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Congratulations and thank you for 
purchasing a professional tube ampli-
fier from Bad Cat. As with all Bad Cat 
products, your amplifier is designed from 
the ground up to provide the very best 
tones possible in a rugged, reliable pack-
age. Each one of our pro quality models is 
constructed with Bad Cat’s commitment 
to making the highest quality, hand-built, 
American-made amplifiers.

Caution

With a little care and caution, your Bad 

Cat amplifier should provide you with 

years of trouble-free operation and 

enjoyment. Please avoid damp areas and 

moisture during operation of the amp 

and in storage. This includes placement 

of beverages near or on the amp that 

could spill into the amp’s chassis. Liquids 

can easily damage tubes, switches and 

other parts. Immediately disconnect the 

amp from power source should a spill 

occur and dry the amp thoroughly prior 

to switching on the amp again. Drying 

may require the complete removal of the 

chassis from the cabinet and the removal 

of the tubes for cleaning. Avoid tipping the 

amp, using it in unbalanced positions, or 

lifting it unassisted to awkward heights. A 

little common sense will go a long way in 

making sure the amp does what it’s sup-

posed to do: provide you with dependable 

operation and great tone on a consistent 

basis.

GroundinG

Please check thoroughly that the ground 

tip on the power cord plug is connected to 

true ground prior to operation of your Bad 

Cat amp. Using unfamiliar junction boxes 

can cause potentially dangerous floating 

grounds. Please do not cut or defeat the 

ground tip. 

For your reCords, you may wish to reCord the FollowinG inFormation.
serial no._____________________ invoiCe date______________________

Last updated: March 12, 2014  -  Rev. 08

limited liFetime warranty

Bad Cat Amplifiers has a limited lifetime warranty on select amps and cabs agains work-

manship or defect. The warranty excludes pedals, The Unleash and accessories. The war-

ranty does not cover tubes, speakers or cosmetic damage, wear and tear, or abuse. This 

warranty is transferable. Modifying or altering the amp in any way voids the warranty. 

Shipping to and from the warranty repair center is the responsibility of the customer.
We have a new Lifetime Warranty on all new amps leaving the factory. We are extending 

the Limited Lifetime Warranty to all of our pre-acquisition amps for $349. Simply send 

the unit back to us with an approved RMA number, and we will have one our technicians 

go through it from the ground up. Shipping to and from the warranty repair center is 

the responsibility of the customer. For more information please contact us at sales@

badcatamps.com or directly at 1-800-730-0966.
When returning merchandise to the factory, you must call for a return authorization num-

ber (RMA). Any items arriving without a proper RMA number will be rejected at customer’s 

expense. Bad Cat Amps may update its warranty from time to time. When we change 

the warranty in a material way a notice will be posted on our website along with the 

updated warranty.

imPortant!

FOR YOUR PROTECTION, PLEASE READ 

THE FOLLOWING:

WATER AND MOISTURE: Appliance should 

not be used near water (near a bathtub, 

washbowl, kitchen sink, laundry tub, in a 

wet basement, or near a swimming pool, 

etc). Care should be taken so that objects

do not fall and liquids are not spilled into 

the enclosure through openings.

POWER SOURCES: The appliance should 

be connected to a power supply only of 

the type described in the operating in-

structions or as marked on the unit.

GROUNDING OR POLARIZATION: Precau-

tions should be taken so that the ground-

ing or polarization means of an appliance 

is not defeated.

POWER CORD PROTECTION: Power sup-

ply cords should be routed so that they 

are not likely to be walked on or pinched 

by items placed upon or against them, 

paying particular attention to cords at 

plugs, convenience receptacles, and the 

point where they exit from the appliance.

SERVICING: The user should not attempt 

to service the unit beyond that described 

in the operating instructions. All other 

servicing should be referred to qualified 

service personnel.

FUSING: If your unit is equipped with a 

fuse receptacle, replace only with the 

same type fuse. Refer to replacement 

text on the unit for correct fuse type. 

