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GURUS S.r.l. Via Vittori, 181 – 48018 Faenza (RA) Italy

Tel/Fax +39 0546 620387 – Internet: www.gurusamps.com – Mail: sales@gurusamps.it

WORLDWIDE DISTRIBUTION BY:

USER’S MANUAL

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2) INDEX

3) INTRODUCTION

4) INTRODUCTION

5) WARNINGS

6) TUBES LAYOUT, ABOUT TUBES

7) TUBES REPLACEMENT

8) FRONT PANEL ABOUT “iChannel”

9) REAR PANEL

10) TECHNICAL SPECIFICATIONS 11) BLOCK DIAGRAM

12) FOOTSWITCH WIRING, TUBES GUIDE

13) CUSTOMIZE YOUR SOUND

14) CONNECTIONS

15) FILTER DIAGRAM

16) WARRANTY CONDITIONS

Index

" A r t a n d t e c h n o l o g y c a n g o h a n d i n hand" (L.DaVinci) Inspired by the famous maxim of the Italian genius, Gurus Amps not only compromises the realization of his amps, choosing the best materials and technology available, but also by an excellent design, functionality and the image of its products. Gurus TRITONE is inspired by the design of some Italian icons from the world of racing have made unique the "Italian way" combining art and technology. "Gurus is not just a brand, it is a project, an idea, a vision precisely. We can not think about the future without remembering what was our past. "

We believe that the headlong rush to the Far East to reduce costs, is in its descending phase, which has already shown all its limitations, economic, social, environmental and functional first. We were born as a small company that built the best that technology had to offer, always looking for the best materials, the best components, to achieve something that was going to fill the gap that formed between what the market had to offer and what it represented the real needs of musicians. It’s by the close contact with guitar players at all levels, the size of "custom shop" ready to take new needs, criticisms, suggestions, which over the years has allowed us to create innovative products. We were the first in the world to make a mini head, low watt, that offered the great amps sound even at low volumes, taking advantage of the purity of Class A amplifier, at a time when all our competitors proposed big power heads. Today all the major manufacturers of amplifiers have a low watt mini-head in its catalogue. We were the first in the world to make a fully analogue tube amplifier, totally programmable. Today many are also along this path.

Introduction

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TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THIS COVER

DO NOT USE ANY TOOLS INSIDE REFER TO QUALIFIED SERVICE PERSONNEL

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT

TO RAIN OR MOISTURE

BE SURE THAT THE ELECTRIC NETWORK POWER SUPPLY VOLTAGE IS THE SAME INDICATED ON rear PANEL OF YOUR TRITONE HEAD.

TURN ON THE AMP BY THE POWER SWITCH AND WAIT 30 SECONDS TO GIVE TIME TO WARM UP TUBES.

CHECK THE CORRECT CONNECTION OF THE EXTERNAL DEVICES (IF USED)

GUITAR-AMP CONNECTION BY PLUG GUITAR CABLE INTO THE ”INSTRUMENT” JACK SOCKET

GURUS TRITONE HEAD is an Italian hand-built tube guitar amplifier undergoing to strict control methods, able to guarantee a lifetime use; in case of technical problems, do not try to repair the amp by yourself. Inside the equipment there are dangerous areas with hi-current and hi-voltage. The product servicing must be carried out by specialized technicians and authorized by Gurus Amps. Inside the equipment there are no parts for which the adjustment is at user’s care.

Be sure to have correctly carried out all the connections and to have read this simple and swift instruction manual, before contacting the technical service.

RISK OF ELECTRIC SHOCK DO NOT OPEN

WARNING

Using rules

With Gurus we also wanted to continue in the path of innovation, giving meaning to our mile stones of the past to create something modern that still had not been done yet. Thus was born iChannel. Gurus Amps are designed to provide the best possible interface to your favorites external digital devices, as smartphones, tablets, personal computers, multi-effects pedals. iChannel receives the signal from an external pre or a multi-effect and combines it with an ultralinear Hi-end Power section able to convey all the nuances of emulation software in use, thus maximizing the effectiveness of amp modeling, effects, etc. ...

With Gurus we wanted to implement these ideas, and to do that we have formed a team. Young designers, engineers, graphic designers, commercial. Combining skills and passions of each to create something unique, new, 100% Italian. Philosophy "no compromise", return to the absolute highest quality, from design to construction, the finest materials available, the best available technology to achieve a target of quality really challenging.

All This is our beliefs. All this is Gurus Amps.

Introduction Warning !!

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V1 12AX7/ECC83 (HI GRADE) V2 12AX7/ECC83 (HI GRADE) V3 12AX7/ECC83 (BALANCED TRIODES) V4 12AX7/ECC83 (BALANCED TRIODES) V5 12AX7/ECC83 (BALANCED TRIODES) V6 EL34B/6CA7 V7 EL34B/6CA7

The output power stage is near to 460 Volt. Requires the use of suitable valves to withstand voltages of these kind.

