Guitar Modeling

Why not the sound coming from my guitar amp?
I bought a Behringer V-Tone Modeling Guitar Combo Amp 15W recently. When you turn it and play, no sound coming through the amplifier. However, plugging in the headphones, I can hear everything perfectly. Why I can not hear when headphones are not connected?
I'm not a rocket scientist but I think it works
Marshall JMD:1 Modeling Guitar amp
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Line 6 Variax 700 Modeling Guitar $500.00 |
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Digitech RP155 Modeling Guitar Processor-NEW IN BOX $99.99 |
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Vox Valvetronix+ VT120Plus Modeling Guitar Combo Amplifier – 120-Watt, 2×12″ $549.99 |
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Vox Valvetronix+ VT40 + Plus Modeling Guitar Combo Amplifier – 40-Watt, 1×10″ $249.99 |
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Vox Valvetronix+ VT80 + Plus Modeling Guitar Combo Amplifier – 80-Watt, 1×12″ $399.99 |
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Fender Mustang MINI Amp – Portable AC/Battery Powered Modeling Guitar Amp, NEW! $129.99 |
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Vox VT20+ Modeling Electric Guitar Amplifier Mint! $115.00 |
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Vox VT40+ Valvetronix Modeling Guitar Amplifier Mint! $149.99 |
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DigiTech RP50 Digital Amp Modeling Guitar Effect Unit $22.00 |
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Digitech RP355 Guitar Modeling Processor with Cubase LE 4 Software Included $159.95 |
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LINE 6 VARIAX 300 ACOUSTIC MODELING GUITAR $275.00 |
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KORG AX3B TONE WORKS MODELING PROCESSOR Bass GUITAR FX PEDAL Multi Effector $99.99 |
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KORG AX3G TONE WORKS MODELING PROCESSOR GUITAR FX PEDAL Multi Effector $99.99 |
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Peavey Vypyr 30 Modeling Guitar Combo Amp $199.99 |
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Line 6 JTV-69 Modeling Electric Guitar Black Variax New $1,399.99 |
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Line 6 JTV-89 Modeling Electric Guitar Variax Black NEW $1,299.99 |
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Line 6 Pod HD Pro Rack Mount Guitar Multi-Effects Processor NEW Modeling Effects $679.99 |
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New Line 6 Spider IV 30 30-watt 1×12 Modeling Guitar Amplifier $165.00 |
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Peavey Vypyr 30 12″ Modeling Electric Guitar Amplifier w/Monster MRock 12′ Cable $199.99 |
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Peavey Vypyr 30 12″ 30-Watt Modeling Electric Guitar Amplifier $199.99 |
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Vox Valvetronix+ VT80 – Modeling Guitar Amplifier, NEW! $399.99 |
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Vox Valvetronix+ VT40+ – Modeling Guitar Amplifier, NEW! $249.99 |
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Peavey Vypyr 15 8″ 15-Watt Modeling Electric Guitar Amplifier $89.00 |
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Fender Mustang 2 Modeling Guitar Combo Amplifier $199.99 |
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VOX Valvetronix VT40+ 40W 1×10″ Modeling Guitar Amp – Black (Customer Return) $212.49 |
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Digitech RP70 Digital Multi Effects Modeling Foot Pedal Electric Guitar Amp Cab $79.95 |
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Digitech RP90 Digital Multi Effects Modeling Foot Pedal Electric Guitar Amp Cab $99.95 |
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Digitech RP155 Digital Multi Effects Modeling Foot Pedal Electric Guitar Amp USB $99.95 |
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LINE 6 VARIAX 700 MODELING ELECTRIC TREMOLO GUITAR IMMACULATE GOLD $900.00 |
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DigiTech RP50 Modeling Guitar Processor Multi-Effects Pedal *Brand New* $20.00 |
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Roland Micro Cube Black Electric Guitar Amplifier 6 DSP Effects Amp Modeling New $129.99 |
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MINT! ~ Behringer X V-Amp Guitar Amp Modeling Pedal ~ No Reserve! $0.99 |
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Line 6 JTV-89 Modeling Electric Guitar Variax Black NEW Free BackTrack + Mic $1,196.00 |
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Line 6 JTV-69 Modeling Variax Electric Guitar 3 Tone New Free BackTrack + Mic $1,289.00 |
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Line 6 JTV-69 Modeling Electric Guitar Black Variax New Free BackTrack + Mic $1,289.00 |
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Korg AX3000G Tonework guitar effect modeling signal processor/Great/Clean $180.00 |
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MINT Line 6 Variax Acoustic 700 Modeling Guitar Digital w/Adapter Gig Bag, Cable $897.00 |
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Peavey Vypyr 30 Modeling Guitar Amp $0.99 |
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Peavey Vypyr 100 Watt Electric Guitar Amplifier Digital Modeling Effect Amp $275.00 |
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Roland VG-99 Mult System Effects Modeling Processor System V-Guitar New $1,499.00 |
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2007 FENDER VG MODELING STRATOCASTER ROLAND ROSEWOOD FINGERBOARD GUITAR & CASE $1,495.00 |
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Behringer ULTRA ACOUSTIC MODELER AM400 Electric Acoustic Guitar Modeling pedal $47.95 |
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VOX MINI 3 – 3W Battery Modeling Guitar Amplifier IVORY $99.99 |
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DigiTech RP55 Guitar Effects Modeling Processor. $49.99 |
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Roland CUBE-15XL Guitar Amplifier 15 Amp Modeling XL $99.00 |
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Vox ToneLab EX Tube Guitar Modeling Effects Processor with Built-In Speakers $299.99 |
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Korg Toneworks AX10A Modeling Floor Effect Processor for Acoustic Guitar $49.99 |
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Fishman Aura Orchestra Body Acoustic Guitar Imaging / Modeling Pedal – Open Box $179.00 |
