User Manual

V-TONE GM108
True Analog Modeling 15-Watt Guitar Amp with 8" Speaker

Thank you

With the GM108 youve got your hands on a sizzling-hot guitar amp that will push your buttons in all the right places! Simply cool, simply amazing. Our one-of-a-kind V-TONE Analog Modeling gives you the hottest, most in guitar amp sounds on earth without placing unreasonable demands on the amount of background knowledge you need to have. TheV-TONEGM108 has everything you need to create exactly the sound you want right at your fingertips.

Table of Contents

Thank you... 1 Important Safety Instructions. 2 1. INTRODUCTION.. 3
1.1 Before you get started...3
2. WIRING HINTS... 3 3. CONTROL ELEMENTS... 5
3.1 Front panel....5. 3.2 Rear panel....6
4. BASIC SETTINGS.. 7 5. Audio CONNECTIONS... 8 6. SPECIFICATIONS.. 8 7. APPENDIX... 9 Warranty... 10 Legal Disclaimer.. 11
This manual is available in English, German, French, Spanish, Italian, Russian, Polish, Dutch, Finnish, Swedish, Danish, Portuguese, Greek, Japanese and Chinese. There may also be more current versions of this document. Download them by going to the appropriate product page at:

www.behringer.com

A50-22713-00003

ENGLISH

V-TONE GM108 User Manual
Important Safety Instructions
[6]. Clean only with dry cloth. [7]. not block any ventilation openings. Install in accordance Do
with the manufacturers instructions.
[8]. not install near any heat sources such as radiators, heat Do

* * ! ! ! !

registers, stoves, or other apparatus (including amplifiers) that produce heat.
[9]. not defeat the safety purpose of the polarized or Do
grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
Terminals marked with this symbol carry electrical current of sucient magnitude to constitute risk of electric shock. Use only high-quality commercially-available speaker cables with " TS plugs pre-installed. All other installation or modification should be performed only by qualified personnel.
{10} Place the power cord so that it is protected from being walked
on and sharp edges. Be sure that the power cord is protected particularly at plugs, convenience receptacles and the point where it exits from the apparatus.
This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure - voltage that may be sucient to constitute a risk of shock.
{11} apparatus shall be connected to a MAINS socket outlet The
with a protective earthing connection.
{12} Where the MAINS plug or an appliance coupler is used as
the disconnect device, the disconnect device shall remain readily operable.

This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. Please read the manual.
{13} use attachments/accessories specified by the Only

manufacturer.

{14} only with the cart, stand, tripod, bracket, Use

Caution

To reduce the risk of electric shock, do not remove the top cover (or the rear section). No user serviceable parts inside. Refer servicing to qualified personnel.
or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
{15} Unplug this apparatus during lightning
storms or when unused for long periods of time.
{16} Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
To reduce the risk of fire or electric shock, do not expose this appliance to rain and moisture. The apparatus shall not be exposed to dripping or splashing liquids and no objects filled with liquids, such as vases, shall be placed on the apparatus.
These service instructions are for use by qualified service personnel only. To reduce the risk of electric shock do not perform any servicing other than that contained in the operation instructions. Repairs have to be performed by qualified service personnel.
[1]. these instructions. Read [2]. Keep these instructions. [3]. Heed all warnings. [4]. Follow all instructions. [5]. not use this apparatus near water. Do

1. INTRODUCTION

Wanna change the sound of your amp in a second? Simply use one of the switches to select another amp or another speaker. And thats it! Combined with all the other settings that you can make, you can produce an entire array of different sounds. And all that without getting yelled at by the neighbors: just plug in your headphones and start playing! But beware: High-volume music can damage your hearing and/ or your headphones. Turn the MASTER control to zero (all the way to the left) before you power up your amp. Always try to play at appropriate volume levels. Absolute power and tube sound Protecting your hearing aside, if you crank up your V-TONE GM108, it can cause quite a stir in your practice room or even on the stage ;-). How your amp is wired is shown in figures 2.1 and 2.2. The GM108 with V-TONE Analog Modeling gives you a tube sound full of life that will simply blow you away. From crystalclear all the way to ultra-distorted, anything and everything is possible. In doing so, you remain in full control over the volume: you can create the same sound, regardless of whether you play at bedroom levels or if you play at full blast in your practice room. Jam! The V-TONE GM108 is simply an awesome practice amp because its CD input lets you jam to your favorite CDswithout upsetting your neighbors! If you want (or are told!) to keep it on the quiet side, all you need is some headphones. The BEHRINGER HPS3000, for example, is the perfect choice for exactly that! This one is for keeps! The electronic components of your V-TONE GM108 are well protected in its robust steel casing. The casing also has highquality, environment-friendly MDF wood that is covered with high-resistance leatherette. Your GM108 wont leave you stranded even during tough stage use. The purpose of this manual is to familiarize you with all the functions of your new amp so you put to good use all that the amp has to offer. After you have read it through, keep it somewhere where you can later find it. Its of no use to you when its lost ;-).