TUBES POSITION: Front view, from Right to Left V1-V7

About TubesAs the Gurus TRITONE operates in two differents power Class configuration, it is needed to set both the BIAS when swapping power tubes, so it is strictly recommended to be done by a technician.

The most common signs of run-down tubes could be: excessive noise, hi microphonic, power loss, loss of high frequencies, bad bottom end or/and uncontrolled changes of the output volume.

Tubes Live is estimated to 3000 hours. This depends by tube production quality.

Tubes Replacement

Gurus Tritone has been designed using a chassis made of Aeronautical Aluminum to reduce weight and assure the bes performances of mechanical strenght. Also Weights distribution has been studied and the handle position has been choose for the best comfort handling it.

Design

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Front Panel

1) Holiday/Rocking : amplifier turning on/off 2) Waiting/Playing : Stand by. 3) Class: 30W Class A - 60W Class Ab1 4) Presence: Presence control 5) Master: Amp volume level 6) SexyTone: Fine adjust of EQ Curve 7) Ch1/2 Volume: Volume for Ch.1/2 8) Gain: Gain for Ch.3/4 9) Volume: Volume for Ch. 3/4

NB: Hold Switch 18, 19,20 for two second to Mute the Amp, or entering in iChannel mode.

MIDI PRESETS STORAGE:

With a midi pedalboard connected (Transmission channel settled as Omnimode) - select a preset - then select a channel pressing 1 or 2 times the Ch. Switch (18.19.20) - now save it pressing the Store switch (17). All preset are rewritable, don’t need to clean memory.

iChannel™ offer the opportunity to receive and fit analog or digital external preamplifiers. The high quality of input and output buffers ensure tone with unexpected dynamic.

Tritone opens a new world, offering the right interface to use the best software designed for guitar sounds usable with: smartphone, tablet, DAW.

Some example: Guitar > iChannel input Fx Loop Send > Input1 Audio Interface (or an external guitar processor, modeler, profiler, etc..) Out Audio Interface > Fx Loop Return Cab Mic > Input 2 Audio Interface Then you can record a Clean Track from input 1 and and another track from input 2 with your favorite plugins. And you can use Tritone as a re-amping machine with incredible dynamic and results!

Go to “Connections” chapter to see how to connect and use iChannel

About iChannel

10) Gain: Gain for Ch. 5/6 11) Volume: Volume for Ch. 5/6 12) Bass: Bass For Chs. 3-4-5-6 13) Middle: Middle for Chs. 3-4-5-6 14) Treble: Treble for Chs. 3-4-5-6 15) iChannel: input for iChannel use 16) Normal: MAIN input for normal use 17) Store: Press for save presets via midi* 18) Clean/Britght Switch ch.1/2 19) Sexy/Crunch Switch ch. 3/4 20) Lead1/Lead2 Switch ch. 5/6

1 2 3 5 6 7 84 9 10 11 1312 14 15 16

17 18 19 20

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Rear Panel

1) Midi Thru: Midi out connection 2) Midi IN: Midi Main input 3) Remote Out: Ch. 5/6 (momentary) 4) Remote Out: Ch. 3/4 (momentary) 5) Remote Out: Ch. 1/2 (momentary) 6) Fx Loop mode: Series/Parallel (50%) 7) Return: Power In 8) Send: Preamp Out 9) Fx Loop level: Hi/lo Z

Technical Specs.

10) Speaker 16Ohm: 16Ohm Speaker: mono jack for connecting cabinet with the same impedance

11) Speaker 8Ohm: mono j ack f o r c o n n e c t i n g c a b i n e t w i t h s a m e impedance. If you wish to connect two paral lel cabinet 16Ohm the total impedance is considered 8Ohm.

12) Speaker 4Ohm: mono socket for connecting the cabinet with the same impedance. If you wish to connect two para l le l cab inet 8Ohm the to ta l impedance is considered 4Ohm.

13) Mains Input: socket for connection to the mains power, the plug contains a slot for the fuse of power supply circuit. In case of failure of a fuse, replace only with same specs fuses.

1 2 3 4 5

6

7 8

9

10 11 12 13

MAIN INPUT 117/230V - 50/60Hz MAIN INPUT POWER 192WMAIN FUSE T3,15A(slo blo) for 117V

T2A (slo blo) for 230V

internal HT fuse T1ATUBES CHART: 5x12AX7B Gurus

2x EL34B/5881 Gurus

OUTPUT POWER 30/50W @4/8/16 OhmAmp Class Push-Pull A Class

Push-Pull Ab1 Class

Instrument Input Max 250mV - Z <1M OhmiChannel Input Max 250mV - Z <1M Ohm

Channels:Clean Ch1 max 12db GainBright Clean Ch2 max 14db GainSexy Ch3 max 42db GainCrunch Ch4 max 68db GainLead1 Ch5 max 120db GainLead2 Ch6 max 160db Gain

Sexytone High pass Filter from 1500 Hz onwards

Tone Stack Bass 110Hz.Middle 780Hz.Treble 2300Hz.