          This symbol is intended to alert 

          the user to the presence of 

     uninsulated 

“dangerous 

voltage” within the product’s enclosure that 

may be of sufficient magnitude to constitute 

a risk of electric shock to persons.

This symbol is intended to 

alert the user to the presence 

of important operating and 

maintenance (servicing) instructions in the 

literature accompanying the appliance.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

reFer serviCinG to QualiFied serviCe Personnel!

this unit Contains hiGh voltaGe inside!

Phone 800.730.0966

Fax  714.630.0106  

inFo@badcatamPs.com

www.badcatamPs.com

140 technology drive suite 500, irvine ca 92618

bad cat holdings llc. Usa

operating manual

  Hot Cat series

Copyright ©2014 Bad Cat Holdings LLC. USA. All rights reserved.

Tube Chart

  hot CAt 15R

12AX7

12AX7

12AX7

EL84

12AX7

EL84

12AX7

12AX7

12AX7

gz34

Outside View (Tubes Up)

Input Jack

Back Panel

Choke

Reverb

Transformer

PO

w

ER

TRAnsfOR

m

ER

OUTPUT

TRAnsfOR

m

ER

x

x

Copyright ©2014 Bad Cat Holdings LLC. USA. All rights reserved.

Tube Chart

  hot CAt 30R

12AX7

12AX7

12AX7

12AX7

12AX7

12AX7

12AX7

Outside View (Tubes Up)

Input Jack

Back Panel

Choke

Reverb

Transformer

PO

we

R

TRAnsfORme

R

OUTPUT

TRAnsfORme

R

eL34

eL34

gz34

x

x

Copyright ©2014 Bad Cat Holdings LLC. USA. All rights reserved.

Tube Chart

  hot CAt 50R

12AX7

12AX7

12AX7

12AX7

12AX7

12AX7

12AX7

SS ReCT.

Outside View (Tubes Up)

Input Jack

Back Panel

Choke

Reverb

Transformer

PO

we

R

TRA

n

Sf

ORme

R

OUTPUT

TRA

n

Sf

ORme

R

eL34

eL34

x

x

TrOUbleShOOTINg

 

Your new Bad Cat amplifier is designed for many years of 

professional trouble free operation. Common sense will tell 

you that if you notice any severe abnormalities in operation 

like burning smell, smoke, etc.; you need to shut down the 

amp immediately. Always consult your Bad Cat dealer if you 

are unsure of the problems that you are dealing with; i.e., 

take your amp to where you purchased it.

helP SeCTION

Amp Will Not Turn On

Check the power to the amp. Check for tripped circuit break-

ers, unplugged extension cords or power-strip switches that 

may be turned off. Check the fuse. If a dark brownish color 

or no wire can be seen within the glass tube, then replace. 

The amp may be perfectly fine but occasionally a fuse may 

blow because of high AC voltage surges. After the fuse has 

been replaced with the proper Slow Blow value and if the 

fuse fails again, the amp will require servicing. 

Weak or No Output level 

 

Verify the signal output from your instrument first. Check 

guitar’s controls and that the cables are working properly. 

Also, check any effects pedals that may be connected in 

between the guitar and the amplifier.

No Output with Power light On

Tubes damaged in shipping will be the primary reason for 

your amp to not function properly. Please give us a call to 

help guide you through this simple repair.

Keep Your Amp looking New

Use a damp cloth to wipe the controls on the front & rear 

chassis panels. Wipe the black vinyl covering with a damp 

cloth.

Adverse Sounds-hum, Whistle, loss of Dynamics, 

Feedback, howling

 