1.1 Before you get started
The GM108 was carefully packed at the factory to assure it will survive the rigors of the road. If the cardboard packaging looks like its been through a lot, please inspect the contents and look for indications of damage.In case your amp is damaged, DO NOT send it directly to us. Instead, first notify the store where you bought it as well as the carrier who made the delivery. Otherwise, you may void your warranty. Always make sure your V-TONE GM108 gets enough air flow and never put it near the heating or other heat-emitting equipment to avoid damage to the amp.

2. WIRING HINTS

The following illustrations show you how to connect your guitar to the amp. If you want to use stomp boxes or an effects pedal to experiment with different new sounds, simply connect the guitar directly to the input of your effects unit. Of course, you will need an additional cable for this purpose to connect the output of the effects unit to the amp input. If you own an electronic tuner, you should hook it up pre effects unit to avoid interference. Your amps speaker is automatically muted when you insert a plug into the headphone connector 10.
main outputs instrument input input output line input
(optional) electric guitar
Fig. 2.1: V-TONE GM108 setup (example)
CD input CD player instrument input output headphones output

electric guitar

BEHRINGER X V-AMP (optional)
Fig. 2.2: Live setup (example)
Fig. 2.2 shows how your GM108 can be connected to a sound reinforcement system. This way, your amp can hold its turf even when used for performing live or with a loud band.

3. CONTROL ELEMENTS

3.1 Front panel
Fig. 3.1: Front panel control elements
[1] Use the INST(RUMENT) INPUT connector to hook up your guitar. Use a standard " TS cable. [2]. DRIVE control regulates how much distortion you The produce (depending on what amp, mode and speaker combination you select). The DRIVE control works in unison with the MASTER control. To some extent, the DRIVE control also affects the volume. To achieve the same volume level, turning DRIVE down means you have to somewhat increase MASTER. The more you crank up DRIVE, the louder it will get, so that you can finally adjust the volume using MASTER. This way, you can greatly vary your sound and still be in charge of volume.

For guitar pros: You can use the volume control of your guitar as a creative tool as well. The more you turn it up, the more distortion you end up with!
[5]. the SPEAKER switch to adjust yet another parameter: Use select one of the three outstanding loudspeaker simulations that best fits the amp you go with.
UK: 4 x 12" speaker in an enclosed casing. US: 2 x 12" open-back speaker. FLAT: specially tailored for the GM108.
[6]. Hook up the output of your CD player, tape deck or walkman to the CD INPUT connector. An MD player will do too. This way, you can play music CDs or even CDs accompanying guitar-playing books and practice at the same time. Of course, you can do the same using your stereo, but then you couldnt hear both signals simultaneously via your headphones!
The CD INPUT comes as a standard " TRS stereo jack connector. If your CD player features RCA outputs, then youll need an adapter or an adapter cable. You can get both at most audio stores. Fig. 5.3 in chapter 5 shows you what such an adapter looks like. You can also use a mono cable (fig. 5.4) without damaging the amp or your CD player.
[3]. AMP switch lets you decide which one of the three The classically inspired guitar amp sounds you wish to recreate.
TWEED: Offers the legendary American clean sound, with dynamic bass and clear transparence. BRITISH: Aggressive in the mids, tough and full of punch, thats how you can describe this setting. You get the classic rock sound of the most famous British amps. CALIF(ORNIAN): Lead and hot rhythms sounds are what you get with this setting. This is the amp for that typical Nu Metal Californian sound.
[7]. Wanna have more bass? Then crank LOW all the way up. [8]. MID control is used to lower or increase mid The frequencies.
If you are playing alone, lower these frequencies relative to bass/highs to get a cool sound. When youre playing in a band, increase these frequencies relative to bass/highs to cut through. Just keep on tweaking your sound until you get it right!
[4]. the MODE switch to select one of the three settings Use (CLEAN, HI GAIN and HOT) for the basic sound you selected with the AMP switch. The following description gives you some rough idea about the many possibilities.