Presence High pass filter from 4000Hz onwards

Send Level Max 1 Vpp Out (Hi mode) Z Out <100KOhmMax 0,5Vpp Out (Lo mode)Z Out < 10KOhm

Return Level Max 1,5Vpp IN Z In <100KOhm

Midi Settings Omnimode OutMidi Funtcions Channel 1 to 6

MutePreset Store

Midi Phantom Power 9VDC out Max 500mA

Dimensions: 540x240x200mm.Weight: 14,6Kgs.

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Block Diagram

Analog Footswiches wiringTritone can be managed by a standard Midi controller or via Analog Switching Systems. Just connect 3 standard Jack/Jack cables to have full control of all 6 Channels of Tritone, according to following schematics. Be sure your Switching device supports Momentary mode.

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ConnectionsRig 1

- Guitar in NORMAL input - MultiFx unit in Fx Loop - Cabinet - Midi pedalboard

This is the classic way to use a Head, connected with one or more cabinets, (checking impedance) And using a Midi Controller to handle the 6 Channels of Tritone (phantom powered), coupled with your favorite FX units connected in the FX Loop. Set the FX unit or the Tritone’s loop Switch for better fit the level: hi or Lo Z impedance (Hi for pedals, most of rack units, basically all operates at “Line” level)

Rig 2 - Guitar in iChannel Input - DAW in the iChannel Loop

(hi/low Z selected if not LINE level) - Cabinet - Midi Pedalboard

The iChannel input, let you interface your Tritone with other external processor, like a Smartphone, Tablet, DAW or everything else can emulate amp and Fx, without needing any interfaces. Just connect it to the iChannel loop (the Fx loop, setting the Switch on Low Z for example with a Tablet). So: Guitar>iChannel input Tritone Send>input of device (or audio interface) Output of Device> Tritone Return Now the guitar signal is treated by software, using the Tritone as a re-amping machine, and let you use your favorite emulator, respecting all the nuance of the software thanks to its very linear power section, adding warm and tube Dynamic.

Rig 3 - Guitar in NORMAL input - Pedals in Fx loop (HI Z selected) - Analog switching connected - Cabinet

This example shows how to use a Tritone with a complex pedalboard, using an Analog Switching system. With 3 mono jack cables you can handle all the 6 channels of Tritone. Pedals can be connected in front amp or in the loop as you prefer and managed by the same Looper/switcher.

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Filter Diagrams

SEXY TONE: It is a passive control that changes the EQ curve acting on the entire range of frequencies, is in fact easy to note that by acting on the amount of high, at the same time you have a shift in the shape of the medium and a sensitive intervention but very linear in the low, that are always rounded and focused The advantages of this kind of control, are to merge into a practical single potentiometer a true multi-band filter, able to respond to requests that our ear tells us, without ever

TONE STACK: A Traditional Bass, Middle, Treble tone stack is dedicated to dirty channels: 3-4-5-6 In the diagram, you can see how effective the controls are.

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Gurus product warranty covers 2 years from date of purchase with the exception of moving mechanical parts such as foot switches, speakers and handles which have a 1 year warranty. The valves, lights and cables are guaranteed for 3 months from the date of purchase. The warranty does not cover damage caused by accident, misuse and / or neglect, failure to comply with the instruction manual, repair and attempted repair by personnel not authorized by Gurus Amps, any damage caused during transport and delivery, (claims must be presented to the carrier); damage to any product that has been altered or on which it has been removed, defaced or altered serial number; damage caused by faulty connections or connections to equipment failures and/or defective power cables. Responsibility of Gurus Amps for any defective product is limited to repair or replacement of the product at our discretion. The Gurus Amps not be liable for damages resulting from loss of use of the product, lost time operation interrupted by non-use of the product, loss of business or any other damages or incidental, consequential or otherwise; damage in transit or damage caused by inadequate packaging or of poor quality.

Assistance: Please contact us for information on how, where and when to ship the product. The repaired goods will be packed carefully and we recommend not include any accessories such as cables, effects, manuals, etc. .. Please attach a copy of the original receipt of purchase (invoice or receipt) together with a problem description and your personal data.

THE WARRANTY IS NOT VALID 'WITHOUT A COPY OF YOUR RECEIPT OF SALE CERTIFYING THAT THE DATE OF PURCHASE. The costs of labor and material guarantee shall be at Gurus Amps charge, not Shipment costs.

Terms of Warranty

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Note

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Gurus Amps reserves the right to change technical features or look of his products in any moment without notice.This product is pursuant to European Directives 89/336EEC