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KORG AX3G Guitar Compact Multi-Effects Modeling Signal Processor $49.99 |
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DigiTech RP250 Modeling Guitar Processor $17.50 |
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Ibanez MIMX65 Modeling Guitar Amp NEW/DEMO MODEL! FREE SHIPPING! $349.99 |
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IK Multimedia Amplitube 3 Full Version Guitar Amp Modeling VST AU RTAS – NEW $279.99 |
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DigiTech RP155 Guitar Modeling Processor Multi-Effect Pedal BRAND NEW IN BOX! $99.95 |
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MINT 2007 FENDER VG MODELING STRATOCASTER ROLAND GUITAR AND CASE STRAT $1,495.00 |
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Line 6 Variax 500 Modeling Guitar – USED IN GREAT CONDITION! $449.99 |
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Peavey Vypyr 15 8″ 15-Watt Modeling Electric Guitar Amplifier $20.00 |
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Fender Mustang II 2 40w Electric Guitar Combo Amp Amplifier Modeling Effects New $199.99 |
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Fender G-DEC 3 Thirty Electric Guitar Modeling Amplifier GDEC 30 Watt Amp New! $199.99 |
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Fender Mustang IV – 120W Modeling Guitar Amp, NEW! $499.99 |
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Zoom ZFX Guitar Modeling Software Stack Package $205.00 |
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Digitech Jimi Hendrix Experience modeling guitar pedal FUZZ WAH REVERB $149.99 |
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Line 6 POD 2.0 Electric Guitar Multi Effects Pedal Live Studio Modeling Pro New $199.99 |
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VOX Valvetronix VT20+ 20-Watt 1×8-Inch Modeling Guitar Amp – Black $169.99 |
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Vox VT40+ Valvetronix+ Modeling Guitar Combo Amp $114.50 |
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Nux DigiTech Digital LED Modeling Guitar Multi Effects Processor Pedal New $299.99 |
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LINE 6 AX-2 AX2 2 x 12″ GUITAR MODELING AMP MODELER AMPLIFIER NR ~ $99.00 |
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Line 6 Variax 300 Modeling Electric Guitar $249.99 |
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Boss PW-10 V-Wah Modeling OD Trem Vibro Guitar Pedal Effect Pedals Effects FX $65.00 |
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Digitech RP1000 Multi Effects Pedal | Electric Guitar Modeling Processor RP-1000 $399.95 |
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Digitech RP70 Multi Effects Guitar Pedal | Electric Guitar Modeling Stompbox $79.95 |
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Behringer AM400 Electric-to-Acoustic Guitar Modeling AM-400 $49.99 |
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DigiTech Modeling Guitar Processor $50.00 |
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New Behringer V-Tone GM108 Modeling Guitar Combo Amp *Authorized Dealer* $87.99 |
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Vox AV3B Toneworks Modeling Bass Guitar Processor Multi Effects $52.00 |
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Peavey VYPYR TUBE 120 Head Modeling Guitar Amplifier 120 watts w/FX $599.99 |
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DTAR Mama Bear MODELING Acoustic Guitar Preamp Module $349.00 |
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Roland VG-8 Guitar Modeling Processor $155.00 |
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Used Behringer X V-Amp Guitar Modeling Multi Effects Pedal IN BOX $65.00 |
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Digitech RP100 Modeling Multi-Effects Guitar Pedal + AC Adapter! NR! $19.95 |
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Digitech RP100 Modeling Multi-Effects Guitar Pedal + AC Adapter! NR! $29.00 |
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VOX Valvetronix VT40+ 40-Watt 1×10-Inch Modeling Guitar Amp – Black $249.99 |
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VOX Valvetronix VT40+ 40-Watt 1×10-Inch Modeling Guitar Amp Bundle – Black $249.99 |
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Digital LED MFX-10 Electric Multi-Effects Processor Guitar Modeling Processor $259.99 |
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AC Adapter For Digitech RP50 Modeling Guitar Processor Charger Power Supply Cord $9.50 |
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Vox Valvetronix+ VT20 Plus + Modeling Guitar Combo Amplifier – 20-Watt, 1×8″ $169.99 |
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peavey vyper 120 watt tube head modeling guitar amp $350.00 |
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2006 FENDER VG MODELING STRATOCASTER BLACK GUITAR WITH CASE STRAT $1,410.00 |
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KORG AX3G Guitar Compact Multi-Effects Modeling Signal Processor $40.00 |
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DigiTech RP-355 Modeling Guitar Processor $199.95 |
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Digitech RP 350 Modeling Guitar Processor $49.00 |
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LINE 6 FLEXTONE III 200 WATT STEREO GUITAR MODELING AMPLIFIER AMP $150.00 |
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Digitech RPX400 Multi Effects Modeling Guitar Processor USB Computer Interface $99.99 |
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Fender Mustang II – 40W Modeling Guitar Amplifier, NEW! $199.99 |
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Vox Valvetronix+ VT20 – Modeling Guitar Amplifier, NEW! $169.99 |
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Line 6 Flextone Duo 2×50w Modeling Guitar Combo $199.99 |
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Digitech RP1000 Guitar Modeling Effects Pedal NEW! $299.99 |
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Fender Mustang III – 100W Modeling Guitar Amplifier Amp, NEW! $299.99 |
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VOX VT120PLUS VT120+ VT120 120 WATT 120W 2X12 MODELING COMBO GUITAR AMP $549.99 |
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VOX VT80PLUS Modeling Guitar Amp $399.99 |
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VOX VT40PLUS Modeling Guitar Amp $249.99 |