Experiment with DRIVE to come up with exactly the sound you are looking for! CLEAN: as the name says, clean sound, without distortion. HI GAIN: ranges from crunchy to strongly distorted sounds. HOT: heavily distorted sound with endless sustain and an extra dollop of presence.
[9]. HIGH control regulates high frequencies. Use HIGH The to get your guitar to sound sharper. [10] Hook up your headphones using the HEADPHONE connector. Your amps loudspeaker is automatically muted as soon as your headphones are connected.
Some headphones cant handle extremely high volumes without beginning to distort. Turn the LEVEL control somewhat down until you notice the distortion is gone.
[11] The MASTER control governs the overall volume of your V-TONE GM108. MASTER should always be at zero (all the way to the left) whenever you hit POWER or when you unplug the cable out of your guitar or your amp. Otherwise, loud crackling noise can occur, and they are good for neither your amp nor your ears. [12] Use POWER to power up your GM108. You should always make sure that the POWER switch is in the Off position when initially connecting the unit to the mains.
Please take note: Merely switching the unit off does not mean that it is fully disconnected from the mains. When not using the unit for prolonged periods of time, please unplug the units power cord from the power outlet.

3.2 Rear panel

[13] SERIAL NUMBER. Go to www.behringer.com and register your purchase online.
Fig. 3.2: GM108 rear panel

4. BASIC SETTINGS

The following four illustrations show you how you can setup your V-TONE GM108. These settings greatly differ from one another and let you fully exploit the sound diversity of your amp. That way, you have a solid foundation for working on developing your own, recognizable sound and tone.
This setting creates a clear sound that is ideal for finger picking. If you want to use stomp boxes, this setting will be very helpful: The unique sound of your effects will come through more strongly.
Fig. 4.2: Basic setting CLEAN 2
This is a great setting for playing country, jazz or blues. A hint: Using the pickup closest to the guitars neck lets you achieve a rich, clean sound. Try using two pickups at the same time. Youll create an open, bell-like sound.

Fig. 4.3: Basic setting CRUNCH
This setting is optimal for distorted rock guitar parts and power chords. To get a tighter sound, try using the pickups located farther away from the guitar neck.
Fig. 4.4: Basic setting LEAD
This hot lead guitar sound rocks! With the almost endless choice of different sounds you have at your fingertips, you will soon develop your own playing style and broaden the limits of your skills. This goes for all settings: What guitar you use with your V-TONE GM108 will also influence the overall sound of your playing. Thats why we can only give you hints that will make getting started easier. The bulk of the work lies in your hands. Most guitars sound at their best when volume and tone controls on the guitar are turned as far up as they go.
Experiment with all controls to get more experience and to figure out how to get the sound you like. When they find a setting they like, many experienced guitarist write down this setting to remember it for future use. On page 9 you will find amp illustrations in which you can enter your own favorite settings. A hint: Photocopy this page so you can keep on re-using it in the future!
CD input V-TONE GM108 CD player output

5. Audio CONNECTIONS

The guitar input of the BEHRINGER V-TONE GM108 comes as mono " TS connector. Please keep in mind that all equipment has to be grounded at all times. For your own protection, never change or disable the grounding on your equipment or on the cables you use!

sleeve tip

Fig. 5.4: Mono adapter cable

6. SPECIFICATIONS

AUDIO INPUTS
Guitar input Connector CD input Connector " TRS stereo connector " TS mono connector

AUDIO OUTPUTS

Fig. 5.1: Wiring of an unbalanced " TS connector for use with INSTRUMENT INPUT
Headphone output Connector " TRS stereo connector 15 Watts RMS into 4 Ohms 8" vintage design guitar speaker 4 Ohms 20 Watts

SYSTEM SPECIFICATIONS

Power amp output

LOUDSPEAKER

Type Impedance Power handling

POWER SUPPLY

Fig. 5.2: Wiring of a stereo headphones connector for use with CD INPUT

CD input V-TONE GM108

CD player outputs right channel
Mains voltage USA/Canada Europe/U.K./Australia Japan
120 V~, 60 Hz 230 V~, 50 Hz 100 V~, 50 - 60 Hz approx. 322 mm x 357 mm x 162 mm (12 11/16" x 14 1/16" x 6 3/8") approx. 5.15 kg (11 lbs. 3 oz.)

