879 PRE AMP TUBE-NIB/NOS-USED IN EARLY GIBSON GUITAR AMPS-RARE VINTAGE

$50
MARSHALL ECC83 PREAMP TUBE - EXCELLENT SHAPE - guitar amplifier valve

$9.99
Amptata 6SN7 6SL7 To ECC83 82 81 12AX7 U7 12AT7 Tube Converter Pre Amp Guitar 6V

$16.95
6CG7 GE Guitar Audio Guitar Preamplifier Vacuum Tubes Tested Pair

$21.99
Yerasov PD-5 PteroDriver Ptero Driver 2-Channel Dual Tube Guitar Preamp w/ 12AX7

$160
4.7K 4700 OHM 2 WATT QTY-2 ALLEN BRADLEY 20% TUBE GUITAR AMP PREAMP RESISTORS

$1.99
Albit A3GP 3ch Tube guitar Pre-Amp Effectors Shipped from Japan

$273
NEW JJ Tesla 12AX7 ECC83S Preamp Tube Guitar Amp Amplifiier

$17.48
3 Pack JJ Tesla 12AX7 Vacuum Tube MATCHED TRIO Guitar Amplifier ECC83 Preamp

$33.95
6SL7GT RCA Audio Receiver Guitar Pre-Amplifier Vacuum Tubes Tested Pair

$24.99
Tube Guitar preamp Rocker

$235
Yerasov PD-5 PteroDriver Ptero Driver 2-Channel Dual Tube Guitar Preamp w/ 12AX7

$160
Amptata 6SN7 L7 To ECC83 82 81 12AX7 U7 T7 Vacuum Tube Adapter Pre Amp Guitar 6V

$16.98
Hammond AO 41 Tube Pre Amp for True Pitch Shifting Vibrato Chorus Guitar Effect

$79.95
Takamine Cool Tube Preamp acoustic electric guitar 2005 ad 8 x 11 advertisement

$4.46
AC Adapter For JOYO Bantamp Zombie 20 Watt Guitar Amplifier Mini Tube Amp Head

$29.99
Tube line preamplifier for Guitar - Bass, premium handmade

$210
812A Vacuum Tube Guitar Pre-Amp Amplifier Tube Audio Equipment Accessory

$35.14
Hafler T2 Multi Tube Guitar Preamp

$230
Amptata 5Z3 274A 80 To 5U4G GZ34 274B 5Y3 5AR4 Tube Adapter Pre Amp Guitar HIFI

$6.94
812A Vacuum Tube Guitar Pre-Amp Vacuum Tube, Guitar Amplifier Tubes, Hifi Audio

$34.12
NEW JJ Tesla 12AX7 ECC83S Preamp Tubes x3 Guitar Amp Amplifiier

$48.88
Guitar Amplifier Preamp Tube Socket 9 Pin Ceramic for Marshall Fender w/ Shield

$7.99
Amptata 6SN7 L7 To ECC83 12AX7 12AU7 Vacuum Tube Adapter Pre Amp Guitar 12.6V

$17.97