Check loudspeaker cones, frayed guitar cables, controls on 

your instrument, the guitar’s pickups and any other devices 

that many be connected to your amplifier such as effects 

pedals or rack processors. Some of these devices are “am-

plifiers” in their own right with gain and boosted volume 

levels and they may cause hissing and unwanted  feedback 

if set too high in front of the amp. Shut down the amp and 

check the tubes. Wait for the amp to cool down. Remove 

the back panel of the amplifier. Avoid handling hot tubes 

as they can cause severe burns. Check the larger output 

power tubes first by carefully removing the tube shields 

or loosening the clamps, and then unseat the tubes from 

their sockets but note from which sockets you removed the 

tubes. Inspect the integrity of the filaments in the tubes. If 

one or more of these tubes are bad, you will need to replace 

the entire set of the power tubes. If all the tubes are OK, you 

can eliminate the adverse sounds by swapping the location 

of these tubes. If this fails to fix the problem, you may need 

to replace the entire set of power tubes with a new matched 

set. Use of inferior quality (unrated) tubes may cause dam-

age to your amplifier. You should also check the preamp 

tubes, especially the first input stage tube (far right if you’re 

looking at the amp from the back). Microphonics (feedback 

noise that cannot be controlled by turning down the volume 

pot on you guitar) indicates a bad preamp tube(s). You may 

want to swap the position of preamp tubes to see if this will 

fix the microphonics problem. Preamp tubes can go bad 

without warning but can also last many years without any 

problem whatsoever. 

As you can see when handling tubes, they are sensitive, fragile and somewhat 

prone to inconsistencies. Please handle your amp with care when transporting 

it. Although your Bad Cat amp is sturdily built and designed to take years of 

rugged use, the tubes are not. It’s always a good idea to keep extra tubes (both 

preamp and output power tubes) handy, especially for performance situations. 

An overwhelming majority of minor problems on tube amps are tube-related 

and it’s just a matter of swapping one or more out to have your amp performing 

like brand new again. 

led Channel indiCator

Bass and treBle Controls on the new hot Cat series Give you FlexiBle Clean Channel

simPliFied Gain Channel: Bass, mid, treBle tone staCks
seParate reverB Controls For eaCh Channel

15-watt

2-el84

Cathode Biased

2-Channel Foot switChaBle

halF Power switCh

A little over ten years ago Bad Cat created the worlds first Class A high gain amplifier. One decade, 

multiple editors pick awards and in 2004, Guitar Player Magazine recognized the amp with a 2nd 

place in the top ten best combo amps ever made! The honor was presented at the Summer NAMM 

Nashville show.

Bad Cat has once again defined and refined the best. We have taken the best clean channel in the 

business and expanded its capability. We have added a bass and treble control for added versatility. 

Along with the defeat-able master volume the clean channel can cover everything from sparkling 

pristine clean to the type of crunch found on 70’s vinyl.  

The Hot channel has been simplified in its controls and expanded in its capabilities. The controls 

have been simplified to gain, bass, mid, treble , master and now for the first time reverb. The gain 

structure has been reconfigured to begin with a bluesy smooth breakup and gradually roll into thick 

syrupy high gain. 

This amp covers everything from clean sparkle to harmonically rich saturation. 

available with or without reverb.

eleCtroniCs

Power

: 15 Watt Class A, 30 Watt Class A, 50 Watt Class A

Channels:

 Two

Controls

: CH. 1 -  Volume, Bass, Treble, In/Out, Master, Reverb, Presence

               CH. 2 -  Gain, Bass, Mid, Treble, Master, Reverb, Presence

hardware

Available Configuration

: Head Shell, 1x12 Combo 

Cabinet Material

: Head - Italian Poplar, Combos - 13 Ply Baltic Birch

Speaker Description

: Head Shell: N/A Combo: 12” Bad Cat Proprietary Celestion Speaker

 

Impedance

: Selectable 4, 8, 16 ohms

Power Tubes: 

15 Watt

 - 2 EL84, 

30 Watt

 - 2 EL34, 

50 Watt

 - 2 EL34

Pre-Amp Channel 1: 12AX7 

Pre-Amp Channel 2: 12AX7

Rectifier Tube: 

15 Watt

 - GZ34/SS, 

30 Watt

 - GZ34/SS, 

50 Watt 

- Solid State

30-watt

2-el34

Cathode Biased

2-Channel Foot switChaBle

halF Power switCh

50-watt

2-el34

Grid Biased

2-Channel Foot switChaBle

halF Power switCh

modeled & imProved From 

the lynx

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