DIMENSIONS/WEIGHT

Dimmensions (H x W x D) Weight

left channel

right channel ring sleeve left channel tip sleeve tip tip sleeve
BEHRINGER is constantly striving to maintain the highest professional standards. As a result of these efforts, modifications may be made from time to time to existing products without prior notice. Specifications and appearance may differ from those listed or shown.
Fig. 5.3: Stereo adapter cable

7. APPENDIX

Notes:

Speaker

Master

Warranty

1 Warranty
[1]. limited warranty is valid only if you purchased the product from a BEHRINGER This [2] This limited warranty does not cover the product if it has been electronically or
authorized dealer in the country of purchase. A list of authorized dealers can be found on BEHRINGERs website www.behringer.com under Where to Buy, or you can contact the BEHRINGER oce closest to you.
[2] BEHRINGER* warrants the mechanical and electronic components of this product
to be free of defects in material and workmanship if used under normal operating conditions for a period of one (1) year from the original date of purchase (see the Limited Warranty terms in 4 below), unless a longer minimum warranty period is mandated by applicable local laws. If the product shows any defects within the specied warranty period and that defect is not excluded under 4, BEHRINGER shall, at its discretion, either replace or repair the product using suitable new or reconditioned product or parts. In case BEHRINGER decides to replace the entire product, this limited warranty shall apply to the replacement product for the remaining initial warranty period, i.e., one (1) year (or otherwise applicable minimum warranty period) from the date of purchase of the original product.
[3] Upon validation of the warranty claim, the repaired or replacement product will
mechanically modied in any way. If the product needs to be modied or adapted in order to comply with applicable technical or safety standards on a national or local level, in any country which is not the country for which the product was originally developed and manufactured, this modication/adaptation shall not be considered a defect in materials or workmanship. This limited warranty does not cover any such modication/adaptation, regardless of whether it was carried out properly or not. Under the terms of this limited warranty, BEHRINGER shall not be held responsible for any cost resulting from such a modication/adaptation.

[3] This limited warranty covers only the product hardware. It does not cover
technical assistance for hardware or software usage and it does not cover any software products whether or not contained in the product. Any such software is provided AS IS unless expressly provided for in any enclosed software limited warranty.
[4] This limited warranty is invalid if the factory-applied serial number has been
altered or removed from the product.
[5] Free inspections and maintenance/repair work are expressly excluded from this
be returned to the user freight prepaid by BEHRINGER.
[4] Warranty claims other than those indicated above are expressly excluded.
PLEASE RETAIN YOUR SALES RECEIPT. IT IS YOUR PROOF OF PURCHASE COVERING YOUR LIMITED WARRANTY. THIS LIMITED WARRANTY IS VOID WITHOUT SUCH PROOF OF PURCHASE.
limited warranty, in particular, if caused by improper handling of the product by the user. This also applies to defects caused by normal wear and tear, in particular, of faders, crossfaders, potentiometers, keys/buttons, tubes, guitar strings, illuminants and similar parts.
[6] Damage/defects caused by the following conditions are not covered by this

2 Online registration

Please do remember to register your new BEHRINGER equipment right after your purchase at www.behringer.com under Support and kindly read the terms and conditions of our limited warranty carefully. Registering your purchase and equipment with us helps us process your repair claims quicker and more eciently. Thank you for your cooperation!
limited warranty: improper handling, neglect or failure to operate the unit in compliance with the instructions given in BEHRINGER user or service manuals; connection or operation of the unit in any way that does not comply with the technical or safety regulations applicable in the country where the product is used; damage/defects caused by acts of God/Nature (accident, re, ood, etc) or any other condition that is beyond the control of BEHRINGER.
[7] Any repair or opening of the unit carried out by unauthorized personnel

3 Return authorization number
[1]. obtain warranty service, please contact the retailer from whom the equipment To
(user included) will void the limited warranty.
[8] If an inspection of the product by BEHRINGER shows that the defect in question is
was purchased. Should your BEHRINGER dealer not be located in your vicinity, you may contact the BEHRINGER distributor for your country listed under Support at www.behringer.com. If your country is not listed, please check if your problem can be dealt with by our Online Support which may also be found under Support at www.behringer.com. Alternatively, please submit an online warranty claim at www.behringer.com BEFORE returning the product. All inquiries must be accompanied by a description of the problem and the serial number of the product. After verifying the products warranty eligibility with the original sales receipt, BEHRINGER will then issue a Return Materials Authorization (RMA) number.
[2] Subsequently, the product must be returned in its original shipping carton,
not covered by the limited warranty, the inspection costs are payable by the customer.
[9] Products which do not meet the terms of this limited warranty will be repaired
exclusively at the buyers expense. BEHRINGER or its authorized service center will inform the buyer of any such circumstance. If the buyer fails to submit a written repair order within 6 weeks after notication, BEHRINGER will return the unit C.O.D. with a separate invoice for freight and packing. Such costs will also be invoiced separately when the buyer has sent in a written repair order.
[10 Authorized BEHRINGER dealers do not sell new products directly in online ]
together with the return authorization number to the address indicated by BEHRINGER.
[3] Shipments without freight prepaid will not be accepted.
auctions. Purchases made through an online auction are on a buyer beware basis. Online auction conrmations or sales receipts are not accepted for warranty verication and BEHRINGER will not repair or replace any product purchased through an online auction.

4 Warranty Exclusions

[1]. limited warranty does not cover consumable parts including, but not limited This
5 Warranty transferability
This limited warranty is extended exclusively to the original buyer (customer of authorized retail dealer) and is not transferable to anyone who may subsequently purchase this product. No other person (retail dealer, etc.) shall be entitled to give any warranty promise on behalf of BEHRINGER.
to, fuses and batteries. Where applicable, BEHRINGER warrants the valves or meters contained in the product to be free from defects in material and workmanship for a period of ninety (90) days from date of purchase.

Legal Disclaimer

6 Claim for damage
Subject only to the operation of mandatory applicable local laws, BEHRINGER shall have no liability to the buyer under this warranty for any consequential or indirect loss or damage of any kind. In no event shall the liability of BEHRINGER under this limited warranty exceed the invoiced value of the product.
Technical specifications and appearance are subject to change without notice. The information contained herein is correct at the time of printing. BEHRINGER accepts no liability for any loss which may be suffered by any person who relies either wholly or in part upon any description, photograph or statement contained herein. Colors and specifications may vary slightly from product. BEHRINGER products are sold through authorized dealers only. Distributors and dealers are not agents of BEHRINGER and have absolutely no authority to bind BEHRINGER by any express or implied undertaking or representation. This manual is copyrighted. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording of any kind, for any purpose, without the express written permission of Red Chip Company Ltd. ALL RIGHTS RESERVED. 2009 Red Chip Company Ltd. Trident Chambers, Wickhams Cay, P.O. Box 146, Road Town, Tortola, British Virgin Islands

7 Limitation of liability
This limited warranty is the complete and exclusive warranty between you and BEHRINGER. It supersedes all other written or oral communications related to this product. BEHRINGER provides no other warranties for this product.
8 Other warranty rights and national law
[1]. limited warranty does not exclude or limit the buyers statutory rights as a This

consumer in any way.

[2] The limited warranty regulations mentioned herein are applicable unless they
constitute an infringement of applicable mandatory local laws.
[3] This warranty does not detract from the sellers obligations in regard to any lack of
conformity of the product and any hidden defect.

9 Amendment

Warranty service conditions are subject to change without notice. For the latest warranty terms and conditions and additional information regarding BEHRINGERs limited warranty, please see complete details online at www.behringer.com.
* BEHRINGER Macao Commercial Offshore Limited of Rue de Pequim No. 202-A, Macau Finance Centre 9/J, Macau, including all BEHRINGER group companies
ENGLISH This manual is available in English, German, French, Spanish, Italian, Russian, Polish, Dutch, Finnish, Swedish, Danish, Portuguese, Greek, Japanese and Chinese. There may also be more current versions of this document. Download them by going to the appropriate product page at: